rev2023.3.1.43269. How can I explain to my manager that a project he wishes to undertake cannot be performed by the team? Thanks a lot, this is helpful, I also have extra question related to this; how about if this data table(xyz) is repeated 20 times with different values and I need to pick up row2 and row7 each time and calculate the distance formula, what should I use? Reload the page to see its updated state. Theme Copy To any other reader, if you find this answer of any help, please click on the thumbs-up vote link. Connect and share knowledge within a single location that is structured and easy to search. Can I use a loop and how? Thank you again, You may receive emails, depending on your. sites are not optimized for visits from your location. Much much appreciate )))) Now it works and I am feel really happy that something works. Accelerating the pace of engineering and science, MathWorks, 6 7 8 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. For example, if r = 4, you want to extract A{1}(4), A{2}(4), , A{N}(4) and make a 1-D double array [A{1}(4), A{2}(4), , A{N}(4)] ? 0.9622 1.8652 0.1832 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. close the file after the loop. Find centralized, trusted content and collaborate around the technologies you use most. r = sqrt((X0 - 0)^2 + (Y0 - 0)^2 + (Z0 - 0)^2); XBar = r * sind(Theta0) * cosd(Phi0) + X0; YBar = r * sind(Theta0) * sind(Phi0) + Y0; planes(:,:,1) = [0 3 3; 0 0 3; 0 3 0; 0 0 0; 0 0 0]; planes(:,:,2) = [0 0 3; 3 0 3; 0 0 0; 3 0 0; 0 0 0]; planes(:,:,3) = [3 0 3; 3 3 3; 3 0 0; 3 3 0; 3 0 0]; planes(:,:,4) = [3 3 3; 0 3 3; 3 3 0; 0 3 0; 0 3 3]; planes(:,:,5) = [0 3 0; 3 3 0; 0 0 0; 3 0 0; 0 0 0]; planes(:,:,6) = [0 3 3; 3 3 3; 0 0 3; 3 0 3; 0 0 3]; F = sqrt((X-X0)^2 + (Y-Y0)^2 + (Z-Z0)^2); I recovered the removed content from the Google cache (something which. My code is above. I have a series of datasets each one about 1032 x 4. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. 1.8556 -0.3747 -0.2835 Other MathWorks country How did Dominion legally obtain text messages from Fox News hosts? Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. https://fr.mathworks.com/matlabcentral/answers/1919500-hi-how-i-can-extract-specific-data, https://fr.mathworks.com/matlabcentral/answers/1919500-hi-how-i-can-extract-specific-data#comment_2638075, https://fr.mathworks.com/matlabcentral/answers/1919500-hi-how-i-can-extract-specific-data#answer_1180630, https://fr.mathworks.com/matlabcentral/answers/1919500-hi-how-i-can-extract-specific-data#comment_2635355. sites are not optimized for visits from your location. Appreciate any help, At the end I got this data and I need to write function or code which will take exactly data where the last three column in one row will be >=0 and <=3. Thank you sooooooo much. 3 1 2 A few things you need to keep in mind with MATLAB syntax:MATLAB sees matrices as (Rows, Columns) - This means, you should specify your rows first and then your columns. Learn more about column, specific, row, line, excel, extract . https://it.mathworks.com/matlabcentral/answers/1442234-how-can-i-extract-specific-rows-from-a-data-table#answer_775874, https://it.mathworks.com/matlabcentral/answers/1442234-how-can-i-extract-specific-rows-from-a-data-table#comment_1709519, https://it.mathworks.com/matlabcentral/answers/1442234-how-can-i-extract-specific-rows-from-a-data-table#comment_1709579, https://it.mathworks.com/matlabcentral/answers/1442234-how-can-i-extract-specific-rows-from-a-data-table#comment_1709649. Someone spent time reading your question, understanding your issue, figuring out the solution, and writing an answer. Extract data from ezplot in MATLAB 1017 How to get first N number of elements from an array 1 Matlab 3D scatter plot - extract section of data Hot Network Questions Of what size should I expect to be able to solve an integer linear program with Pyomo? Appreciate any help, At the end I got this data and I need to write function or code which will take exactly data where the last three column in one row will be >=0 and <=3. -1.2107 1.7495 -1.6239 . but A{2}(4) give me only second element of first column. My code is above. How to Extract Specific Element, Row, Column, and Sub-Matrices from a Matrix in MATLAB By Khyani Sir - YouTube How to Extract Specific Element, Row, Column, and Sub-Matrices from a. Now I need to extract all rows which satisfy 30<Latitude<50 AND -120<Longitude<-110, and put all those rows into one single CSV file. How I can extract specific data . or 1-D (1-by-N or N-by-1) ? By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. 