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Help rewritting textfiles in a certain way
This can probably be streamlined, but I think it achieves what you are looking for: % read the test data into a 1x1 cell and co...

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How to get row and column from a vector size
Assuming the vector length being a prime number (as noted by @the cyclist) is just one possible case of many, then the following...

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How to plot based on the shortest vector?
So, the approach I think you are willing to take is just to ignore the few extra elements that are in the longer of the two vect...

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Best equation for Curve Fitting
How about r = .9999? Linear model Poly9: f(x) = p1*x^9 + p2*x^8 + p3*x^7 + p4*x^6 + p5*x^5 + p6*x^4...

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How can a 4 element array index pull stored string values?
I think this is more or less what you are after. The output is generated both as a cell array and as a string vector. % create...

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Using System.DateTime in a Timetable
This converts the System.DateTime variable returned by netTime to a datetime variable, which can then be used with timetable: t...

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Change color of x axis and y axis barplot
I think this achieves what you are after. Note that plotyy is "not recommended". a = [rand(3,1)*100, zeros(3,1)]; b = [zeros(...

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Scatter Plot Legend Issue With Assignment
You only need to call the scatter function once. Re-organize your data, combining the values into a matrix. Then, you'll get ...

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Do error bars affect confidence intervals?
You note: when I use the errorbar function in the code of the fit, it doesn't seem to change the confidence intervals The ...

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Help with plotting data in a mat file
I think the error might be in how you are verifying your script. I ran your script and generated the plots. Here is what I see ...

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Changing prime numbers in a matrix
M = randi([1 50],100); M(isprime(M)) = 1415;

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How to extract value from matrix in a cell array?
>> cell{1}(1,3) ans = 5

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Using a for loop to print function values
Seems you are confusing Vs with V. And what is VL-0.6 in your question? Try this... (outputs a vector of values) V = rand(1,1...

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How to find area under graph between two points ?
Assuming you want the area under the curve between two values of x (the "specific points" in your questions), here's what I put ...

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How to extract data from an array?
t(700:1900) P(700:1900) Really, this is pretty basic stuff. I suggest you review Accessing Array Elements.

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Why is logical array fasle?
The result is false because k1 DOES NOT EQUAL g Note that both k1 and g are scalars, not vectors. Therefore, the result of k1=...

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How to remove space between grouped bars in a bar graph?
Here's an approach that might be useful. What if you ungroup the data first? There will be no space between the groups, because...

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saving files in a loop with different names
for k=1:20 ... filename = sprintf('info%d.dat', k); writematrix(M, filename); % data in M ... end

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Can I do a repeated-measures three-way ANOVA with 2 within and one between variable?
Yes. Here's an example script I used recently for such a design. The within-subjects factors are Layout (2 levels) and Trial (...

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Creating a piecewise function
A few bugs in your code. Here's the fix (although there are easier ways to do this): x = 0 : 0.5 : 4; for k = 1 : length(x) ...

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put labels inside colorbar
Just add tick labels to the colorbar: plot(rand(1,5)); h = colorbar('northoutside'); h.TickLabels = { -.4 -.3 -.2 -.1 0 .1 .2...

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plot values of same index from two vectors
Here's what I put together. It looks a bit crazy because the data are just random numbers. But, I think it achieves more or le...

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New point calculation - for loop
No need for a loop: % arbitrary point for beginning (perhaps longitude) x1 = randi([1 1000],1); y1 = randi([1 1000],1); % ...

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Samples in generating a given signal
There are 128 values in the vector [0:127]: 0, 1, 2, 3, ... 126, 127 If the vector was defined using the term 128, as in yo...

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Extract Numerator and Denominator of a vector (ratio)
It is not entirely clear what you are trying to do. Your 1st for-loop does nothing, since all the values are positive. However...

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Rms calculation of specific rows
The rms of the data in column 3 in the matrix filedata is rms(filedata{:,3})

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How to read specific lines from text file?
No need for a loop. Since your data are rectangular and the data in each column are of the same type, you're best option is to...

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How can i plot three periods of a signal
If you want to plot three periods of a signal and do it by extracting the data from your existing code, then t=[0:0.0002:20]; ...

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How do i get the sound of a cosine signal
You've only got 100 sample points and the sampling rate is too low. Try this... t=[0:0.2:2000]; xc1=cos(2*pi*493.88*t); soun...

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How to take mean of integers value?
You need to use braces because your data are in a table: mean(LSinclination{:,5}) If it's just the integer values you want the...

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