Réponse apportée
Problem graphing the % error between a real function and its linearization using contourf in MATLAB
"I think the problem is the way I'm calculating the %Error between those two functions..." That is the problem, because you are...

environ 2 mois il y a | 1

| A accepté

Réponse apportée
How to use "image" function to view JP2 images with alpha channel?
The accepted answer is incorrect. "When I do "a = imread(filename)" and "image(a)", it gives the following errors..." "The var...

environ 2 mois il y a | 2

Réponse apportée
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,...

environ 2 mois il y a | 1

Réponse apportée
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...

environ 2 mois il y a | 0

| A accepté

Réponse apportée
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(...

environ 2 mois il y a | 0

| A accepté

Réponse apportée
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...

environ 2 mois il y a | 0

| A accepté

Réponse apportée
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...

2 mois il y a | 3

| A accepté

Réponse apportée
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...

2 mois il y a | 0

| A accepté

Réponse apportée
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)

2 mois il y a | 0

| A accepté

Réponse apportée
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 ...

2 mois il y a | 1

| A accepté

Réponse apportée
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...

2 mois il y a | 0

| A accepté

Réponse apportée
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...

2 mois il y a | 0

| A accepté

Réponse apportée
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')

2 mois il y a | 0

| A accepté

Réponse apportée
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...

2 mois il y a | 0

| A accepté

Réponse apportée
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 = ...

2 mois il y a | 0

Réponse apportée
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...

2 mois il y a | 1

Réponse apportée
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...

2 mois il y a | 0

| A accepté

Réponse apportée
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...

2 mois il y a | 0

| A accepté

Réponse apportée
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...

2 mois il y a | 0

| A accepté

Réponse apportée
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,:)

3 mois il y a | 0

| A accepté

Réponse apportée
Extract data using variable names
https://www.mathworks.com/matlabcentral/discussions/tips/849901-tutorial-why-variables-should-not-be-named-dynamically-eval The...

3 mois il y a | 1

| A accepté

Réponse apportée
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','...

3 mois il y a | 0

| A accepté

Réponse apportée
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...

3 mois il y a | 3

Réponse apportée
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....

3 mois il y a | 0

| A accepté

Réponse apportée
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...

3 mois il y a | 0

Réponse apportée
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...

3 mois il y a | 1

| A accepté

Réponse apportée
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...

3 mois il y a | 1

Réponse apportée
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...

3 mois il y a | 1

| A accepté

Réponse apportée
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...

3 mois il y a | 0

| A accepté

Réponse apportée
Hi everybody. I'm kind of new to MATLAb and looking to get more efficient in my coding. This feels clunky to me and I feel like I could definitely shorten it. Any ideas?
Vectorize your code: https://www.mathworks.com/help/matlab/matlab_prog/vectorization.html Engine = ["LO2/LH2";"LO2/CH4";"ST...

3 mois il y a | 0