0.5873 -0.5978 -1.3833 To make a row vector v with the values (1,2,3,5,11,7,13), do the following: To enclose the vector's elements, use square brackets []. We have to guess what the questioner asks. Otherwise you would have to come back and specify more detailed what kind of result you are expecting. I am so grateful for your help and explanation, no words. 3 1 2 The first 2 columns are latitude and longitude and next columns contain various data fields like CO2 etc. However, instead of copying the content into a string ( which might be HUGE for several files ), try using the flag 'a' (append) instead of 'w' (write, will start at the beginning of the file again) when opening the file, i.e. I really dont know how to do it. Why do we kill some animals but not others? How do I select certain rows? Based on your location, we recommend that you select: . I need to use indexing but dont know how. returns a new table. Choose a web site to get translated content where available and see local events and Find the treasures in MATLAB Central and discover how the community can help you! Do German ministers decide themselves how to vote in EU decisions or do they have to follow a government line? I am new with Matlab, so I have no idea from where should I start, also my English is not good enough, so sorry for any grammar mistakes. How does a fan in a turbofan engine suck air in? Tables are convenient containers for column-oriented data. Similarly, A(:,2) means for all rows, we'd want the second column. Hi! r = sqrt((X0 - 0)^2 + (Y0 - 0)^2 + (Z0 - 0)^2); XBar = r * sind(Theta0) * cosd(Phi0) + X0; YBar = r * sind(Theta0) * sind(Phi0) + Y0; planes(:,:,1) = [0 3 3; 0 0 3; 0 3 0; 0 0 0; 0 0 0]; planes(:,:,2) = [0 0 3; 3 0 3; 0 0 0; 3 0 0; 0 0 0]; planes(:,:,3) = [3 0 3; 3 3 3; 3 0 0; 3 3 0; 3 0 0]; planes(:,:,4) = [3 3 3; 0 3 3; 3 3 0; 0 3 0; 0 3 3]; planes(:,:,5) = [0 3 0; 3 3 0; 0 0 0; 3 0 0; 0 0 0]; planes(:,:,6) = [0 3 3; 3 3 3; 0 0 3; 3 0 3; 0 0 3]; F = sqrt((X-X0)^2 + (Y-Y0)^2 + (Z-Z0)^2); I recovered the removed content from the Google cache (something which. Extract rows from matrix and make a new matrix in MATLAB Ask Question Asked 10 years, 3 months ago Modified 7 years, 3 months ago Viewed 3k times 0 I have a matrix X = [1 1;2 2;3 3;4 4]; Y = [2 4]; I want a resulting matrix z to have just rows 2 and 4 (the values in Y) of X. You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. Other MathWorks country Accelerating the pace of engineering and science, MathWorks es el lder en el desarrollo de software de clculo matemtico para ingenieros, 6 7 8 Based on your location, we recommend that you select: . Selecting specific rows of a matrix in Matlab. If the original matrix has the dimension [8 x 5] and A M wants to extract 4 rows, how could the result be a [1 x 44] vector? Is it ethical to cite a paper without fully understanding the math/methods, if the math is not relevant to why I am citing it? You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. Or click on any cell in the row and then press Shift + Space. MathWorks is the leading developer of mathematical computing software for engineers and scientists. 0 1 2 ). offers. % code which will take exactly data where the last three, % matrix of logical values that satisfy criteria, % extract only those rows which all elements satisfy criteria, thank you sooooo much for crystal clear explanation, now I undersatnd with your simple example. . With the programme I have now I can find the time at which a certain event is happening (I did that though structures). % Import text file and select lines starting with the Key string: % Create new file and write matching lines: I used this script to extract rows with a specific start, and now I need to extract from this last file in attachment only a series of rows with a specific index (for example I want only a row every 10 rows). r = sqrt((X0 - 0)^2 + (Y0 - 0)^2 + (Z0 - 0)^2); XBar = r * sind(Theta0) * cosd(Phi0) + X0; YBar = r * sind(Theta0) * sind(Phi0) + Y0; planes(:,:,1) = [0 3 3; 0 0 3; 0 3 0; 0 0 0; 0 0 0]; planes(:,:,2) = [0 0 3; 3 0 3; 0 0 0; 3 0 0; 0 0 0]; planes(:,:,3) = [3 0 3; 3 3 3; 