How can I index a MATLAB array returned by a function without first assigning it to a local variable? Count how often multiple text or number values occur by using the SUM and IF functions together. then for some reason it changes to a nx10 double. Answers (1) before concatenation 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. Try this. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Direct link to this answer. Unable to complete the action because of changes made to the page. 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. I want to set NAN to these cells. Find centralized, trusted content and collaborate around the technologies you use most. 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." When would I give a checkpoint to my D&D party that they can return to if they die? To perform the linear regression and to plot the data, I need to convert the cell arrays to matrices. Please also show the code you are currently using to do the threshold testing & 0 assigning. 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) for eg: % 15 cell array -- [] [] [13 double] [] [15 double]. Prior to R2014b axes handles used to be plain numbers so indeed you could convert a cell array of axes handles to a matrix. Making statements based on opinion; back them up with references or personal experience. one of the solutions c={ 1 2 [] [] 3 4 c(ix)={nan}; % -or- any other marker. It is not surprising that it does not work in current releases. McMa 1554 Some more answer related to the same question You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. offers. I want to change the empty strings to NaNs using a MATLAB function. sites are not optimized for visits from your location. The code worked like a charm. The elements of the cell array must all . offers. I have just written a coarse threshold function and applied to my data using cellfun. Unable to complete the action because of changes made to the page. Prior to R2014b axes handles used to be plain numbers so indeed you could convert a cell array of axes handles to a matrix. If you want to change NaN to 0: Thank u Guillaume. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. 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. 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'.". I feel the problem is that we are not able to address the sub indexed cells. Why does the USA not have a constitutional court? 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. your location, we recommend that you select: . In addition, you can. I also don't understand the purpose of the. Now for this example how can i do the same process? A = rand (32,32,25*25); B = num2cell (A, [1 2]); B = reshape (B, [25 25]); C = cell2mat (B); size (C) We can use any type of input to use this function such as arrays, vector, or multidimensional matrices. 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. Input cell array, in which all cells contain the same data type. tf = cellfun('isempty',pathrisk) % true for empty cells. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. 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. It converts the multidimensional matrix into cell-matrix without affecting data or elements of the input matrix. Based on 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 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. Solution 3. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. does not support converting a cell array containing objects into a matrix. I would not have expected that line to ever work. 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. You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. pathrisk = {1 [] 5 3 [] [] 9} % example data. Matlab - How can I transform a set of cell arrays into an array that allows indexing? Given below are the syntax of Matlab Cell: Syntax.Description. AND the error happens just when i open a figure file.if i don't open it the error won't happen. I tried with other sets of data (smaller than 10) and this problem seems to only occur in this instance. 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? Your function. offers. Input cell array, in which all cells contain the same data type. Since there are 11 sets of data, the cell arrays are nx11 and the final matrices are nx11. To do row-wise summation you need to specify the second input to sum (). There is a function that generalizes the removing specific row/columns from a cell, which is called fun_removecellrowcols. 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. cell2mat accepts numeric, logical, or character data within cells of C, or structures with the same field names and data types. cell2mat accepts numeric, logical, or character data within cells of C, or structures with the same field names and data types. Not sure if it was just me or something she sent to the whole team, Radial velocity of host stars and exoplanets. A cell arrayis a data type with indexed data containers called cells, where each cell can contain any type of data. A = cell2mat(C) converts a cell array into an ordinary array . How do you turn a cell array into a matrix in Matlab? 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. If the absolute values in the cells are less than a threshold value say 5, i want to assign a zero to it. Based on Since there are 11 sets of data, the cell arrays are nx11 and the final matrices are nx11. 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. That model was designed for MATLAB R13SP1, which was from 2003. 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. But the code is not working for cell with empty cells in at sub levels, for example. 'mat2cell' function is a very effective command to adjust dimensions of a multidimensional matrix. Find the treasures in MATLAB Central and discover how the community can help you! MATLAB: Collapse code cells in MATLAB's editor, Faster way to initialize arrays via empty matrix multiplication? Connect and share knowledge within a single location that is structured and easy to search. You've coded your function to make it so. Some of the cells are empty cells, while others have values. 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. Did neanderthals need vitamin C from the diet? 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 So if we convert empty cell to NAN this problem can be solved. Based on Some of the cells are empty cells, while others have values. 