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Extract numbers from matrix based on logical array
x =[ 0.5853 0.2551 0.8909 0.2238 0.5060 0.9593 0.7513 0.6991 0.5472].'; y =logical([ 0 1 1 1 ...

約3年前 | 1

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How to know the range automatically identified by readtable when importing an Excel file?
It will be only as good as the ability of the detectImportOptions bot's ability to recognize the start of the data, but opt=det...

約3年前 | 0

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I am using writetable for exporting the workspace variables into excel sheet
Read the rest of the doc, specifically the <named parameters for spreadsheets only> section, you'll be particularly interested i...

約3年前 | 1

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How do I create a For loop from a string array that will fill and load h5 files?
I didn't see @Stephen23 had already addressed the main iissue, but had already started, so... d=dir('*Walk.h5'); for i = 1:num...

約3年前 | 0

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Converting table data to datetime
tbldata=readtable('pipe2_st.csv'); tbldataarray=table2cell(tbldata); Don't convert the table to a cell array, use the table yo...

約3年前 | 0

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Changing step tolerance for lsqcurvefit
opt=optimoptions('lsqcurvefit'); opt.StepTolerance=1E-8 in your code above ... Dab = lsqcurvefit(@f, x0, t, c) % fitting Dab...

約3年前 | 0

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Why is FFT result divided by NFFT instead of the root of NFFT?
Well, let's try it and see... Fs = 1000; % Sampling frequency T = 1/Fs; % Sampling period L = 1500; ...

約3年前 | 1

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Find the average between each pair of points in a matrix
I'd do it as z=randi([-5 5],8) za=filter2(ones(2)/4,z) % averaging 2D filter with same size as input (zero padded) zv...

約3年前 | 1

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Array rows differences and array filling in a loop
The cell array @Jon shows is simpler to code and what first strikes, but the answer to the Q? as you posed it to store into the ...

約3年前 | 1

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How do I edit this bar graph so that the weights appear equally distanced on the x-axis with 4 bars for each weight, all of different colour.
The weights vector is 'x' There are examples of grouped bar plots at the doc page...sorry, I said 'stacked' before; that's what...

約3年前 | 0

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Fit a equation to a scatter plot in log log scale with the given parameters
fn='https://www.mathworks.com/matlabcentral/answers/uploaded_files/1350879/Data_1.xlsx'; A=readmatrix(fn); x=A(:,1); y=A(:,2)...

約3年前 | 0

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How do I edit this bar graph so that the weights appear equally distanced on the x-axis with 4 bars for each weight, all of different colour.
Use X as a vector as categorical (or if numeric, use 1:N and then write the x tick labels with the desired values for display), ...

約3年前 | 0

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How can I pass a large function into ODE45?
Write your function as an m file and pass a handle to it; don't try to do stuff in scripts or complicated stuff as anonymous fun...

約3年前 | 1

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Extract matching row from another cell array
Air code; the load operation didn't work online... >> load all_files >> pieces=split(extractBefore(all_files,'.'),'_'); Error...

約3年前 | 0

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how to find the location of a specific element in a matrix or in a excel file
What do you mean "to find the location of each element"? You mean just read the file, don't you; the location is really of very...

約3年前 | 0

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How I can find a specific word in a notepad text?
"i want to find the word " lege" in the document and then to count how mnay times apear this specific word" txt=readlines('your...

約3年前 | 2

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Matlab App Designer - Output to TextArea Error - 'Value' must be a character vector, or a 1-D array of the following type: cell array of character vectors, string, or categori
app.ClassificationTextArea.Value{i+1} = classification; tries to address the .Value property as a cell array which it doesn't s...

約3年前 | 0

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Editor Text Is Too Small
The Editor Font selection is buried under the "Fonts -- Custom" menu in the Preferences. Why it's not associated with the Edito...

約3年前 | 1

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Formatting read data from text files
txt=readlines('YourInputFile.txt'); % read text file as string array fprintf('%s\n',txt) % dumpt to com...

約3年前 | 1

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How to exctract specific elements from .txt file?
d= [' 4; 65; 7.5; MGK ; 4; 5; 66; MARKUS; 46.63641; 65' '11; 26; 5 ; LEON ; 78; 93; 88; LUTHER; 50.3554 ...

約3年前 | 0

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I plotted 2 plots each with error bars, but the legend is not showing the symbols correctly, how to solve it?
a = [1:5 ]; b = [6:10]; x = [1:5 ]; mu1 = mean(a); cig1 = std(a); err1 = cig1; mu2 = mean(b); cig2 = std(b); err2 = cig...

約3年前 | 0

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number of significant digits for the coefficients in curve fitter (polynomial, with two degree)
All are estimated to full double-precision; the number of digits that are displayed is solely dependent upon how you look at the...

約3年前 | 2

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how to print datetime in fprintf
We don't have sufficient data to reproduce the problem -- we don't have definitions of ProfName, ProfDateNum, nor indNaN Guess...

約3年前 | 1

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try...catch for memory full error in imaq toolbox ?
Well, you probably can manage to do it from the above, but it's peculiar as Bruno notes...observe if we take your monitoring dat...

約3年前 | 0

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How to convert matrix or vector in Matlab workspace into C/C++ array usable in ".c" file?
a=1:5; vname='a'; precision=16; fmt=['uint%d_t %s={' repmat('%d,',1,numel(a)-1) '%d}']; c_code=sprintf(fmt,precision,vname,a...

約3年前 | 0

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Why is there such a big difference between the fitting results of 'exp2' and the same form of custom function?
The biggest difference is probably found in the documentation under the 'Nonlinear Least-Squares Options" parameter 'StartPoint'...

約3年前 | 1

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csv file wrong numbers filled with MATLAB
"(attached a screenshot of the function definition)..." Don't use images for code; attach the text and format the code. Nobody...

約3年前 | 0

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How to change the Xtick direction of ONLY one of the two (top or bottom) X-axis lines ?
% my plot figure plot(1:9) % properties hAx1 = gca; hAx1.XAxis.TickDirection='out'; hold on hAx2=axes('Position',hAx1.P...

約3年前 | 1

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For Loop Starting at Zero
H = 0.1; I = 200; Y = 0; BI = zeros(I,1); b = pi; for i = 1:I b = fzero(@(b)(b*tan(b)-H),b); BI(i,1) =...

約3年前 | 0

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Make changes to multiple files simultaneously?
Notepad++ has a feature that may work if you can make the replacement with a [regexp] expression as a substitution. Alternative...

約3年前 | 0