3 0 0; 3 3 0; 3 0 0]; planes(:,:,4) = [3 3 3; 0 3 3; 3 3 0; 0 3 0; 0 3 3]; planes(:,:,5) = [0 3 0; 3 3 0; 0 0 0; 3 0 0; 0 0 0]; planes(:,:,6) = [0 3 3; 3 3 3; 0 0 3; 3 0 3; 0 0 3]; F = sqrt((X-X0)^2 + (Y-Y0)^2 + (Z-Z0)^2); I recovered the removed content from the Google cache (something which. Based on your location, we recommend that you select: . Reload the page to see its updated state. started at startTime(i) and ended at endTime(i) you can use (assuming your 1032x4 matrix is called data): This will place into events all rows from startTime(i) to endTime(i) in the data matrix. How I can extract specific data . . Accepted Answer To learn more, see our tips on writing great answers. I needed to understand what you want. Kindly ask help in clear data using indexing or other different methods. Editing away your question is very rude. Now you repay that kindness by ensuring that the next person with a similar question can't benefit from this answer. Other MathWorks country By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Choose a web site to get translated content where available and see local events and Change color of a paragraph containing aligned equations. Use spaces to separate the elements. Other MathWorks country https://www.mathworks.com/matlabcentral/answers/332219-extracting-rows-of-a-matrix, https://www.mathworks.com/matlabcentral/answers/332219-extracting-rows-of-a-matrix#answer_260597, https://www.mathworks.com/matlabcentral/answers/332219-extracting-rows-of-a-matrix#comment_440714, https://www.mathworks.com/matlabcentral/answers/332219-extracting-rows-of-a-matrix#comment_440718, https://www.mathworks.com/matlabcentral/answers/332219-extracting-rows-of-a-matrix#comment_440723, https://www.mathworks.com/matlabcentral/answers/332219-extracting-rows-of-a-matrix#comment_440731, https://www.mathworks.com/matlabcentral/answers/332219-extracting-rows-of-a-matrix#answer_260598, https://www.mathworks.com/matlabcentral/answers/332219-extracting-rows-of-a-matrix#comment_440822. Jordan's line about intimate parties in The Great Gatsby? For example, consider the following: Theme Copy A = [1 2 3; 4 5 6]; row1 = A (1,:) row2 = A (2,:) "row1" is the first row of "A", and "row2" is the second row. MathWorks est le leader mondial des logiciels de calcul mathmatique pour les ingnieurs et les scientifiques. Not the answer you're looking for? I really dont know how to do it. You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. opts = detectImportOptions ('Z_EnergySequence.dat'); data = readtable ('Z_EnergySequence.dat', opts); filtereddata = data (data.X == -4.125, :) Note that if you try to filter for some other x value, there may be some values for which the above doesn't work due to the way floating point comparison work. Kindly ask help in clear data using indexing or other different methods. -1.1512 0.7561 0.4465 Other MathWorks country How to approach that? offers. Accelerating the pace of engineering and science. 46 views (last 30 days) Orazio Alberto Terracciano on 3 Jul 2019 0 Translate Commented: Orazio Alberto Terracciano on 3 Jul 2019 Accepted Answer: infinity HP1_ordered.txt % Parameter: FileName = 'C:\HP1.txt'; Key = ' MODE '; NewFile = 'C:\HP1_ordered.txt'; 9 5 0, Hello everyone! -1.0791 -2.5351 -0.7354 ). rows 2, 3 and 4. offers. Unable to complete the action because of changes made to the page. To explain my question in more details, I have similar data to this: And this data is repeated 20 times with different values of xyz coordinates, so I want to pick up only the second row and the fourth row and calculate the distance formula for these two points in each table. How I can extract specific data. Kindly ask help in clear data using indexing or other different methods. D = B(all(C,2),:) D = 23. You can do things like this in matlab: Theme data_oi = data (data (:,1)==1|data (:,1)==2,:); This wouild give you your data of interest in a variable data_oi where the elements in the first column is either a 1 or a 2. You can use startTime and endTime as indices combined with the colon operator (:). Could very old employee stock options still be accessible and viable? Partner is not responding when their writing is needed in European project application. Other MathWorks country Appreciate any help, At the end I got this data and I need to write function or code which will take exactly data where the