2) your loop didn't work properly for arrays with more than 2 dimension. I have mentioned a coarse threshold operation, to apply to the cell. Counterexamples to differentiation under integral sign, revisited. ). Other MathWorks country Reload the page to see its updated state. I pass in a cell array to the CELL2MAT function but the output matrix has less elements than the cell array. What properties should my fictional HEAT rounds have to punch through heavy armor and ERA? confusion between a half wave and a centre tapped full wave rectifier. 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. We do not currently allow content pasted from ChatGPT on Stack Overflow; read our policy here. QGIS Atlas print composer - Several raster in the same layout. ", Of course, it does. Find the treasures in MATLAB Central and discover how the community can help you! CGAC2022 Day 10: Help Santa sort presents! Accelerating the pace of engineering and science. 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 = 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? 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? Preallocating Cell Arrays with the cell Function The cell function allows you to preallocate empty cell arrays of the specified size. Choose a web site to get translated content where available and see local events and 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). Assuming it's not needed, the function could simply be: which works on any size matrices, including empty ones. . 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? The problem is that the empty cells are also set to zero, which i do not want. Reload the page to see its updated state. I have a 33845x16 matrix of all numbers (except for some blank cells) and finding the empty cells takes 500 seconds (! After the operation i can reassign NAN as an empty cell. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. As per James' comment it would probably be more useful to fix your thresholding code so it works on empty cells as well. 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. Actually my cell array consists mainly of strings, so cell2mat is not useful for me. (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. CA = cell (n) The syntax is used to return a cell array CA, of size n-by-n creating matrices with empty value. I want to remove all empty cells at the bottom of a matlab cell array. 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. Choose a web site to get translated content where available and see local events and Asking for help, clarification, or responding to other answers. How do I detect empty cells in a cell array? "how could i do? 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. 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 image below m is a nx11 cell. We do not currently allow content pasted from ChatGPT on Stack Overflow; read our policy here. If the absolute values in the cells are less than a threshold value say 5, i want to assign a zero to it. Mathematica cannot find square roots of some matrices? How do you replace blank cells with 0 in MATLAB? 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. MathWorks is the leading developer of mathematical computing software for engineers and scientists. Disconnect vertical tab connector from PCB, PSE Advent Calendar 2022 (Day 11): The other side of Christmas. I presume this is because I have empty fields (in the . for n=1:length (mycellarray) if isempty (mycellarray {n}) mycellarray {n}=0; end end mylogicalarray=logical (cell2mat (mycellarray)); which works, but uses loops. I used the following code to recreate your scenario with the same dimensions (similar to the code used by @DGM) . Any idea why this might be happening? >> c = {{[],[1,2]},{[],[],[2,4,5]},{[],[2,3,4,6,7],[]}}; @Guillaume: I added the missing parenthesis to your answer as well. Basically i wanted to do a basic threshold operation on a cell array of cell array of matrix . Unable to complete the action because of changes made to the page. cell2mat (A); The result Theme Copy Error using cat Dimensions of matrices being concatenated are not consistent. Choose a web site to get translated content where available and see local events and cell2mat accepts numeric, logical, or character data within cells of C, or structures with the same field names and data types. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. . It also leaves NaN alone. 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. 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. Other MathWorks country Refer to sets of cells by enclosing indices in smooth 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). Not the answer you're looking for? Oh, good point about the handles being numeric before! MathWorks is the leading developer of mathematical computing software for engineers and scientists. 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. 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. sites are not optimized for visits from your location. To learn more, see our tips on writing great answers. Then, when I pass the cell array through my "string converter", cell2mat complains about the cells not being consistent. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. I used the cellfun to apply the function to a cell. Connect and share knowledge within a single location that is structured and easy to search. However all code example that I found collapse the matrix to a vector, which is not what I want. your location, we recommend that you select: . Find centralized, trusted content and collaborate around the technologies you use most. 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. 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. The problem is that the empty cells are also set to zero, which i do not want. Why is there an extra peak in the Lomb-Scargle periodogram? Basically i wanted to do a basic threshold operation on a cell array of cell array of matrix . Put in a line of code that asks it to celldisp(ax_cell) and show us the results. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. "it is not skipping the empty or NAN cell, instead assigns zero to it. Any disadvantages of saddle valve for appliance water line? rev2022.12.11.43106. Why is Singapore currently considered to be a dictatorial regime and a multi-party democracy by different publications? Why doesn't Stockfish announce when it solved a position as a book draw similar to how it announces a forced mate? it just has a new error. Is this an at-all realistic configuration for a DHC-2 Beaver? Not the answer you're looking for? Can we keep alcoholic beverages indefinitely? . but it is not skipping the empty or NAN cell, instead assigns zero to it. As mentioned by another community member, "cell2mat" works without errors for the scenario you described. it means"Non-scalar arrays of function handles are not allowed; use cell arrays instead. 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! From R2014b, axes handles are objects and the error would appear. . Is it acceptable to post an exam question from memory online? I used the following code to recreate your scenario with the same dimensions (similar to the code used by @DGM) . conversion. From R2014b, axes handles are objects and the error would appear. 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! Making statements based on opinion; back them up with references or personal experience. 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. . 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. It is wrong in multiple ways. disp(c); us The above takes AGES if the cell matrix is large. Why would Henry want to close the breach? cell2mat eliminating a column from cell array when performing conversion. Ready to optimize your JavaScript with Rust? Learn more about cell array , concatenation MATLAB . 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"? Thanks for contributing an answer to Stack Overflow! It looks like your cell array contains axes handles. The code is working for faster than the one i had previously stated. 9906 Excel matlab CSV excel . Due to the removal, cell dimensions are resized. You may receive emails, depending on your. But I am not able to perform this operation. How do we know the true value of a parameter, in order to check estimator properties? To learn more, see our tips on writing great answers. 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. 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. Reload the page to see its updated state. Received a 'behavior reminder' from manager. Zorn's lemma: old friend or historical relic? matlab cell[]MATLAB cell - Providence - struct2cell cell2mat iscell 3-28 cellfun 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 would like to concatenate all the elements so that I have a single 49x55611. CSV , . A = cell2mat( C ) converts a cell array into an ordinary array. I am able to do it in the first level based on previous discussion in the forum. I tried with other sets of data (smaller than 10) and this problem seems to only occur in this instance. 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. Accelerating the pace of engineering and science. The code imports data from some .csv files which I analyze by performing a linear regression. ,It happened an error.Hope your help.Thank you. Is it appropriate to ignore emails from a student asking obvious questions? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Hence why Walter asked you to run the. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Indeed cell2mat does not support converting a cell array containing objects into a matrix. rev2022.12.11.43106. Does illicit payments qualify as transaction costs? Does illicit payments qualify as transaction costs? But of course, the loop isn't needed at all. Could there be a problem with the data in the cell array? Currently yes, but in general I can no be sure. Sign in to answer this question. Books that explain fundamental chess concepts, Disconnect vertical tab connector from PCB. Share Follow Why was USB 1.0 incredibly slow even for its time? 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? 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. Theme Copy >> ses1_results (~cellfun (@ (v)isequal (v,0),ses1_results)) ans = 51 cell array { [ 1.1920]} { [ 0.5678]} { [ 1]} cleanedA = cell2mat (a); It converts to a normal matrix, and while doing this it removes the empty cells. You may receive emails, depending on your. on each step of the loop. There is a function that generalizes the removing specific row/columns from a cell, which is called fun_removecellrowcols. In the examples that follow, we use the IF and SUM functions together. 1 excel ''' '' 5 G . Do bracers of armor stack with magic armor enhancements and special abilities? Is Kris Kringle from Miracle on 34th Street meant to be the real Santa? C as a 4x4 cell array, A is a 4x3 numeric array. What can be done to rectify this error. 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. sites are not optimized for visits from your location. Since the cell array contains scalar axes handles, any of the above would work. 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. Input cell array, in which all cells contain the same data type. your location, we recommend that you select: . How can I use cell2mat with empty cells and filled cells. Other MathWorks country I followed it.It shows the property of ax_cell. Due to the removal, cell dimensions are resized. 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. 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. It looks like your cell array contains axes handles. Cell arrays commonly contain either lists of text, combinations of text and numbers, or numeric arrays of different sizes. In MATLAB, I have a cell array containing nonempty strings, numbers, and empty strings. Edit: I tried stepping into the cell2mat function to see what was happening and found the step where the problem happens. Find the treasures in MATLAB Central and discover how the community can help you! Any disadvantages of saddle valve for appliance water line? Thanks for contributing an answer to Stack Overflow! 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. 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. 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. Asking for help, clarification, or responding to other answers. 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? Add a new light switch in line with another switch? Ready to optimize your JavaScript with Rust? 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. 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