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**Feeds**

Finding max value of 1D vector when all values could be negative

V = [1,3,6,3,5,8,3,5,8,3,2] D = diff(V) X = find(abs(D)==max(abs(D))) "I then want to list out the highest say 4 values of th...

10 minuten ago | 0

Error in formatting csv files imported from python

Well, those are some very badly designed files: if they had stored the data as a standard CSV file with one column for each vari...

ongeveer 19 uur ago | 0

How to merge two tables into a single table?

Assuming that the tables already exist: table1 = table(["Smith";"Nguyen";"Williams";"Fernandez";"Brown"],[38;43;38;40;49], ... ...

2 dagen ago | 0

| accepted

saving struct empty give me error

"hi, it's possibile to save empty struct? How can i do it?" Of course, just give the variable name exactly like you would any o...

7 dagen ago | 0

| accepted

trying to extract the months to create a format looks like 202404, how to do that ?

s = ""; % your string array dt = datetime('now') dt.Format = 'MMM yy'; % the format given in your example code s(1) = dt dt....

7 dagen ago | 0

How can I insert a variable into a plot legend, with a special character following the variable?

Using STRING: plot(rand(5,4)) m = pi; legend('','','',"Gradient: "+m+"\circ/mm") Using CHAR: plot(rand(5,4)) m = pi; t = ...

9 dagen ago | 0

| accepted

Lineanchor not working in regexp

My guess is that you have not taken the newline characters into account. Note the difference: tx1 = sprintf('Hello\r\nWorld'); ...

9 dagen ago | 0

How do I convert a decimal number of months to a datetime format?

"The only way I can think of is manually converting by identifying the length of the month the offset represents." Let MATLAB d...

10 dagen ago | 1

How can I keep the first two elements from CSV values in a string

S = ["";"philosopher,historian,writer,political activist,literary critic";"philosopher";"philosopher,writer"] T = regexp(S,'^[^...

14 dagen ago | 0

| accepted

How to compute mean value of a field in a struct?

Rather than nesting lots of separate structures in a cell array, why not just use one structure array?: C = load('featuresnew.m...

15 dagen ago | 0

| accepted

splitting a vector into separate vectors

A much better approach using a cell array: V = [2,2,2,2,2,4,4,4,7,7,8,9] L = diff(find([1,diff(V),1])) C = mat2cell(V,1,L)

16 dagen ago | 0

| accepted

Concatenating Mixed numbers looses the decimal places

"How can I retain the decimal numbers " A = [n,double([MaxI,MinI]),medianMaxIntensity, Hlg,Bren,fwhm2D]; % ^^^^^^^^ ...

21 dagen ago | 0

| accepted

How do I do char2num (assume Ascii)?

https://www.mathworks.com/help/matlab/matlab_prog/unicode-and-ascii-values.html txt = char(120:122) num = double(txt) If you ...

22 dagen ago | 0

| accepted

writematrix: how to get formatted txt-output?

M = [100,0,4500;0,1,38.29;1,1,38.22] S = join(compose("%10.2f",M),''); writelines(S,"test.txt") Checking: type test.txt

22 dagen ago | 0

Submitted

Convert between RGB and Color Names

RGB to color name. Color name to RGB. Supports many palettes: CSS, dvips, HTML, MATLAB, RAL, SVG, X11, xcolor, xkcd,...

23 dagen ago | 25 downloads |

Random number vector with only two values

Indexing is a basic MATLAB superpower. You can easily use indexing to select from a vector of any values: V = [0,pi]; W = V(ra...

23 dagen ago | 1

| accepted

Character string to numeric vector

txt = ' ( 0.0357 -0.0001 0.0051) ' vec = sscanf(txt(3:end),'%f',[1,3]) or vec = sscanf(strtrim(txt),'(%f%f%f',[1,3])

26 dagen ago | 0

how to delete the files in a folder using matlab?

delete(fullfile(inpath,baseGran,'sigma*.img'))

26 dagen ago | 1

Looping string array into parsed timestamp

"... that is causing issues with the indexing." Because you are mixing up indexing into string arrays with the characters conta...

29 dagen ago | 1

| accepted

Combining text with non-zero elements of a 2D array

Without an intermediate matrix: N = [10,0,0,0,0;,0,20,0,0,0;,10,0,20,0,0;,0,0,0,10,0;,0,0,0,0,30] C = {'ABC';'DEF';'GHI';'JKL'...

30 dagen ago | 0

| accepted

In a table, when I try assigning a value to a new column based on some criteria, I get error that "assignment to elements using simple assignment statement is not supported"

"I don't think I should need a for loop to iterate through each row and replace the value at the "indx" location" You do not ne...

30 dagen ago | 0

| accepted

How to replace values in a table with the outputs of another code?

Use curly brace indexing to access the content of the table: https://www.mathworks.com/help/matlab/matlab_prog/access-data-in-a...

ongeveer een maand ago | 0

| accepted

Matlab function only giving me 1 output

"why is my Vmax just giving me 1 value." Because you used mrdivide / (matrix right division) instead of rdivide ./ (array right...

ongeveer een maand ago | 2

Customizing plots that are matrices of column vectors?

X = 1:9; Y = rand(9,2); S = scatter(X,Y); set(S,{'Marker'},{'o';'*'})

ongeveer een maand ago | 1

How to use lazy quantifiers in look ahead?

Regular expressions are the wrong tool for this. It might be possible with some effort, but personally I would just use the corr...

ongeveer een maand ago | 0

| accepted

Submitted

Interactive Regular Expression Tool

Develop and refine regular expressions in an interactive figure that shows all of REGEXP's outputs.

ongeveer een maand ago | 8 downloads |

Loop through a table using a specific condition and generate new table satisfying the particular condition

ID = ["ID1";"ID1";"ID2";"ID3"]; Value = [5;7;3;1]; T = table(ID,Value) G = groupsummary(T,'ID','sum')

ongeveer een maand ago | 0

locate within the first column of a matrix a sequence of numbers and extract those rows

Use DIFF, which is a key MATLAB function. M = load('M.mat').M X = diff([0;find(diff([M(:,1);0])<0)]); Y = size(M,2); C = mat...

ongeveer 2 maanden ago | 0

| accepted

Rearrange elements of matrix based on an index matrix

Yes, it is awkward. x=randn(5,3) z=randn(5,3) [~,I] = sort(x,2) Perhaps S = size(I); [R,~] = ndgrid(1:S(1),1:S(2)); J = s...

ongeveer 2 maanden ago | 0

| accepted

Is this a bug of MATLAB?

"I think the correct answer should be longer. Is it a bug or an expected behavior?" It is not a bug: the default number of dig...

ongeveer 2 maanden ago | 1

| accepted