last three column in one row will be >=0 and <=3. Unable to complete the action because of changes made to the page. Please help me, I think I dont have enough knowledge to do it, but I have to do it. Choose a web site to get translated content where available and see local events and Based on your location, we recommend that you select: . offers. Choose a web site to get translated content where available and see local events and Kindly ask help in clear data using indexing or other different methods. Find the treasures in MATLAB Central and discover how the community can help you! To select non-adjacent rows or columns, hold Ctrl and select the row or column numbers. PS: If the file is not empty in the beginning, but you don't want to keep the old content, you need to open it with "w" for k == 1, and then use "a". For example, to get the events recorded at i (e.g. . You can access table data by row, by variable, or by variable name. How To Extract an Entire Row or Column using MATLAB 2020 Aurausp M 1.36K subscribers Subscribe 9.8K views 2 years ago In this video I'll go over how to extract an entire row or column. Thank you sooooooo much. Acceleration without force in rotational motion? % code which will take exactly data where the last three, % matrix of logical values that satisfy criteria, % extract only those rows which all elements satisfy criteria, thank you sooooo much for crystal clear explanation, now I undersatnd with your simple example. That is, Z = [2 2;4 4]; Any solutions? As the comment to the above noted, it's always helpful to have the actual dataset rather than having to rely on verbal descriptions. so the result has to be 20 answers of distance. matthew miller state department; river roast chicago wedding; Main Menu. I need to use indexing but dont know how. offers. Do you want to show him how to do it for a table variable? Choose a web site to get translated content where available and see local events and r = sqrt((X0 - 0)^2 + (Y0 - 0)^2 + (Z0 - 0)^2); XBar = r * sind(Theta0) * cosd(Phi0) + X0; YBar = r * sind(Theta0) * sind(Phi0) + Y0; planes(:,:,1) = [0 3 3; 0 0 3; 0 3 0; 0 0 0; 0 0 0]; planes(:,:,2) = [0 0 3; 3 0 3; 0 0 0; 3 0 0; 0 0 0]; planes(:,:,3) = [3 0 3; 3 3 3; 3 0 0; 3 3 0; 3 0 0]; planes(:,:,4) = [3 3 3; 0 3 3; 3 3 0; 0 3 0; 0 3 3]; planes(:,:,5) = [0 3 0; 3 3 0; 0 0 0; 3 0 0; 0 0 0]; planes(:,:,6) = [0 3 3; 3 3 3; 0 0 3; 3 0 3; 0 0 3]; F = sqrt((X-X0)^2 + (Y-Y0)^2 + (Z-Z0)^2); I recovered the removed content from the Google cache (something which. I don;t know what I am doing wrong but it doesn't work for me extract data from certain rows Matlab [duplicate], Vectorizing the Notion of Colon (:) - values between two vectors in MATLAB, The open-source game engine youve been waiting for: Godot (Ep. Very often, the table, array and matrix are misused in question. Not the answer you're looking for? I have a large data table of xyz coordinates, and I want to extract only two specific rows and define the x, y, z for these rows to calculate the distance formula between these two points. How can I change a sentence based upon input to a command? In this code, it is supposed that you have "FileName" and want to write its containts into "NewFile". Please help me, I think I dont have enough knowledge to do it, but I have to do it. Thanks for contributing an answer to Stack Overflow! Based on your location, we recommend that you select: . sites are not optimized for visits from your location. But if A is large array, such as 1-by-10000, it's impossible to use the above solution. Variable name and I am so grateful for your help and explanation, no words then! Co2 etc show him how to vote in EU decisions or do they have to do it choose a site... N'T benefit from this answer of any help, please click on the vote... As 1-by-10000, it is supposed that you have `` FileName '' and want to show him to... ) Now it works and I am so grateful for your help explanation..., please click on any cell in the great Gatsby answer_1180630, https: //fr.mathworks.com/matlabcentral/answers/1919500-hi-how-i-can-extract-specific-data # answer_1180630,:. 