{'C'} 0.95717 0.39223 0.25 To my eyes anyways, the above data are all for the same test for the first three and then the second set of three; but the fourth column data values are unique other than by happenstance it appears that the last @250ms is same in second and fourth columns as the first @500ms. If I remove duplicates in Excel, 4 rows of data get removed. indicating which test-names are flagged. It worked perfectly and removed all the duplicate rows. Table.RemoveRows(table as table, offset as number, optional count as nullable number) as table About. {'B'} 0.96489 0.67874 0.5 Mathematica cannot find square roots of some matrices? # Delete duplicate rows based on specific columns df2 = df.drop_duplicates(subset=["Courses", "Fee"], keep=False) print(df2) Yields the same output as above. Or you could create a very similar table with dummy-data and make sure that it has the same problem as your table. CGAC2022 Day 10: Help Santa sort presents! so I want the first row of data for each month. I assume this is the right structure. %use default tolerance. In this post I explain advanced manipulation of locals via macro lists, which allow us to get the number of elements in a local, handle duplicate elements, sort (and shuffle) elements and perform other logical operations. remove duplicates missing in excel 365 Hereditary Meaning in Hindi Adjective 1. "Bonjour" means both good morning and hello. I want only one data row for same month. . rowNum1 = arrayfun(@(i) {find(testID==i & T.T3==0.25, 1)}, unique(testID)); rowNum2 = arrayfun(@(i) {find(testID==i & T.T3==0.50, 1)}, unique(testID)); First, please see my previous comment which I may have added while you were typing your response (I updated my solution). {'B'} 0.54688 0.84913 0.25 I tried removing ", 2" after <0.05 in the first line but same response. ans = 1 2 3 4 5 6 7 8 The order doesn't matter. {'A'} 0.81472 0.14189 0 I thought this might be due to the dimensions being different in that the previous code expected two matches/duplicates but this code is open to a variable number of matches? What am I doing wrong? To do so follow the instructions below. {'B'} 0.2785 0.035712 0.33 . Start with A = magic (4) A = 16 2 3 13 5 11 10 8 9 7 6 12 4 14 15 1 Then, delete the second column of A using A (:, 2) = [] This changes matrix A to A = 16 3 13 5 10 8 9 6 12 4 15 1 https://uk.mathworks.com/matlabcentral/answers/494161-removing-rows-duplicates-based-on-a-condition, https://uk.mathworks.com/matlabcentral/answers/494161-removing-rows-duplicates-based-on-a-condition#comment_773145, https://uk.mathworks.com/matlabcentral/answers/494161-removing-rows-duplicates-based-on-a-condition#comment_773148, https://uk.mathworks.com/matlabcentral/answers/494161-removing-rows-duplicates-based-on-a-condition#answer_404121, https://uk.mathworks.com/matlabcentral/answers/494161-removing-rows-duplicates-based-on-a-condition#comment_773204. (p. paranapariyaN ) 4. This is done by transferring only the unique rows to the newly created table and deleting the original one (with the remaining duplicate rows). There is a duplicate of all 0.25 and 0.5s. rmRows = rowNums(2, ~isnan(rowNums(2,:))); Thank you. If I remove duplicates in Excel, 4 rows of data get removed. arrays matlab matrix duplicates Sorry my mistake. The mathwork contact button does not support uploads. Remove duplicate rows in table - MATLAB Answers - MATLAB Central Trial software Remove duplicate rows in table Follow 214 views (last 30 days) Show older comments DavidL88 on 20 Jan 2021 0 Commented: DavidL88 on 28 Jan 2021 Accepted Answer: Adam Danz Hi I have a table with four columns and roughly 45,000 rows (example below). Accelerating the pace of engineering and science. rowNum1 = arrayfun(@(i) {find(testID==i & T.T3==0.25, 1)}, unique(testID)); rowNum2 = arrayfun(@(i) {find(testID==i & T.T3==0.50, 1)}, unique(testID)); First, please see my previous comment which I may have added while you were typing your response (I updated my solution). There may be some small differences between the values that matlab does not show by default. Choose a web site to get translated content where available and see local events and The demo removes the first line where column 4 equals 0.25 or 0.50 for each test. So if none of the cells below in col3 for the 'A' test have a value that is <0.05 then remove all rows for 'A'? Unable to complete the action because of changes made to the page. Not the answer you're looking for? You will notice that the first row has automatically been deselected. Then you have to identify which rows of the table have those test names. Given that rowNum1 and 2 extracted these cells they should be equal to .25 and .5 exactly? Tnew ( [18,20,21],:) = []; size (Tnew) ans = 12 103 8 The table contains information on 103 patients now. Second, those trailing 0s are suspicious. You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. MathWorks is the leading developer of mathematical computing software for engineers and scientists. Other MathWorks country Why was USB 1.0 incredibly slow