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What is wrong with this code for finding out the number of significant digits after decimal?
The least unexpected number of non-zero fractional digits aka decimal places (limited to 15 significant figures of the binary fl...

casi 2 años hace | 0

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Not enough input arguments
"Why I can't get the values from matrix x in function MyInput() to use in another function?" Basically because you did not call...

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Reading Multiple Excel Files, Analyzing and Indexing
Use indexing into the structure array that you already have (i.e. the output from DIR): P = 'absolute or relative path to where...

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there is no plotting appearance
"there is no plotting appearance" Because you are plotting exactly one data point. By default there PLOT shows lines (which con...

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Interpolating for multiple curves and finding the y axis value
Forget about having lots of separate variables in the workspace. Learn to use matrices! x = [0,7.1702,9.1995,9.5716,11.3641,12....

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Change date from cell to number inside array
" How do I change it from a cell to a numeric format I can use?" Use the correct type of indexing: if itin_full{1,6}>=0.9 % ...

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help using bsxfun to multiplay different size matrixes
tmp = bsxfun(@times, norm_mode, reshape(fields(:,3),1,1,[]))

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Bar() very thin, does not respond to width argument
"I have a problem with Bar() function" No, you have a problem with ZEROS() function. In particular you have only specified ZERO...

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How to validate that one datetime is greater than another
Do NOT convert to low-precision serial date numbers! Avoid deprecated DATENUM ! Argument validation lets you define your own va...

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Matrix does not want to multiply and gives an error when I multiply a 3x3 matrix with a 3x1 matrix
Read the INV documentation! And then use the recommended function MLDIVIDE: A = [9, 29.3, 140.99; 29.3, 140.99,827.693; 140.99,...

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alternative of inline function
If you want a derivative, why are you using a function handle? Using symbolic toolbox would be simpler: syms x f = x^2-2*x g ...

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Find minimum values based on unique number
P = load('matlab.mat').Prof_temp S = groupsummary(P,"Profile_num","min","Temp") plot(S.Profile_num,S.min_Temp)

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Spli cell array directly at the function output
If you can modify the function to return another output argument the size of the returned cell arrays is only known when they ...

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How to fix loop which over the determined index ?
"Hi guys, im trying to do looping ii 1:900 but why when u run it, it was never-ending loop." I already told you the reason why,...

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Duration type doesn't preserve seconds accuracy
"Duration type doesn't preserve seconds accuracy" That is exactly what CALENDARDURATION objects are for: format longg dt1 = d...

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Find min and max in groups
A = [12, 11, 12, 5, 3, 10, 5]; B = [0.1, 0.1, 0.1, 0.7, 0.4, 0.3, 0.2]; X = 1:numel(A); Fmax = @(x){x(max(B(x))==B(x))}; Fmi...

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Use save function with '-fromstruct' option to save a cell array
As the error message states, the structure must be scalar: test_file = 'test.mat'; files = {'test1.m', 'test2.m'}; T = ones(1...

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How to write to csv file in shortG format?
Here is one approach that gives exactly the shortG format in your CSV file: format long G M = rand(3,5); M(1) = -6.0247123456...

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I need help with an error I get
Perhaps the input argument should be F (not f): function [posicao, velocidade, aceleracao] = atleta(t, F, M)

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When multiplying or dividing a vector by a scaler, when do you need a period before the operator?
"When multiplying or dividing a vector by a scaler, when do you need a period before the operator?" Lets consider multiplying. ...

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Observations being read as number of columns instead of rows
Perhaps because the data are (complex conjugate) transposed here: 'ValidationData', {stan_x_val', stan_y_val'}, Note that yo...

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Need help figuring out why this nested function is not working
"File not found" You are not providing FOPEN and READMATRIX with the filepath, so they cannot find the file on your computer. P...

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Can't seem to replace values in matrix meeting criteria, although the correct row,col coordinates are found
Use SUB2IND: idx = sub2ind(size(img),row,col); img(idx) = 1; The section "Indexing Matrices with Two Subscripts" here: https...

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Compare two files and remove any lines in the second file when they match values found in the first file
lines1 = [1,2,3,4;2,4,6,7;2,5,7,8;6,7,4,6] lines2 = [2,4,6,7;2,5,7,8] out = setdiff(lines1,lines2,'rows')

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A more efficient or compact way to sort strings that contain dates
a = [... '123_abc_01_202403020000_202403022359.txt'; '123_abc_01_202403040000_202403042359.txt'; '123_abc_01_2024...

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Portion of code containing my custom functions is hidden and I cant access it.
The feature is called code folding: https://www.mathworks.com/help/matlab/matlab_prog/edit-and-format-code.html#brazeg3-1 http...

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How can I access the value of a string variable? I need to construct a file path from a string variable, but keep getting the variable name and not the string.
It works perfectly, exactly as you showed in your question: directory_name = "directory1"; f = fullfile('/Users/me/ch4', direc...

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Appending data when extracting nested fields as individual variables
The simple and efficient MATLAB approach using two comma-separated lists (no loops are required!): first100 = load('frames.mat'...

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char array to numeric array
"I was wondering if there was a better way of doing this?" Of course, use READTABLE (or READMATRIX): unzip tab_file_table.zip ...

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I'm trying to convert the text into binary and then i want to make the 4 bits chunks.
message = 'Hello world'; A = dec2bin(message, 8) B = reshape(A.',1,[])

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