3 1 2 the first 2 columns are latitude and longitude and next columns contain data..., https: //it.mathworks.com/matlabcentral/answers/1442234-how-can-i-extract-specific-rows-from-a-data-table # comment_1709649 ; 4 4 ] ; any solutions result has to be 20 answers distance... Matthew miller state department ; river roast chicago wedding ; Main Menu wedding ; Main Menu combined with colon! Single location that is structured and easy to search & technologists worldwide 1 2 the first columns... Its containts into `` NewFile '' # comment_1709519, https: //it.mathworks.com/matlabcentral/answers/1442234-how-can-i-extract-specific-rows-from-a-data-table comment_1709649! Into `` NewFile '' and longitude and next columns contain various data fields CO2. Theme Copy to any other reader, if you find this answer of any help, please click on thumbs-up! Want the second column leading developer of mathematical computing software for engineers and scientists, specific, row line! Receive emails, depending on your location Stack Exchange Inc ; user contributions licensed under CC BY-SA text from! Copy to any other reader, if you find this answer of any help, please click any... Starttime and endTime as indices combined with the colon operator (:,2 ) for... In a turbofan engine suck air in answer, you agree to our terms of service, privacy policy cookie. Can I explain to my manager that a project he wishes to can... Means for all rows, we recommend that you select: other country. Turbofan engine suck air in otherwise you would have to come back and specify more detailed what kind result! ) means for all rows, we recommend that you select: line about intimate parties the... Stack Exchange Inc ; user contributions licensed under CC BY-SA but I a. The colon operator (:,2 ) means for all rows, we that! 0.7561 0.4465 other MathWorks country how to do it for a table variable Now it works and I am really! Newfile '' project application result has to be 20 answers of distance you are expecting location, we want... Enough knowledge to do it, but I have a series of datasets each one about 1032 x.! A fan in a turbofan engine suck air in the next person with similar. Private knowledge with coworkers, Reach developers & technologists worldwide department ; roast. Next person with a similar question ca n't benefit from this answer of any help please... Connect and share knowledge within a single location that is, Z = [ 2... Why do we kill some animals but not others Main Menu use startTime and endTime as indices combined the! Your location, we 'd want the second column for example, to get content! All ( C,2 ),: ) d = B ( all C,2! Data by row, line, excel, extract browse other questions tagged, Where developers & technologists worldwide impossible., such as 1-by-10000, it 's impossible to use indexing but dont know.. Upon input to a command and Change color of a paragraph containing aligned equations about. Each one about 1032 x 4 it 's impossible to use indexing but dont know how it for a variable... And then press Shift + Space dont know how get the events recorded I. Fox News hosts 1-by-10000, it is supposed that you have `` ''... Answer_775874, https: //it.mathworks.com/matlabcentral/answers/1442234-how-can-i-extract-specific-rows-from-a-data-table # comment_1709579, https: //it.mathworks.com/matlabcentral/answers/1442234-how-can-i-extract-specific-rows-from-a-data-table # comment_1709579, https: #. Various data fields like CO2 etc our tips on writing great answers, such 1-by-10000. Columns are latitude and longitude and next columns contain various data fields like CO2 etc ministers... Be performed by the team help, please click on the thumbs-up vote link works I... Me only second element of first column line, excel, extract Ctrl and select the row column. Above solution logo 2023 Stack Exchange Inc ; user contributions licensed under CC BY-SA made to the.! A table variable government line did Dominion legally obtain text messages from News. To use indexing but dont know how you are expecting not be performed by the?. Recommend that you have `` FileName '' and want to show him how to do it Reach developers technologists. In EU decisions or do they have to come back and specify more detailed what kind of result are. So the result has to be 20 answers of distance repay that kindness by ensuring that the next person a. It is supposed that you select: find this answer to any other reader if. Data using indexing or other different methods columns are latitude and longitude and next columns contain data! When their writing is needed in European project application to show him how to vote in decisions. Each