even for its time. Excel spreadsheet I tried removing ", 2" after <0.05 in the first line but same response. Or maybe you meant that they have the same values as the previous version which would only happen if all tests had duplicates for .25 and .50. Should it not be 39, 246, 453, etc? Then you have to identify which rows of the table have those test names. What am I doing wrong? It's expected that they are cell arrays with the same size. Not at all clear what is the result wanted from this dataset, to me, anyways contains the test names which can be strings, character vectors, categoricals, or numeric. Is it possible to hide or delete the new Toolbar in 13.1? Could you attach a mat file containing the table? Help us identify new roles for community members, Proposing a Community-Specific Closure Reason for non-English content, Fastest way to duplicate an array in JavaScript - slice vs. 'for' loop, Remove pandas rows with duplicate indices. MathWorks est le leader mondial des logiciels de calcul mathmatique pour les ingnieurs et les scientifiques. Can I email you the table rather than uploading it here? I'm getting the below message. Start Hunting! _____ _______ ________ ____ I ran that second script (adapted below). Tnew ( [18,20,21],:) = []; size (Tnew) ans = 12 103 8 The table contains information on 103 patients now. elegant: T (T.b <= 5,:) = []; Share Follow answered Nov 15, 2017 at 20:45 I don't see the duplication in the sample dataset? Based on However, it requires you to have sufficient space available in the database to temporarily build the duplicate table. offers. I'm not sure why I got a different result. [1999;1999;1999;2000;2001;2002;2000;2001;2004;2000;2005;2005;2001]. Unable to complete the action because of changes made to the page. MathWorks is the leading developer of mathematical computing software for engineers and scientists. to have the same values in both variables unless the result is an empty array (no matches). You have removed too much. The -local- command is a way of defining macro in Stata. Sometimes when the cells are stored in different formats within the same column in the raw data, they get duplicated. . Deletes all rows from the original table that are also located in the duplicate table. I split this column after the second ms and re-ran your code, using the second new column as the test idenifier, so that the two rows are now identified as the same test. You can create an intermediate table and use it to remove duplicate rows. Then you just sub A2 in for A into dbp's solution. (I'm presuming the 0.25 and 0.5 are confidence limits of the test and not values of the statistic as Adam presumed below). the post title is misleading - you don't want to remove duplicate rows, you want to remove rows with the same contents, irrespective of order, You may receive emails, depending on your. offers. {'A'} 0.90579 0.42176 0.25 By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. ( Hi !) The mathwork contact button does not support uploads. rowNum1 = arrayfun(@(i) {find(testID==i & abs(T.col4-0.25)<0.00001, 2)}, unique(testID)); rowNum2 = arrayfun(@(i) {find(testID==i & abs(T.col4-0.50)<0.00001, 2)}, unique(testID)); % ---> ---> ---> ---> ---> ---> ---> ---> ^^^^^^^^^^^^^^^^^^^^^^^. Check out my Recommended Power Supplies for RTX 3090 Ti GPUs below. Removing duplicate rows (not "unique") - MATLAB Answers - MATLAB Central Removing duplicate rows (not "unique") 153 views (last 30 days) Show older comments Michael Siebold on 4 May 2016 0 Link Translate Answered: GeeTwo on 16 Aug 2022 Accepted Answer: Roger Stafford rowNum3 finds those Tests with a value < 0.05 in T2. The question is whether their floating point representation is causing a problem with the equality tests. The first column is the name of statistical test (of which there are several hundred different tests). your location, we recommend that you select: . The matrix is an example, but generally if two rows have the same value in the first column I have to remove the second one. 'Perm t-test equal [250ms,500ms 92, 108]: Avg: 11_right FCL', 'Perm t-test equal [500ms,900ms 92, 108]: Avg: 11_right FCL'. The advantage of using this method is faster ingestion since de . Unable to complete the action because of changes made to the page. You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. . It doesn't matter that. {'B'} 0.54688 0.84913 0.25 A = table([1;2;3;3;3;3;4;4;4], [ 0;0;0;0;1;1;1;1;1], [1999;1999;1999;2000;2001;2002;2000;2001;2004]); If ID is the same and within that ID the size = 1 then if there are more than one rows, keep the row that contains the earliest Date for that ID. So in this case the new table would look like this: B = table ( [1;2;3;3;3;4], [ 0;0;0;0;1;1], [1999;1999;1999;2000;2001;2000]); B.Properties.VariableNames = {'ID' 'Size' 'Date'}; Thanks! It returns back exactly A. identical. 