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I have a text file with 10 lines and 5 columns. I need to write a value (zero or one) at the end of each row, that is, in the last column of each row. How can i do this?
dlmwrite is deprecated, though you could use it in a similar fashion as below: fname = 'filename.txt'; outname = 'out.txt'; M...

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How to skip years with no data when reading the data from a website
You could use continue to move to the next iteration of the for loop.

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DES implementation in MATLAB faacing error in performing XOR operation
a and b apparently do not have the same number of characters. You can confirm this by displaying their sizes: size(a) size(b) ...

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Is there a way to find the x & y intercepts and give it a label?
[~, idx] = min(abs(H_system_Open-pump_curve)); plot(Q(idx), pump_curve(idx),'k*') text(Q(idx),pump_curve(idx),'Label') If you...

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splitting range of rows in separate column
A = readmatrix('filename.xlsx'); len = size(A,1); % Make sure array length is divisible by 17. B = padarray(A,[17-mod(len,17)...

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Data extraction after parallel computing
To debug a parfor loop, first remove the par and try to run it as a normal loop. It's possible something in your funcList is no...

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Plotting a legend without displaying data on UIAxes
colororder = {'r','g','b','c','m'}; x = rand(100,5); label = cellstr(num2str([1:1:size(x,2)]', 'cluster%d')); % Plot a p...

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rename single .txt file with changing seed number
Do you know the seed? testSeed = 454; NewTest = strcat('C:\Users\PC\Desktop\TestData', num2str(testSeed), '.txt') If you want...

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How to export sub/nested structures using writestruct?
If you want to write to a single output file, writestruct() already supports nested structs containing scalar or vector values. ...

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How to export sub/nested structures using writestruct?
In step 3, you are trying to do an rmfield operation on a string array (rmfield is for structs only). If you want to remove the ...

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underwater acoustic wave Signal to Noise Ratio (SNR)
Your individual noise sources add up to a decreasing signal, and I'm not sure af is on the right scale. Should S in the noise e...

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How to avoid rounding error
Matlab is simply truncating the displayed value for ease of reading. format longG sqrt(10001) In both cases, the actual value...

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I keep getting this error...
In your workspace, does a already exist, or some other arduino object? if so, type clear a (or the other relevant object) in ...

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Graph gives warning : function behaves unexpectedly on array inputs. What does this mean?
You are using matrix (linear algebra) operators, which include * and ^. If you try to calculate the function directly, You get a...

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Creating a struct with means and standard deviations
It looks like you want an array of structs. Use strings or uint64 for the IDs S = struct('id',uint64(123456),'mean',rand(3),'st...

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How to make specific elements of a cell equal to zero?
If there's a single value in each cell, you could first convert to a matrix. A = num2cell(rand(3)) Amat = cell2mat(A); Amat...

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I want to draw a scatterplot but there's a problem about range of color
To specify a custom range, you can use a pre-defined RGB colormap (replace 6 with 101 or whatever is appropriate) c1 = parula(6...

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add Gaussian distributed noise
Use normrnd

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For loop error, not getting desired output
At the end of the inner for loop, you set all_correct(columns,1) = correct; Columns == 3 forever, and correct == 4 by that poi...

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Swapping of data points
The hopping happens because the output of roots() isn't sorted in a way that is useful for this script. Further, when you use s...

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pdeplot3d "value of 'colormapdata' is invalid" or "Length of colormapdata vector must equal number of nodes."
I'm not familiar with this toolbox, but... You have a 3D model, but only 2D flux. [qx,qy,qz] = evaluateHeatFlux(thermalresults...

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How to sum two gaussian curve fits (cfit) ?
You could evaluate the fits and add them, though they would no longer be cfits. x = linspace(20,35); F1pts = feval(F1,x); F2p...

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how to work with text files?
fopen is for low-level file operations you may not need. Perhaps try data = importdata('stud_ex.txt') Which will give you a s...

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why is this Matlab Code faster than the C++ code below? I want to understand what Matlab internally does better and faster than C++
I see an efficiency in primes.counter = primes.counter - 1; Matlab uses LAPACK for matrix/vector operations, which I think sho...

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Changing numbers in dataset
For only five values, I think it's pretty efficient to do a direct replacement: ds_new = zeros(size(dataset)) ds_new(dataset =...

8 mois il y a | 1

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Where is the error in my code?
The colon operator has a default spacing of 1. r = 0:0.07 gives: 0, % next value... 1 > 0.07 % so r = [0] Use an intermedi...

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Issues updating vector inside a for loop
When find doesn't find any values > 0.999, it returns an empty vector, with a size of 0x1. Furthermore, max returns an empty vec...

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Increasing Edge Lines in a Surface Plot
sf = fit([x,u],z,'poly15','normalize','on'); xpts = linspace(min(x),max(x),100); upts = linspace(min(u),max(u),100); [xx, uu]...

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Question

Is there a good reason for choosing assert() over an if condition with an error?
I want to make sure a condition is valid, so I write a quick test for it with a boolean output. Does it matter whether I put the...

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How to plot a .txt file when the data is in blocks and each data is separated by space
Wow, that is an inconvenient format. One option is to use the data import tool--right-click on the text file in matlab and "imp...

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