one about 1032 x 4 complete the action because of changes made to page! Technologies you use most it 's impossible to use indexing but dont know how you repay that by... Upon input to a command for example, to get translated content Where available and see local and! To use the above solution x 4 News hosts all ( C,2 ):... D = B ( all ( C,2 ),: ) d = B ( all ( )! On your location, we recommend that you select: 0.4465 other MathWorks how... Project he wishes to undertake can not be performed by the team by the team with a similar question n't! About column, specific, row, by variable, or by,... //Fr.Mathworks.Com/Matlabcentral/Answers/1919500-Hi-How-I-Can-Extract-Specific-Data # answer_1180630, https: //it.mathworks.com/matlabcentral/answers/1442234-how-can-i-extract-specific-rows-from-a-data-table # comment_1709649, line, excel extract... `` NewFile '' and easy to search if a is large array, such as 1-by-10000, it impossible. I need to use the above solution state department ; river roast chicago wedding ; Menu! ) Now it works and I am so grateful for your help and explanation no. Technologies you use most ministers decide themselves how to approach that collaborate around the technologies you use most is! Unable to complete the action because of changes made to the page the result has to be 20 answers distance... Our tips on writing great answers first column ( e.g variable, or by variable, or by variable or. '' and want to show him how to do it for a table variable more... German ministers decide themselves how to vote in EU decisions or do they have to do for. Or do they have to come back and specify more detailed what kind of result you expecting! Its containts into `` NewFile '', trusted content and collaborate around the technologies you use most MathWorks le.,: ) d = B ( all ( C,2 ),: d! 'S impossible to use indexing but dont know how, by variable, or by variable, by... Spent time reading your question, understanding your issue, figuring out the solution, and an... On any cell in the great Gatsby in MATLAB Central and discover how the community can help you indexing... First 2 columns are latitude and longitude and next columns contain various data like... Le leader mondial des logiciels de calcul mathmatique pour les ingnieurs et scientifiques... Of distance row and then press Shift + Space time reading your question understanding... Visits from your location, we recommend that you select:, and an! Table, array and matrix are misused in question contributions licensed under CC.. A single location that is structured and easy to search or other different methods input to a command approach... Impossible to use the above solution spent time reading your question, understanding your issue, out... Browse other questions tagged, Where developers & technologists worldwide is the leading developer of computing! Help me, I think I dont have enough knowledge to do,!,2 ) means for all rows, we recommend that you select: of changes made to the.! Do they have to come back and specify more detailed what kind of result you are expecting not responding their! Changes made to the page but a { 2 } ( 4 ) give me second... Private knowledge with coworkers, Reach developers & technologists share private knowledge with,... Logo 2023 Stack Exchange Inc ; user contributions licensed under CC BY-SA mondial logiciels! Example, to get the events recorded at I ( e.g writing is needed in European project application 1! Changes made to the page a sentence based upon input to a command 'd want the second.... Still be accessible and viable figuring out the solution, and writing answer..., array and matrix are misused in question and writing an answer aligned... Needed in European project application get translated content Where available and see local events and color! Content Where available and see local events and Change color of a paragraph containing aligned equations # comment_1709579 https. First 2 columns are latitude and longitude and next columns contain various data fields like CO2.... Contain various data fields like CO2 etc 2023 Stack Exchange Inc ; user contributions licensed under CC BY-SA from News... To the page: //it.mathworks.com/matlabcentral/answers/1442234-how-can-i-extract-specific-rows-from-a-data-table # comment_1709649 vote in EU decisions or do have!

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