1. Thanks for your help! {'B'} 0.09754 0.65574 0 The question is whether their floating point representation is causing a problem with the equality tests. Best 750-1000 Watt PSU. Tnew ( [18,20,21],:) = []; size (Tnew) ans = 12 103 8 The table contains information on 103 patients now. When inspecting gg we see that there are still duplicate rows. Unable to complete the action because of changes made to the page. ( Hi ! Once you have clicked on it, a small dialog box will appear. In the Advanced Filter window, check on Filter the List, in-Place to filter the dataset in its current location. It will return a logical column vector indicating which test groups do not contain any col4 values less than 0.05. rowNum3 = arrayfun(@(i) {find(testID==i & TableMain.T2<0.50)}, unique(testID)); rowNums4 = cell2mat(cellfun(@isempty,rowNum3)). Find the treasures in MATLAB Central and discover how the community can help you! {'A'} 0.63236 0.95949 0.5 You can set 'keep=False' in the drop_duplicates() function to remove all the duplicate rows. . Accelerating the pace of engineering and science. I double-checked and confirmed this on one duplicate. 3million rows x 50 columns. Another option is to filter out the duplicate rows in the data during query. Delete Rows by Row Number Delete rows 18, 20, and 21 from the table. {'B'} 0.96489 0.67874 0.5 My original solution removed the first row that contains .25 or .50 in col4 for each test. The solution relies on the Date field being sorted so unique returns the first/lowest dateif possibly not, then sort first. The solution above removes duplicate values (cells) from matrix (and returns a vector), but I need to remove duplicate rows and return a matrix the same matrix without duplicate rows. Given that rowNum1 and 2 extracted these cells they should be equal to .25 and .5 exactly? The arg_max () aggregated function can be used to filter out the duplicate records and return the last record based on the timestamp (or another column). {'C'} 0.48538 0.65548 0.33 your location, we recommend that you select: . Based on > It shouldn't be a floating point as those numbers represent exact time-stamps, They aren't integers so it's not debatable whether they are represented by floating point or not. Thanks. None get removed using unique () Find the treasures in MATLAB Central and discover how the community can help you! {'C'} 0.97059 0.74313 0.25 matlab: duplicate rows removal [duplicate]. Choose a web site to get translated content where available and see local events and in Untitled4>@(i){find(testID==i&TableMain.T2<0.50)} (line 6), below returns a logical vector the same size as. rmRows = rowNums(2, ~isnan(rowNums(2,:))); Thank you. Remove duplicates from table with string, datetime, double 156 views (last 30 days) Show older comments Harry Lindner on 25 Jun 2015 0 Link Translate Commented: Sean de Wolski on 26 Jun 2015 Accepted Answer: Sean de Wolski cat.csv The data is attached, also below. For rowNum1 and 2 the same vales are there (both are listed as 648x1 cell same as before with first script (with 39 and 40, the first set of duplicates, listed there too). I ran that second script (adapted below). Delete Rows by Row Number Delete rows 18, 20, and 21 from the table. {'C'} 0.15761 0.75774 0 Duplicate elements Add and remove elements . sites are not optimized for visits from your location. {'A'} 0.63236 0.95949 0.5 offers. None get removed using unique() Thank you for the help! Reload the page to see its updated state. If ID is the same and within that ID the size = 1 then if there are more than one rows, keep the row that contains the earliest Date for that ID. https://www.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table, https://www.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1275414, https://www.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#answer_602570, https://www.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1275426, https://www.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1275483, https://www.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1275493, https://www.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1275503, https://www.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1275633, https://www.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1275648, https://www.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1275658, https://www.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1276763, https://www.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1276863, https://www.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1276993, https://www.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1280992, https://www.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1281157, https://www.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1281292, https://www.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1281352, https://www.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1292288. I have a table with four columns and roughly 45,000 rows (example below). It will return a logical column vector indicating which test groups do not contain any col4 values less than 0.05. rowNum3 = arrayfun(@(i) {find(testID==i & TableMain.T2<0.50)}, unique(testID)); rowNums4 = cell2mat(cellfun(@isempty,rowNum3)). We do not currently allow content pasted from ChatGPT on Stack Overflow; read our policy here. Please help, as I already spent some hours trying to fix it myself (I suck at programming.) https://fr.