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How to use "image" function to view images (JP2, PNG, BMP, etc) with alpha channel?
The accepted answer is incorrect. "When I do "a = imread(filename)" and "image(a)", it gives the following errors..." "The var...
5 hours ago | 1
How to iterate through a cell array to mean each ith column from each matrix within the cell array?
Fake data (I removed the superfluous outer loop): for k = 1:5 C{1,k} = rand(500,26); C{2,k} = rand(500,24); C{3,...
16 hours ago | 1
Not recognising named input argument
The name "is_fbk" is not defined as a named argument. Because by definition named arguments must come last AND all inputs betwe...
21 hours ago | 0
| accepted
Reconstruct a compressed vector based on another one with equal space entities
VC = [1,20,-4,23,6,3,7,-23] PC = [2000,2250,2500,2750,3750,4000,4500,4750] PV = PC(1):250:PC(end) VV = nan(1,numel(PV)); VV(...
2 days ago | 0
| accepted
determine if a datetime value is on a different day
"Functions like between and caldiff seem to return a duration" BETWEEN and CALDIFF will not help you. Either use DATESHIFT or t...
4 days ago | 0
| accepted
Submitted
Number to Scientific Prefix
Convert a numeric value to SI-prefixed text (aka engineering / metric prefix). Bonus: binary prefixes!
6 days ago | 9 downloads |

Submitted
Scientific Prefix to Number
Convert SI-prefixed text (aka engineering / metric prefix) into numeric values. Bonus: binary prefixes!
6 days ago | 2 downloads |

Three dots at the end of a line of code
Perhaps code folding. Code folding is stored as meta-information in PREFDIR, much like breakpoints etc. are. Unfortunately some...
7 days ago | 3
| accepted
reading text fils with data importing
It would be much better if you uploaded a sample data file by clicking the paperclip button. In lieu of that I created my own d...
9 days ago | 0
| accepted
Move to MxN cell array to 1xN cell array
C = load('CellMatrixExample.mat').EmissivityMat F = @(c)vertcat(c{:}); C = cellfun(F,num2cell(C,1),'uni',0)
10 days ago | 0
| accepted
reshape 4-dimension array
https://www.mathworks.com/help/matlab/ref/double.permute.html https://www.mathworks.com/help/matlab/ref/double.reshape.html A ...
13 days ago | 1
| accepted
Can someone explain why the top code works but the bottom one has an error that says "Index exceeds the number of array elements. Index must not exceed 1."
"Can someone explain why the top code works but the bottom one has an error that says "Index exceeds the number of array element...
14 days ago | 0
| accepted
MATLAB Indexing type dependence (bug?)
"what does it matter to the indexing whether it is a single or a double?" Because single precision cannot represent all of thos...
15 days ago | 0
| accepted
Avoid negative sign with compose() when output is zero, e.g. '-0' or '-0.0'
num = -0.04; txt = compose('%.1f', num) txt = regexprep(txt,'^-(0+(\.0+)?)$','$1')
15 days ago | 0
| accepted
Why do my plots overlap instead of showing up side-by-side?
Explanation: TILEDLAYOUT was written assuming one axes in each tile position. When you create a 2nd (or more) axes in a specific...
15 days ago | 0
| accepted
Separate data series based on parameter within the data.
A = [1,12,13,14; 1,21,23,24; 2,32,33,34; 100,42,43,44] [G,ID] = findgroups(A(:,1)); Method one: F = @(x)A(x==A(:,1),:); C = ...
17 days ago | 0
The surface area won't round to one decimal place and I don't know how to get rid of the 'e's.
https://www.mathworks.com/help/matlab/ref/format.html Do not mix up the data stored in memory with how those data are displayed...
18 days ago | 1
LaTeX interpreter with multiple strings or character vectors
Without even reading the XTICKLABELS documentation lets first do some basic reasoning: is a single character vector. XTICKLABEL...
19 days ago | 0
| accepted
Fast reorganization of cell arrays
The timings might be similar for small arrays, but try testing on larger arrays! tic % Initialize target and source arrays tg...
20 days ago | 0
| accepted
Left Justifying a String obtained from the formattedDisplayText() function
You would have to delete all leading space that occurs after any newline characters, e.g.: str = regexprep(str,'^[ \t]+','', 'l...
22 days ago | 0
| accepted
Sort array based on particular rows
format long G M = load('matlab.mat').out X = -fix(2*(0:size(M,1)-1)/11); [~,Y] = sortrows([X(:),M],'descend'); Z = M(Y,:)
23 days ago | 0
| accepted
Extract data using variable names
https://www.mathworks.com/matlabcentral/discussions/tips/849901-tutorial-why-variables-should-not-be-named-dynamically-eval The...
23 days ago | 1
| accepted
Calculations involving indexed variables and creating data tables
Lets first create some fake data (because you did not upload any sample data): T = array2table(rand(7,4),'VariableNames',{'X','...
23 days ago | 0
| accepted
vpa does not work with the desired amount of digits
You need to set the digits first: https://www.mathworks.com/help/symbolic/digits.html The default is 32. "returns an answer w...
23 days ago | 3
Alligning the output using fprintf
I = [0.0039,0.0038,0.2,0.402,0.628,0.837,1.069,1.234,1.436,1.666,1.79,2.05,1.8,1.54,1.42,1.24,1.03,0.8,0.61,0.4,0.18,0,-0.19,-0....
24 days ago | 0
| accepted
xlsread multiple files from multiple folders
S = dir('Y:\Projects\*\*.xls'); W = 'Logic'; for k = 1:numel(S) F = fullfile(S(k).folder,S(k).name); [num,str] = xls...
24 days ago | 0
Convert a cell containing structs into a single Struct
Avoid evil EVAL(). Constructing text that looks like code and then evaluating it should definitely be avoided. Using comma-sepa...
28 days ago | 1
| accepted
how to load and read sparse matrix from txt file to MATLAB ?
N = {}; C = {}; F = fopen('Ksparse.txt','rt'); while ~feof(F) N{end+1} = strtrim(fscanf(F,'%[^[]')); C{end+1} = spc...
28 days ago | 1
vector conversion from a vector of numbers to a vector cell of chars.
Y = [0,4,6]; X = cellstr(string(Y)) X = arrayfun(@num2str,Y,'uni',0) X = compose('%u',Y(:)).' X = split(num2str(Y)).' X = n...
1 month ago | 1
| accepted
Matlab spdiags function not do what I expect
"Why is C so different from the previous two?" Look at your code! On this line you completely overwite B with a completely diff...
1 month ago | 0
| accepted