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how to obtain minimal surface of given coordinates?
Minimal in what sense? fill3( [0,50,50,0], [0,0,50,50], [50,10,50,10], 'y' ) ; grid on ;

7 years ago | 0

Answered
[DISCONTINUED] MATLAB Answers Wish-list #4 (and bug reports)
For people who don't check the _"Allow users to contact me securely"_ option in their profile, there could/ *should* be a button...

7 years ago | 2

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How can I sort my data by within a sorting
[xyz_sorted, id] = sortrows( [x(:),y(:),z(:)] ) ;

7 years ago | 0

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How can I read a GeoJSON format file?
See this example: <https://www.mathworks.com/matlabcentral/fileexchange/49813-matlab%C2%AE-for-analyzing-and-visualizing-geos...

7 years ago | 3

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i'm getting vertcat and horizon error in a=[z A z] ..i dont know why?? pls tell me how to resolve
I'm not sure what you want to achieve with this, but I'd say that z=zeros(size(A,1),1); would at least make dimensions m...

7 years ago | 0

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Extract rectangular data from a non-rectangular file with header and convert to a structure of column vectors where field names are the second row of the rectangular data
The problem is that your file has discrepancies. If you look at the first row of data, it is missing an |e| before the |+04| in ...

7 years ago | 1

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Answered
How do I sort filenames containing text and numbers in numerical order in MATLAB?
If, for any reason, you cannot install this function, you can sort your filenames as follows: [~, reindex] = sort( str2doubl...

7 years ago | 12

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Answered
putting several matrices as one
A = randi( 10, 3, 2 ) B = randi( 10, 3, 5 ) C = [A, B]

7 years ago | 2

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what would be the command to save or open a particular excel data.xls with the designation in a particular drive or folder?
Here is an example. Make sure that the destination folder exists already. If not or if you have to create destination folders dy...

7 years ago | 1

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Answered
finding consecutive NaN in matrix
>> x = [1,2,3,4,NaN,NaN,NaN,7,8,9] ; >> strfind( isnan(x), true(1,3) ) ans = 5 if you just need a "flag found", do...

7 years ago | 1

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How do i remove the letter a user inputs from a word?
Simply: function [newStr, num] = removeLetter( str, letter ) newStr = regexprep( str, letter, '', 'ignorecase' ) ; ...

7 years ago | 1

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can i used cellfun with a function which has more than one input?
Yes, use an anonymous function (or define a function inline |=>| name your anonymous function) to wrap the call to |chart_fun...

7 years ago | 9

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ARRANGING TEXT FILE?
Here is an example, and then we can tailor the solution to your needs from there: content = fileread( 'TEST.txt' ) ; con...

7 years ago | 0

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is subset S a subspace of R3?
Now that you have probably finished your exercise, here is |S| with the origin displayed as a red dot: <</matlabcentral/answe...

7 years ago | 1

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shift array to flat
plot( unnamed, 'b' ) ; hold on ; grid on ; x = (1 : length(unnamed)).' - 1 ; slope = (unnamed(end) - unnamed(1)) / (le...

7 years ago | 0

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how should I copy the selected files to another folder whose name contains 'mytext'
Use copyfile( fname, dest ) ; % or movefile( fname, dest ) ; where |dest| can be defined as dest = fullfile( 'Dest...

7 years ago | 1

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How can i find this minima?
While it is not a very robust method, these points are the last points of the curve before the derivative becomes very negative....

7 years ago | 1

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How to write a semifactorial function that iterates up to the input?
This is a good start as you are trying, as a first step, to operate a bit how you would proceed by hand, element by element in a...

7 years ago | 1

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Error when using isempty in a while loop
This thread should answer you question about what your variable |a| is and how that works: <https://www.mathworks.com/matlab...

7 years ago | 0

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Finding Max difference between column vectors
If it is in absolute value: [M, I] = max( abs( A(:,5) - A(:,6) )) and otherwise remove the call to ABS. PS: if you wa...

7 years ago | 3

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Answered
reject input if it is a string
Here is what I think you don't understand: INPUT evaluates what the user types unless called with a second |'s'| argument (in wh...

7 years ago | 1

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How can I include leading zeros in a number?
Store/read the user input as a string. Or, if you want to bring some flexibility, allow users to enter integers without lead...

7 years ago | 16

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Global variables - is there something better?
Look at my answer there if you want to try using a handle class: <https://www.mathworks.com/matlabcentral/answers/359410-is-it-p...

7 years ago | 0

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Answered
How to simplify this code without having multilevel indexing error???
Here is one way. I build a simple test data set with 4 structs, each |ji| field contains 3 cells, and each cell contains a 2x2 n...

7 years ago | 1

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Storing neighboring coordinates within a sphere from a 3D domain.
Use PDIST2 and get points within a distance smaller (or equal) to the center (node) than the radius. *EDIT :* here is a quick...

7 years ago | 1

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Is it possible to avoid copy-on-write behavior in functions yet?
I agree with most of what is said in the comments/answers. Yet, if you really needed to avoid copies _for good reasons_ in a con...

7 years ago | 5

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How to load large number of files and perform looping through each file?
You can use the output of DIR to produce a struct array of file names/folders and iterate through files: D = dir( '*.txt' ) ...

7 years ago | 0

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How can I select multiple columns in a table using variable names and wildcards?
I am not using tables, so you should probably wait for a better answer, but here is one way that I could see. Say we have the ta...

7 years ago | 2

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Answered
How to read text files form sub-sub folders
Look at the *EDIT 4:09pm* block in the thread: <https://www.mathworks.com/matlabcentral/answers/355855-how-to-read-text-files...

7 years ago | 1

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How to find the number of different strings in a cell array?
Use uc = unique(c) ; to get a cell array of unique strings, and its length is their count. If you need a stat of repet...

7 years ago | 1

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