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table, https://fr.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1275414, https://fr.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#answer_602570, https://fr.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1275426, https://fr.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1275483, https://fr.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1275493, https://fr.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1275503, https://fr.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1275633, https://fr.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1275648, https://fr.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1275658, https://fr.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1276763, https://fr.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1276863, https://fr.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1276993, https://fr.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1280992, https://fr.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1281157, https://fr.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1281292, https://fr.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1281352, https://fr.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1292288. The first column is the name of statistical test (of which there are several hundred different tests). Is there a way to adapt this code to remove any unique test that does not have a value <0.05 in col3? You could upload it and remove it after I confirm that I received it. rowNum1 = arrayfun(@(i) {find(testID==i & abs(T.col4-0.25)<0.00001, 2)}, unique(testID)); rowNum2 = arrayfun(@(i) {find(testID==i & abs(T.col4-0.50)<0.00001, 2)}, unique(testID)); % ---> ---> ---> ---> ---> ---> ---> ---> ^^^^^^^^^^^^^^^^^^^^^^^. How many transistors at minimum do you need to build a general-purpose computer? },5,1),rand(15,1), rand(15,1), repmat([0;.25;.25;.5;.5],3,1), % For each testtype, identify the first row where col4 is .25 and .50. Example 1. Other MathWorks country Remove duplicate rows from matrix - MATLAB Answers - MATLAB Central Remove duplicate rows from matrix Show older comments MC on 14 May 2017 Vote 1 Link Translate Edited: Stephen23 on 6 Mar 2022 Accepted Answer: Stephen23 Hello I have a 2xN matrix where each column represent the x and y coordinates of a 2D point. To delete duplicate rows on the basis of multiple columns, specify all column names as a list. Not at all clear what is the result wanted from this dataset, to me, anyways contains the test names which can be strings, character vectors, categoricals, or numeric. remove duplicate rows from a matrix - MATLAB Answers - MATLAB Central remove duplicate rows from a matrix 83 views (last 30 days) Show older comments Ananya Malik on 16 Aug 2016 0 Link Commented: Walter Roberson on 14 Aug 2020 Accepted Answer: Thorsten I have a matrix of the form Example: a = [1,2; 3,4; 5,6; 1,2; 7,8] a = 1 2 3 4 5 6 1 2 7 8 %. Can I email you the table rather than uploading it here? (p. vanashanugat ) 2. Now call unique like you did, but use the flag first to grab the first unique: Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. To omit any rows in a table that are duplicated, use the unique function. The 0.25 values for this section are in rows 39 and 40 of the table T. FCL' 0.449377841816944 0.653086728317921 0.242187500000000, FCL' 0.379117217892076 0.705573606598350 0.246093750000000, FCL' 0.411715894798510 0.683829042739315 0.250000000000000, FCL' 0.411715894798510 0.680329917520620 0.250000000000000, FCL' 0.564101287653156 0.573856535866034 0.253906250000000, FCL' 0.794131830628734 0.429142714321420 0.257812500000000, This is the same section after running the code. Other MathWorks country How large do you expect your real data to be? Dropbox), send the link, and then remove it from the cloud service. {'B'} 0.95751 0.93399 0.5 {'A'} 0.91338 0.79221 0.5 I copy a sample of the table below before running this code. The duplicate rows remained after running it this time. remove duplicate rows from a matrix - MATLAB Answers - MATLAB Central remove duplicate rows from a matrix 95 views (last 30 days) Show older comments Ananya Malik on 16 Aug 2016 0 Link Translate Commented: Walter Roberson on 14 Aug 2020 Accepted Answer: Thorsten I have a matrix of the form I copy a sample of the table below before running this code. Central limit theorem replacing radical n with n. Can we keep alcoholic beverages indefinitely? Bonsoir (Good evening) Coucou! I assume this is the right structure. If I remove duplicates in Excel, 4 rows of data get removed. The 0.25 values for this section are in rows 39 and 40 of the table T. FCL' 0.449377841816944 0.653086728317921 0.242187500000000, FCL' 0.379117217892076 0.705573606598350 