By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. pathrisk = {1 [] 5 3 [] [] 9} % example data. . Now for this example how can i do the same process? Can we keep alcoholic beverages indefinitely? Ready to optimize your JavaScript with Rust? I feel the problem is that we are not able to address the sub indexed cells. 1 excel ''' '' 5 G . on each step of the loop. Refer to sets of cells by enclosing indices in smooth Your function. I tried with other sets of data (smaller than 10) and this problem seems to only occur in this instance. It looks like your cell array contains axes handles. The elements of the cell array must all . Also the first function is returning the error "Error: The expression to the left of the equals sign is not a valid target for an assignment." Connect and share knowledge within a single location that is structured and easy to search. ST_Tesselate on PolyhedralSurface is invalid : Polygon 0 is invalid: points don't lie in the same plane (and Is_Planar() only applies to polygons). ). your location, we recommend that you select: . Creating new matrix from cell with some empty cells disregarding empty cells; Converting a matrix loop into an equivalent function; Converting an image (3D array) into a 2D matrix in a specific order; Converting matrix data representation into meshgrid; Converting a scipy.sparse matrix into an equivalent MATLAB sparse matrix By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Why was USB 1.0 incredibly slow even for its time? your location, we recommend that you select: . Thanks for contributing an answer to Stack Overflow! Count how often multiple text or number values occur by using the SUM and IF functions together. What can be done to rectify this error. Asking for help, clarification, or responding to other answers. Does illicit payments qualify as transaction costs? Some of the cells are empty cells, while others have values. Due to the removal, cell dimensions are resized. A cell arrayis a data type with indexed data containers called cells, where each cell can contain any type of data. offers. I want to change the empty strings to NaNs using a MATLAB function. Based on Is Kris Kringle from Miracle on 34th Street meant to be the real Santa? A = cell2mat( C ) converts a cell array into an ordinary array. 'mat2cell' function is a very effective command to adjust dimensions of a multidimensional matrix. It is wrong in multiple ways. Zorn's lemma: old friend or historical relic? Any idea why this might be happening? Find the treasures in MATLAB Central and discover how the community can help you! Since there are 11 sets of data, the cell arrays are nx11 and the final matrices are nx11. . disp(c); us The above takes AGES if the cell matrix is large. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. To learn more, see our tips on writing great answers. Hilfe bei der Programmierung, Antworten auf Fragen / Matlab / Cell2mat fr ungleiche Lngen - MATLAB - matlab Ich habe ein einfaches 2D-Zellenarray, das Daten enthlt in Form von: Was ist die einfachste Mglichkeit, cat / cell2mat zu verwenden, wenn jede Spalte ungleich lang sein kann? Connect and share knowledge within a single location that is structured and easy to search. Without being able to see the cell array that you input into cell2mat I can only guess, but my guess would be that you have a column in the cell array with empty cells. 2) your loop didn't work properly for arrays with more than 2 dimension. For some reason, load_data = cell2mat(load_data); instead eliminates one column so the initial cell array is nx11 and the final matrix is nx10 instead. but I'm not sure if it will be general enough for you - will you always have complete rows of empty cells at the bottom of your array? Then, of course, you can reconvert it to a cell array with the following command: a = mat2cell (cleanedA, [1 1], [1 1]) Its not generic, but for the example posted it is the simplest solution I can think of. A = rand (32,32,25*25); B = num2cell (A, [1 2]); B = reshape (B, [25 25]); C = cell2mat (B); size (C) For troubleshooting, you can start by checking if all the cells are indeed 32x32 arrays. I would not have expected that line to ever work. Disconnect vertical tab connector from PCB, PSE Advent Calendar 2022 (Day 11): The other side of Christmas. Basically i wanted to do a basic threshold operation on a cell array of cell array of matrix . matlab matrix cell-array is-empty Share Improve this question Follow edited Apr 21, 2015 at 2:30 niton 8,315 19 31 51 