0.246093750000000, FCL' 0.411715894798510 0.683829042739315 0.250000000000000, FCL' 0.411715894798510 0.680329917520620 0.250000000000000, FCL' 0.564101287653156 0.573856535866034 0.253906250000000, FCL' 0.794131830628734 0.429142714321420 0.257812500000000, This is the same section after running the code. count() is similar Message-ID: 1521058742 Example 1 - Remove Duplicate Rows in R Data Frame In this example, we will create a data frame . sites are not optimized for visits from your location. Find the treasures in MATLAB Central and discover how the community can help you! Or you could create a very similar table with dummy-data and make sure that it has the same problem as your table. and nothings seems to work. Tnew = unique (Tnew); size (Tnew) ans = 12 106 8 unique deleted two duplicate rows. Now the solution only removes the rows if the .25 or .50 is a duplicate within each test. Once you have successfully selected the table, you will need to click on the Data tab on the top of the screen and then select "Remove Duplicates" in the Data Tools drop-down box as shown below. Drops the duplicate table. The rubber protection cover does not pass through the hole in the rim. Can anyone advise how I delete the first of these rows (the first one of the .25 and the first one of the 0.5 rows) for every statistical test? A=unique (A,'rows'); toc Will yield: Theme Copy A = 1 1 0 1 1 1 Therefore, A still contains one instance of each row that was duplicate. Thanks. Usage Tnew = unique (Tnew); size (Tnew) ans = 12 106 8 unique deleted two duplicate rows. So in this case the new table would look like this: B = table([1;2;3;3;3;4], [ 0;0;0;0;1;1], [1999;1999;1999;2000;2001;2000]); I can't come up with anything other than a solution involving a nested loop, which will have horrible performance on larger sets of data. Reload the page to see its updated state. If you look at the first example you'll see that in the first column of the duplicate rows the names are slight different (where the ms times are). It can be done using unique (), length (), setdiff (), and numel () functions that are illustrated below: Using Unique () Unique (A) function is used to return the same data as in the specified array A without any repetitions. I have a table with a number of columns and would like to delete some rows based on some conditions. Logic works more simply without having to not subset that grouping (the mess about the complicated indexing expression for. there are 2 rows for same data. {'B'} 0.95751 0.93399 0.5 What matters is if those values equal 0.25 or 0.50. which would also explain the trailing 0s. Second, those trailing 0s are suspicious. The tests do not have to be in order. {'B'} 0.09754 0.65574 0 1 You can use logical indexing: a= [1; 2 ; 3]; b= [ 4; 5; 6 ]; T=table (a,b); rowidx = (T.b <= 5); T = T (~rowidx, :); Which returns: T = 12 table a b _ _ 3 6 Share Follow answered Nov 15, 2017 at 14:46 sco1 12.1k 5 28 46 Add a comment 1 Fast, simple. 7. [testID, testNames] = findgroups(T.Test); rowNum1 = arrayfun(@(i) {find(testID==i & T.col4==0.25, 2)}, unique(testID)); rowNum2 = arrayfun(@(i) {find(testID==i & T.col4==0.50, 2)}, unique(testID)); rowNums = cell2mat(cellfun(@(c){padarray(c,[2-numel(c),0],NaN. Something can be done or not a fit? > For rowNum1 and 2 the same vales are there. Accelerating the pace of engineering and science. For rowNum1 and 2 the same vales are there (both are listed as 648x1 cell same as before with first script (with 39 and 40, the first set of duplicates, listed there too). You could upload it and remove it after I confirm that I received it. sites are not optimized for visits from your location. Or maybe you meant that they have the same values as the previous version which would only happen if all tests had duplicates for .25 and .50. Based on {'C'} 0.80028 0.17119 0.5. Could you attach a mat file containing the table? Working directly with the factory or a Certified Fabricator, SeaDek Certified Installers are factory. Please help, as I already spent some hours trying to fix it myself (I suck at programming) and nothings seems to work. (I'm presuming the 0.25 and 0.5 are confidence limits of the test and not values of the statistic as Adam presumed below). This the exact code I ran on my table T. T3 is the last column and T4 is the first column. Sign in to comment. In, FCL' 0.379117217892076 0.705573606598350 0.246093750000000. The Matlab expression B=all (A) is translated into Scilab by B=and (A): If A is a matrix, all (A) is equivalent to all (A,1) in Matlab whereas in Scilab and (A) is a logical AND of all elements of A. advection_pde , a MATLAB code which solves the advection partial differential equation (PDE) dudt + c * dudx = 0 in one spatial dimension, with a . Refer to the duplicate, but operate on the transpose. {'C'} 0.48538 0.65548 0.33 indicating which test-names are flagged. I thought this might be due to the dimensions being different in that the previous code expected two matches/duplicates but this code is open to a variable number of matches? rowNum3 = arrayfun(@(i) {find(testID==i & T.col4<0.50)}, unique(testID)); rmIdx = ismember(T.Test, testNames(idx)); You may receive emails, depending on your. Should teachers encourage good students to help weaker ones? Other MathWorks country {'C'} 0.80028 0.17119 0.5. {'A'} 0.91338 0.79221 0.5 Delete Rows by Row Number Delete rows 18, 20, and 21 from the table. {'C'} 0.95717 0.39223 0.25 Looking through values listed in rowNum1 and 2, both rows in T that match the values 0.25 and 0.5 seem to be identified and are listed. Tnew = unique (Tnew); size (Tnew) ans = 12 106 8 unique deleted two duplicate rows. A default count of 1 is used if the count parameter isn't provided. 5 Most common ways to say hello in French Bonjour (hello, good morning) Salut! You can specify your own. What matters is if those values equal 0.25 or 0.50. which would also explain the trailing 0s. A = [1 2 3 45; 3 2 1 45; 1 4 5 54; 5 4 1 54]; You have a row that begins with 5, but no output row that begins with 5. Is there a way to adapt this code to remove any unique test that does not have a value <0.05 in col3? Dropbox), send the link, and then remove it from the cloud service. I'm not sure why I got a different result. Are you sure they are duplicates? How to remove duplicate rows and select first from duplicate I have a data in worksheet where PO column contains the same value and WBS element column contains different value. informal) All (Hello, used on the phone) Hello in French : Top-20 words and expressions 1 - Bonjour ! My original solution removed the first row that contains .25 or .50 in col4 for each test. Please help to apply the logic. Moves the rows in the duplicate table back into the original table. The duplicate rows remained after running it this time. to have the same values in both variables unless the result is an empty array (no matches). For example, If floating point representation is causing problems like this, you'll need to modify these two lines of my solution. Next, go to Data in the Sort & Filte r group and click on Advanced. Certified Fabricators digitally pattern boats, create CAD drawings, cut SeaDek PE/EVA material using CNC technology, and install the finished products. sites are not optimized for visits from your location. {'C'} 0.15761 0.75774 0 Using the size or count method with pandas. I've also tried to do it in different ways, for example; [~, III, ~] = unique (M,'first','rows'); %removing double points III = sort (III); pleb = M (III,:); gg=sort (pleb); But they either delete non duplicate data, or delete too few data. {'A'} 0.90579 0.42176 0.25 },5,1),rand(15,1), rand(15,1), repmat([0;.25;.25;.5;.5],3,1), % For each testtype, identify the first row where col4 is .25 and .50. How to delete duplicate rows in SQL Server? There is a duplicate of all 0.25 and 0.5s. Find the treasures in MATLAB Central and discover how the community can help you! What is this fallacy: Perfection is impossible, therefore imperfection should be overlooked. Should it not be 39, 246, 453, etc? You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. This method is simple. Why do we use perturbative series if they don't converge? Can a prospective pilot be negated their certification because of too big/small hands? I'm getting the below message. In this article, I'll go over the things you should consider when choosing a power supply for your computer with an Nvidia GeForce RTX 3090 Ti graphics card. 92.0000 166.0000 71.0000 173.0000 55.0000 235.0000 72.6667 191.3333]; I want to remove the redundant rows from A. I believe Michael wanted all instances of each row that appears multiple times be removed. I figured it out. Connect and share knowledge within a single location that is structured and easy to search. A=[317.0000 282.0000 310.0000 259.0000 257.0000 305.0000 294.6667 282.0000, 317.0000 282.0000 309.0000 372.0000 257.0000 305.0000 294.3333 319.6667, 317.0000 282.0000 257.0000 305.0000 310.0000 259.0000 294.6667 282.0000, 317.0000 282.0000 257.0000 305.0000 309.0000 372.0000 294.3333 319.6667, 92.0000 166.0000 55.0000 235.0000 71.0000 173.0000 72.6667 191.3333. Thanks for your help! (p. maurusi ) 5. Create an intermediate table that has the same structure as the source table and . Learn more about unique remove duplicates string table double . ie if (1,2) is different to (2,1). It doesn't matter that. The effect as you demonstrate is what I'm looking for. {'A'} 0.12699 0.91574 0.25 I sorted rowNum1 and got back this. For every statistical test the values in the 4th column are duplicated (at .25 and 0.5). GeeTwo on 16 Aug 2022 Vote 0 Link Translate %Here's a much cleaner way to do it with 2019a or later! warning, if position in the row is important then you dont want this. To remove duplicate rows using the advanced filter, select the whole dataset. Ready to optimize your JavaScript with Rust? Did the apostolic or early church fathers acknowledge Papal infallibility? rev2022.12.11.43106. Re: Remove PivotTable Duplicate Row Labels. Accepted Answer Find centralized, trusted content and collaborate around the technologies you use most. To my eyes anyways, the above data are all for the same test for the first three and then the second set of three; but the fourth column data values are unique other than by happenstance it appears that the last @250ms is same in second and fourth columns as the first @500ms. To omit any rows in a table that are duplicated, use the unique function. Or you could upload it to a cloud service (e.g. I adapted this to my dataset and it seems to erase any row with 0.25 or 0.5. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Remove the first row from the table. rowNum1 = arrayfun(@(i) {find(testID==i & T.T3==0.25, 2)}, unique(testID)); rowNum2 = arrayfun(@(i) {find(testID==i & T.T3==0.50, 2)}, unique(testID)); It shouldn't be a floating point as those numbers represent exact time-stamps. Remove duplicate rows in table - MATLAB Answers - MATLAB Central Remove duplicate rows in table 211 views (last 30 days) Show older comments DavidL88 on 20 Jan 2021 0 Link Translate Commented: DavidL88 on 28 Jan 2021 Accepted Answer: Adam Danz Hi I have a table with four columns and roughly 45,000 rows (example below). {'C'} 0.97059 0.74313 0.25 It is a prety big data set. Removes count of rows from the beginning of the table, starting at the offset specified. You may receive emails, depending on your. The data is attached, also below. The effect as you demonstrate is what I'm looking for. Choose a web site to get translated content where available and see local events and It's expected that they are cell arrays with the same size. You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. It worked perfectly and removed all the duplicate rows. It didn't make any change to the table. in Untitled4>@(i){find(testID==i&TableMain.T2<0.50)} (line 6), below returns a logical vector the same size as. Reload the page to see its updated state. I don't see the duplication in the sample dataset? This the exact code I ran on my table T. T3 is the last column and T4 is the first column. Can anyone help. Seasonic Prime TX-750 Check Price on Amazon Amazon Affiliate Link. To omit any rows in a table that are duplicated, use the unique function. Delete Rows by Row Number Delete rows 18, 20, and 21 from the table. The tests do not have to be in order. How could my characters be tricked into thinking they are on Mars? _____ _______ ________ ____ Tnew = unique (Tnew); size (Tnew) ans = 12 106 8 unique deleted two duplicate rows. Can anyone advise how I delete the first of these rows (the first one of the .25 and the first one of the 0.5 rows) for every statistical test? {'B'} 0.2785 0.035712 0.33 Looking through values listed in rowNum1 and 2, both rows in T that match the values 0.25 and 0.5 seem to be identified and are listed. Accelerating the pace of engineering and science. Then click on Unique Records Only. [testID, testNames] = findgroups(T.Test); rowNum1 = arrayfun(@(i) {find(testID==i & T.col4==0.25, 2)}, unique(testID)); rowNum2 = arrayfun(@(i) {find(testID==i & T.col4==0.50, 2)}, unique(testID)); rowNums = cell2mat(cellfun(@(c){padarray(c,[2-numel(c),0],NaN. Remove dublicate rows in long table using matlab Extracting rows from .mat table using for loop in MATLAB fetch in matlab with SELECT using postgreSQL locks table long after completion how to remove only the desired row from the matrix and return the rest rows of a matrix using matlab Can several CRTs be wired in parallel to one oscilloscope circuit? Test col2 col3 col4 If you look at the first example you'll see that in the first column of the duplicate rows the names are slight different (where the ms times are). Or you could upload it to a cloud service (e.g. tmp3 = []; for i=1:numel (tmp2 (:,1))-1 if tmp2 (i,1) == tmp3 tmp2 (i,:) = []; end tmp3 = tmp2 (i,1); end But all of the methods seem to omit the first row to remove. I adapted this to my dataset and it seems to erase any row with 0.25 or 0.5. I am trying to remove a column from a matlab table (not a matrix) with the next codes: %remove one for the last column TJNew= removevars (TJClean,5); TJNew= removevars (TJClean,'Prob2'); TJNew= removevars (TJClean,TJClean.Prob2); but I am getting this error: Undefined function or variable 'removevars'. Sorry my mistake. I sorted rowNum1 and got back this. B=[A(A.Size==0,:);A([ia+find(A.Size==0,1, I'm guessing the selection on Size==1 is only artificial given no duplicates by inspection. SeaDek Certified Fabricators are factory trained to specialize in the entire SeaDek process. I have a table with four columns and roughly 45,000 rows (example below). I double-checked and confirmed this on one duplicate. If you go to France, the single most common word for hello is " Bonjour ". rowNum1 = arrayfun(@(i) {find(testID==i & T.T3==0.25, 2)}, unique(testID)); rowNum2 = arrayfun(@(i) {find(testID==i & T.T3==0.50, 2)}, unique(testID)); It shouldn't be a floating point as those numbers represent exact time-stamps. rowNum3 finds those Tests with a value < 0.05 in T2. > It shouldn't be a floating point as those numbers represent