asked Apr 12, 2010 at 17:29 Doresoom 7,378 14 46 61 Add a comment The code worked like a charm. Replace elements of a vector with different probability for 0 to 1, and 1 to 0 in MATLAB; Remove empty cells in 2,n cell-array in MATLAB; replace string with operator and macros in matlab; Problems with empty cell in a large matrix: MATLAB; How to prevent matlab from automatically separating a string with commas to different cells in csv? Any disadvantages of saddle valve for appliance water line? From R2014b, axes handles are objects and the error would appear. Books that explain fundamental chess concepts, Disconnect vertical tab connector from PCB. "how could i do? When I import a lot of data (from more than 10 .csv, in my case I have 11 files), strain_trans_data = cell2mat(strain_trans_data); and strain_ax_data = cell2mat(strain_ax_data); work fine, they just convert the cell arrays to matrices. Answers (1) before concatenation ", Of course, it does. Input cell array, in which all cells contain the same data type. Basically i wanted to do a basic threshold operation on a cell array of cell array of matrix . How do you replace blank cells with 0 in MATLAB? does not support converting a cell array containing objects into a matrix. cell2mat (A); The result Theme Copy Error using cat Dimensions of matrices being concatenated are not consistent. Help us identify new roles for community members, Proposing a Community-Specific Closure Reason for non-English content, Replace empty cells with logical 0's before cell2mat in MATLAB. As mentioned by another community member, "cell2mat" works without errors for the scenario you described. Unable to complete the action because of changes made to the page. cell2mat does not accept objects or nested cells within C. Extended Capabilities Tall Arrays Calculate with arrays that have more rows than fit in memory. I have just written a coarse threshold function and applied to my data using cellfun. Not sure if it was just me or something she sent to the whole team, Radial velocity of host stars and exoplanets. Why would Henry want to close the breach? Oh, good point about the handles being numeric before! . A = cell2mat(C) converts a cell array into an ordinary array . Accelerating the pace of engineering and science. it just has a new error. Some of the cells are empty cells, while others have values. I want to set NAN to these cells. McMa 1554 Some more answer related to the same question So if we convert empty cell to NAN this problem can be solved. Find centralized, trusted content and collaborate around the technologies you use most. Unable to complete the action because of changes made to the page. In addition, you can. it means"Non-scalar arrays of function handles are not allowed; use cell arrays instead. Currently yes, but in general I can no be sure. Choose a web site to get translated content where available and see local events and The best tech tutorials and in-depth reviews; Try a single issue or save on a subscription; Issues delivered straight to your door or device Accelerating the pace of engineering and science. Why doesn't Stockfish announce when it solved a position as a book draw similar to how it announces a forced mate? 9906 Excel matlab CSV excel . If you want to change NaN to 0: Thank u Guillaume. but I'm not sure if it will be general enough for you - will you always have complete rows of empty cells at the bottom of your array? For example, if the cell array has 10 cells but 2 cells are empty, then when this cell array is passed into CELL2MAT, the output matrix will only have 8 elements. Solution 3. Based on cell2mat does not accept objects or nested cells within C. Extended Capabilities Tall Arrays Calculate with arrays that have more rows than fit in memory. sites are not optimized for visits from your location. (Matlab), Creating new matrix from cell with some empty cells disregarding empty cells, Remove empty cells in 2,n cell-array in MATLAB, If he had met some scary fish, he would immediately return to the surface. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Unable to complete the action because of changes made to the page. Cell2mat for cell arrays with numeric strings of different size in Matlab How can Iconvert Matlab code into python :- For UT (Universal Time) to LST (Local Sidereal Time) time conversion with incrementing date time Matlab symbolic function conversion without dot for matrix operation cell2mat conversion in MATLAB (For ismember) Find centralized, trusted content and collaborate around the technologies you use most. Direct link to this answer. offers. Put in a line of code that asks it to celldisp(ax_cell) and show us the results. The error is diagnosed by Simulink.The code attach to the modules.CELL2MAT is in "IEEE80211a_graphics.m" If you need more information I can send you all the files to you personally. We can use any type of input to use this function such as arrays, vector, or multidimensional matrices. A simpler solution very specific to your problem is to convert the cell directly into a matrix: cleanedA = cell2mat(a); It converts to a normal matrix, and while doing this it removes the empty cells. However all code example that I found collapse the matrix to a vector, which is not what I want. https://www.mathworks.com/matlabcentral/answers/98175-can-i-convert-empty-strings-to-nans-automatically-in-a-cell-array, https://www.mathworks.com/matlabcentral/answers/98175-can-i-convert-empty-strings-to-nans-automatically-in-a-cell-array#answer_107525. Since there are 11 sets of data, the cell arrays are nx11 and the final matrices are nx11. Based on You've coded your function to make it so. I used the cellfun to apply the function to a cell. Try this. I want to remove all empty cells at the bottom of a matlab cell array. cell2mat accepts numeric, logical, or character data within cells of C, or structures with the same field names and data types. I am able to do it in the first level based on previous discussion in the forum. How can I use cell2mat with empty cells and filled cells. Then, of course, you can reconvert it to a cell array with the following command: Its not generic, but for the example posted it is the simplest solution I can think of. You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. offers. If the absolute values in the cells are less than a threshold value say 5, i want to assign a zero to it. you can use the @isempty function for cellfun () together with logical operators like this: EmptyCells=cellfun (@isempty,elem); %Detect empty cells elem (EmptyCells)= []; %Remove empty cells conn=conn (~EmptyCells); %Remove elements corresponding the empty cells in elem Hope that works! This is not expected to fix the problem: this is expected to display output that you will copy and paste here and that will help me diagnose the problem. It is not surprising that it does not work in current releases. cell2mat accepts numeric, logical, or character data within cells of C, or structures with the same field names and data types. AND the error happens just when i open a figure file.if i don't open it the error won't happen. You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. Is it correct to say "The glue on the back of the sticker is dying down so I can not stick the sticker to the wall"? Theme Copy >> ses1_results (~cellfun (@ (v)isequal (v,0),ses1_results)) ans = 51 cell array { [ 1.1920]} { [ 0.5678]} { [ 1]} When would I give a checkpoint to my D&D party that they can return to if they die? for eg: % 15 cell array -- [] [] [13 double] [] [15 double]. QGIS Atlas print composer - Several raster in the same layout. Please also show the code you are currently using to do the threshold testing & 0 assigning. Prior to R2014b axes handles used to be plain numbers so indeed you could convert a cell array of axes handles to a matrix. I also don't understand the purpose of the. Mathematica cannot find square roots of some matrices? Other MathWorks country But the code is not working for cell with empty cells in at sub levels, for example. Ready to optimize your JavaScript with Rust? https://www.mathworks.com/matlabcentral/answers/506916-cell2mat-does-not-support-cell-arrays-containing-cell-arrays-or-objects, https://www.mathworks.com/matlabcentral/answers/506916-cell2mat-does-not-support-cell-arrays-containing-cell-arrays-or-objects#comment_800700, https://www.mathworks.com/matlabcentral/answers/506916-cell2mat-does-not-support-cell-arrays-containing-cell-arrays-or-objects#comment_800704, https://www.mathworks.com/matlabcentral/answers/506916-cell2mat-does-not-support-cell-arrays-containing-cell-arrays-or-objects#comment_800895, https://www.mathworks.com/matlabcentral/answers/506916-cell2mat-does-not-support-cell-arrays-containing-cell-arrays-or-objects#comment_801000, https://www.mathworks.com/matlabcentral/answers/506916-cell2mat-does-not-support-cell-arrays-containing-cell-arrays-or-objects#comment_801001, https://www.mathworks.com/matlabcentral/answers/506916-cell2mat-does-not-support-cell-arrays-containing-cell-arrays-or-objects#comment_801012, https://www.mathworks.com/matlabcentral/answers/506916-cell2mat-does-not-support-cell-arrays-containing-cell-arrays-or-objects#comment_801019, https://www.mathworks.com/matlabcentral/answers/506916-cell2mat-does-not-support-cell-arrays-containing-cell-arrays-or-objects#comment_801240, https://www.mathworks.com/matlabcentral/answers/506916-cell2mat-does-not-support-cell-arrays-containing-cell-arrays-or-objects#comment_801321, https://www.mathworks.com/matlabcentral/answers/506916-cell2mat-does-not-support-cell-arrays-containing-cell-arrays-or-objects#comment_801322, https://www.mathworks.com/matlabcentral/answers/506916-cell2mat-does-not-support-cell-arrays-containing-cell-arrays-or-objects#comment_806965, https://www.mathworks.com/matlabcentral/answers/506916-cell2mat-does-not-support-cell-arrays-containing-cell-arrays-or-objects#comment_807224, https://www.mathworks.com/matlabcentral/answers/506916-cell2mat-does-not-support-cell-arrays-containing-cell-arrays-or-objects#answer_416990, https://www.mathworks.com/matlabcentral/answers/506916-cell2mat-does-not-support-cell-arrays-containing-cell-arrays-or-objects#comment_801269. I have mentioned a coarse threshold operation, to apply to the cell. Assuming it's not needed, the function could simply be: which works on any size matrices, including empty ones. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Making statements based on opinion; back them up with references or personal experience. A = rand (32,32,25*25); B = num2cell (A, [1 2]); B = reshape (B, [25 25]); C = cell2mat (B); size (C) Given below are the syntax of Matlab Cell: Syntax.Description. All contents of the input cell array must be of the same data type." I had to write a function that converted each element to a string, whether it was numeric, or a NaN. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. But of course, the loop isn't needed at all. Accelerating the pace of engineering and science. MathWorks is the leading developer of mathematical computing software for engineers and scientists. Edit: I tried stepping into the cell2mat function to see what was happening and found the step where the problem happens. From R2014b, axes handles are objects and the error would appear. MathWorks is the leading developer of mathematical computing software for engineers and scientists. That model was designed for MATLAB R13SP1, which was from 2003. That can be as simple as--after the fopen, of course: Theme Copy >> fgetl (fid); % get, throwaway the header row >> while ~feof (fid) % until run out of data d=cell2mat (textscan (fid,'',5,'delimiter',',','collectoutput',1)); d (:,14).',end ans = 0.0079 0.0078 0.0076 0.0070 0.0071 ans = 0.0072 0.0074 0.0075 0.0088 0.0087 ans = Why is there an extra peak in the Lomb-Scargle periodogram? I pass in a cell array to the CELL2MAT function but the output matrix has less elements than the cell array. Preallocating Cell Arrays with the cell Function The cell function allows you to preallocate empty cell arrays of the specified size. rev2022.12.11.43106. then for some reason it changes to a nx10 double. Description c = mat2cell (x,m,n) divides up the two-dimensional matrix x into adjacent submatrices, each contained in a cell of the returned cell array, c. Vectors m and n specify the number of rows and columns, respectively, to be assigned to the submatrices in c. The example shown below divides a 60-by-50 matrix into six smaller matrices. cell2mat does not accept objects or nested cells within C. Extended Capabilities Tall Arrays Calculate with arrays that have more rows than fit in memory. Assuming that each cell contains a single axes handle, or row vectors of axes handles, then: If the cells contain column vectors/of axes handles: If they contain 2D or ND matrix, it will be more complicated. CGAC2022 Day 10: Help Santa sort presents! Does illicit payments qualify as transaction costs? Learn more about cell array , concatenation MATLAB . The CELLFUN command provides this functionality: % Return a boolean array named 'empties' (with same dimensions as cell array, % 'A') with true for each empty element and false otherwise, % Now change all the empty cells in A from empty strings '' to double NaN, You may receive emails, depending on your. but it is not skipping the empty or NAN cell, instead assigns zero to it. https://www.mathworks.com/matlabcentral/answers/325726-how-to-assign-a-nan-to-an-empty-cell-in-a-cell-array-of-cell-array-of-matrix, https://www.mathworks.com/matlabcentral/answers/325726-how-to-assign-a-nan-to-an-empty-cell-in-a-cell-array-of-cell-array-of-matrix#comment_429899, https://www.mathworks.com/matlabcentral/answers/325726-how-to-assign-a-nan-to-an-empty-cell-in-a-cell-array-of-cell-array-of-matrix#comment_430002, https://www.mathworks.com/matlabcentral/answers/325726-how-to-assign-a-nan-to-an-empty-cell-in-a-cell-array-of-cell-array-of-matrix#answer_255354, https://www.mathworks.com/matlabcentral/answers/325726-how-to-assign-a-nan-to-an-empty-cell-in-a-cell-array-of-cell-array-of-matrix#comment_430001, https://www.mathworks.com/matlabcentral/answers/325726-how-to-assign-a-nan-to-an-empty-cell-in-a-cell-array-of-cell-array-of-matrix#comment_430011, https://www.mathworks.com/matlabcentral/answers/325726-how-to-assign-a-nan-to-an-empty-cell-in-a-cell-array-of-cell-array-of-matrix#comment_430012, https://www.mathworks.com/matlabcentral/answers/325726-how-to-assign-a-nan-to-an-empty-cell-in-a-cell-array-of-cell-array-of-matrix#comment_430013, https://www.mathworks.com/matlabcentral/answers/325726-how-to-assign-a-nan-to-an-empty-cell-in-a-cell-array-of-cell-array-of-matrix#comment_430050, https://www.mathworks.com/matlabcentral/answers/325726-how-to-assign-a-nan-to-an-empty-cell-in-a-cell-array-of-cell-array-of-matrix#comment_430055. I tried with other sets of data (smaller than 10) and this problem seems to only occur in this instance. conversion. The code is working for faster than the one i had previously stated. If you want to delete all the rows in your cell array where all cell are empty, you can use the follwing: The reason it didn't work in your formulation is that if you index with an array, the output is reshaped to a vector (since there is no guarantee that entire rows or columns will be removed, and not simply individual elements somewhere). CA = cell (n) The syntax is used to return a cell array CA, of size n-by-n creating matrices with empty value. A simpler solution very specific to your problem is to convert the cell directly into a matrix: It converts to a normal matrix, and while doing this it removes the empty cells. matlab cell[]MATLAB cell - Providence - struct2cell cell2mat iscell 3-28 cellfun Would it be possible, given current technology, ten years, and an infinite amount of money, to construct a 7,000 foot (2200 meter) aircraft carrier? Received a 'behavior reminder' from manager. Why is Singapore currently considered to be a dictatorial regime and a multi-party democracy by different publications? Hello,i can't solve it until now.I think I don't have enough capicity to, cope with it,Could you please help me?All codes are aviliable except only one error I mentioned.All codes are attached.Only I opened. CA = cell (sz1,,szN) The syntax is used to return a cell array of size sz1-by-sz2-by-.-szN creating matrices with empty value where Sz i is the indication for the. 6 The CELLFUN command provides this functionality: Theme Copy % Return a boolean array named 'empties' (with same dimensions as cell array % 'A') with true for each empty element and false otherwise empties = cellfun ('isempty',A); % Now change all the empty cells in A from empty strings '' to double NaN A (empties) = {NaN}; Sign in to comment. We do not currently allow content pasted from ChatGPT on Stack Overflow; read our policy here. To answer your immediate question, you will have to use a loop: c{idx}(cellfun(@isempty, c{idx})) = {nan}; for the outer cell array, you will have to use a named function (in a file) as anonymous functions can't do assignment: Dear Guillaume, Thank you for the quick answer. Input cell array, in which all cells contain the same data type. sites are not optimized for visits from your location. For some reason, load_data = cell2mat (load_data); instead eliminates one column so the initial cell array is nx11 and the final matrix is nx10 instead. Other MathWorks country CSV , . Matlab fwrite binStr = dec2bin (D) returns the binary, or base-2, representation of the decimal integer D. The output argument binStr is a character vector that represents binary digits using the characters 0. binVal = decimalToBinaryVector(decimalNumber) converts a positive decimal number to a binary vector, represented using the minimum. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. It converts the multidimensional matrix into cell-matrix without affecting data or elements of the input matrix. hello guys.Can you understand Chinese?The sentence in blue means that "CELL2MAT does not support cell arrays containing cell arrays or objects".I never see any error like this.I translated it into English by Google Translator.So it may be not accurate.Do anyone experience this error.Could you please tell me how to do?By the way,my MATLAB version is R2019b,the code is earlier.So i think whether the old version and the new version are incompatible.I think the code itself don't have grammatical errors.Thank you for your answer! confusion between a half wave and a centre tapped full wave rectifier. But I am not able to perform this operation. To learn more, see our tips on writing great answers. Add a new light switch in line with another switch? Error in cell2mat (line 87) m = cat (2,m {:}); To use cell2mat, all cells must be the same size and same class Azzi Abdelmalek on 19 Jul 2013 Edited: Azzi Abdelmalek on 19 Jul 2013 Theme Copy A (cellfun ('isempty',A))= {0} %or Theme In the examples that follow, we use the IF and SUM functions together. I followed it.It shows the property of ax_cell. Matlab - How can I transform a set of cell arrays into an array that allows indexing? Did neanderthals need vitamin C from the diet? What properties should my fictional HEAT rounds have to punch through heavy armor and ERA? Reload the page to see its updated state. MATLAB: Collapse code cells in MATLAB's editor, Faster way to initialize arrays via empty matrix multiplication? How do we know the true value of a parameter, in order to check estimator properties? Is it acceptable to post an exam question from memory online? ,It happened an error.Hope your help.Thank you. cleanedA = cell2mat (a); It converts to a normal matrix, and while doing this it removes the empty cells. Counterexamples to differentiation under integral sign, revisited. your location, we recommend that you select: . Not the answer you're looking for? To perform the linear regression and to plot the data, I need to convert the cell arrays to matrices. Prior to R2014b axes handles used to be plain numbers so indeed you could convert a cell array of axes handles to a matrix. Could there be a problem with the data in the cell array? Choose a web site to get translated content where available and see local events and After the operation i can reassign NAN as an empty cell. sites are not optimized for visits from your location. I was also thinking of using reshape, but in the end I used a simple search for the last row with is not empty, because I find the code you posted too complex or the acutal task. I used the following code to recreate your scenario with the same dimensions (similar to the code used by @DGM) . >> c = {{[],[1,2]},{[],[],[2,4,5]},{[],[2,3,4,6,7],[]}}; @Guillaume: I added the missing parenthesis to your answer as well. "it is not skipping the empty or NAN cell, instead assigns zero to it. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Hence why Walter asked you to run the. Find the treasures in MATLAB Central and discover how the community can help you! There is a function that generalizes the removing specific row/columns from a cell, which is called fun_removecellrowcols. In MATLAB, I have a cell array containing nonempty strings, numbers, and empty strings. Choose a web site to get translated content where available and see local events and tf = cellfun('isempty',pathrisk) % true for empty cells. You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. Then, when I pass the cell array through my "string converter", cell2mat complains about the cells not being consistent. C as a 4x4 cell array, A is a 4x3 numeric array. Other MathWorks country Share Follow If the absolute values in the cells are less than a threshold value say 5, i want to assign a zero to it. Do bracers of armor stack with magic armor enhancements and special abilities? Sign in to answer this question. Input cell array, in which all cells contain the same data type. Actually my cell array consists mainly of strings, so cell2mat is not useful for me. As per James' comment it would probably be more useful to fix your thresholding code so it works on empty cells as well. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. I have a 33845x16 matrix of all numbers (except for some blank cells) and finding the empty cells takes 500 seconds (! Asking for help, clarification, or responding to other answers. The simple way to work around this problem is to do: Which would also fix two other problems with the loop: 1) your loop grew the. We do not currently allow content pasted from ChatGPT on Stack Overflow; read our policy here. Any disadvantages of saddle valve for appliance water line? For example, if the cell array has 10 cells but 2 cells are empty, then when this cell array is passed into CELL2MAT, the output matrix will only have 8 elements. I would like to concatenate all the elements so that I have a single 49x55611. cell2mat eliminating a column from cell array when performing conversion. To do row-wise summation you need to specify the second input to sum (). . Find the treasures in MATLAB Central and discover how the community can help you! Is it appropriate to ignore emails from a student asking obvious questions? . How can I index a MATLAB array returned by a function without first assigning it to a local variable? I presume this is because I have empty fields (in the . Indeed cell2mat does not support converting a cell array containing objects into a matrix. Making statements based on opinion; back them up with references or personal experience. cell2mat (MATLAB Functions) Convert cell array of matrices into single matrix Syntax m = cell2mat (c) Description m = cell2mat (c) converts a multidimensional cell array, c, with contents of the same data type into a single matrix, m. The contents of c must be able to concatenate into a hyperrectangle. The problem is that the empty cells are also set to zero, which i do not want. Cell arrays commonly contain either lists of text, combinations of text and numbers, or numeric arrays of different sizes. Help us identify new roles for community members, Proposing a Community-Specific Closure Reason for non-English content, Conversion from 3D cell array to a set of 2D matrices, loop in each cell array element in matlab, accessing nth column of a cell array in matlab. You may receive emails, depending on your. Reload the page to see its updated state. In the image below m is a nx11 cell. You may receive emails, depending on your. Since the cell array contains scalar axes handles, any of the above would work. Without knowing the exact details of what is in your cell array (shape and size) it's not easy to tell you how to solve the problem. I used the following code to recreate your scenario with the same dimensions (similar to the code used by @DGM) . Reload the page to see its updated state. cell2mat with different data types and empty cells cell2mat with different data types and empty cells 1121 views Jerry Martinez Jan 17, 2013, 4:12:07 PM to I was reading an old post and. How do I detect empty cells in a cell array? rev2022.12.11.43106. one of the solutions c={ 1 2 [] [] 3 4 c(ix)={nan}; % -or- any other marker. cell2mat accepts numeric, logical, or character data within cells of C, or structures with the same field names and data types. I pass in a cell array to the CELL2MAT function but the output matrix has less elements than the cell array. Why does the USA not have a constitutional court? How do you turn a cell array into a matrix in Matlab? c={{[] [1 2]} { [] [] [2 4 5]} {[] [2 3 4 6 7] []}}, When i follow the previous step I am getting the error "Function 'subsindex' is not defined for values of class 'cell'.". There is a function that generalizes the removing specific row/columns from a cell, which is called fun_removecellrowcols. It looks like your cell array contains axes handles. for n=1:length (mycellarray) if isempty (mycellarray {n}) mycellarray {n}=0; end end mylogicalarray=logical (cell2mat (mycellarray)); which works, but uses loops. res=cell2mat (ses1_results); res (res==0)= []; returns Theme Copy res = 1.1920 0.5678 1.0000 NaN 1.0000 >> Or, of course, following the comment; you've already got a cell array; just remove the cells that are zero. Not the answer you're looking for? Due to the removal, cell dimensions are resized. MathWorks is the leading developer of mathematical computing software for engineers and scientists. The code imports data from some .csv files which I analyze by performing a linear regression. It also leaves NaN alone. The problem is that the empty cells are also set to zero, which i do not want. Would it be possible, given current technology, ten years, and an infinite amount of money, to construct a 7,000 foot (2200 meter) aircraft carrier? Thanks for contributing an answer to Stack Overflow! Is this an at-all realistic configuration for a DHC-2 Beaver? What is strange is that both strain_trans_data = cell2mat(strain_trans_data); and strain_ax_data = cell2mat(strain_ax_data); work fine, it's only the last conversion that gives a problem. 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