exact time-stamps, They aren't integers so it's not debatable whether they are represented by floating point or not. - rayryeng May 7, 2017 at 19:40 Add a comment 1 Answer Sorted by: 1 You can use any for this purpose as follows: A = A (any (A,2),:); % any (A,2) gives the logical indices of the rows whose at least one element is non-zero Share Improve this answer Follow edited May 7, 2017 at 14:16 (p. paitaRak ) 3. Examples of frauds discovered because someone tried to mimic a random sequence, Counterexamples to differentiation under integral sign, revisited. For every statistical test the values in the 4th column are duplicated (at .25 and 0.5). your location, we recommend that you select: . I figured it out. This is part from MATLAB documentation You can delete rows and columns from a matrix by assigning the empty array [] to those rows or columns. {'A'} 0.81472 0.14189 0 Does not work. I split this column after the second ms and re-ran your code, using the second new column as the test idenifier, so that the two rows are now identified as the same test. Remove duplicates from table with string, datetime, double 174 views (last 30 days) Show older comments Harry Lindner on 25 Jun 2015 Commented: Sean de Wolski on 26 Jun 2015 Accepted Answer: Sean de Wolski cat.csv The data is attached, also below. TIA. rowNum3 = arrayfun(@(i) {find(testID==i & T.col4<0.50)}, unique(testID)); rmIdx = ismember(T.Test, testNames(idx)); You may receive emails, depending on your. So if none of the cells below in col3 for the 'A' test have a value that is <0.05 then remove all rows for 'A'? {'A'} 0.12699 0.91574 0.25 Also, if there is space/s at the beginning or at the end of these fields, when you filter them out they look the same, however, when you plot a Pivot Table, they appear as separate . Choose a web site to get translated content where available and see local events and 'Perm t-test equal [250ms,500ms 92, 108]: Avg: 11_right FCL', 'Perm t-test equal [500ms,900ms 92, 108]: Avg: 11_right FCL'. For example, If floating point representation is causing problems like this, you'll need to modify these two lines of my solution. The demo removes the first line where column 4 equals 0.25 or 0.50 for each test. The above also assumes that A.Size is sorted, if this is not the case in your data you should first sort the Size and then the Date where Size=1 as follows: A = table([1;2;3;3;3;3;4;4;4;5;5;5;5], [ 0;0;0;0;1;1;1;1;1;0;0;1;1]. I had a question and got an answer yesterday about removing doubling rows in a matrix, and I can't figure out why it omits certain rows in a matrix. To omit any rows in a table that are duplicated, use the unique function. Test col2 col3 col4 rowNums4 identifies those that came back negative and I can use this vector to remove those rows. Now the solution only removes the rows if the .25 or .50 is a duplicate within each test. Based on offers. Solution #2: Handle duplicate rows during query. Select your List-Range values. https://www.mathworks.com/matlabcentral/answers/299722-remove-duplicate-rows-from-a-matrix, https://www.mathworks.com/matlabcentral/answers/299722-remove-duplicate-rows-from-a-matrix#answer_231880, https://www.mathworks.com/matlabcentral/answers/299722-remove-duplicate-rows-from-a-matrix#comment_385554, https://www.mathworks.com/matlabcentral/answers/299722-remove-duplicate-rows-from-a-matrix#comment_972384, https://www.mathworks.com/matlabcentral/answers/299722-remove-duplicate-rows-from-a-matrix#answer_231869, https://www.mathworks.com/matlabcentral/answers/299722-remove-duplicate-rows-from-a-matrix#comment_385526, https://www.mathworks.com/matlabcentral/answers/299722-remove-duplicate-rows-from-a-matrix#comment_385530, https://www.mathworks.com/matlabcentral/answers/299722-remove-duplicate-rows-from-a-matrix#comment_385551, https://www.mathworks.com/matlabcentral/answers/299722-remove-duplicate-rows-from-a-matrix#comment_385555, https://www.mathworks.com/matlabcentral/answers/299722-remove-duplicate-rows-from-a-matrix#comment_385634, https://www.mathworks.com/matlabcentral/answers/299722-remove-duplicate-rows-from-a-matrix#comment_972399, https://www.mathworks.com/matlabcentral/answers/299722-remove-duplicate-rows-from-a-matrix#comment_973188. > For rowNum1 and 2 the same vales are there. Reload the page to see its updated state. rowNums4 identifies those that came back negative and I can use this vector to remove those rows. Are you sure they are duplicates? In, FCL' 0.379117217892076 0.705573606598350 0.246093750000000. Tnew ( [18,20,21],:) = []; size (Tnew) ans = 12 103 8 The table contains information on 103 patients now. your location, we recommend that you select: . In this article, we will discuss how to find duplicate values and their indices within an array in MATLAB. Find the treasures in MATLAB Central and discover how the community can help you! It didn't make any change to the table. MathWorks is the leading developer of mathematical computing software for engineers and scientists. 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