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How can I combine these two MATLAB codes? (MATLAB)
Use the hold command figure hold on plot(t, y2, 'linewidth', 2); plot(t,y,'linewidth',2); and then your other commands for ...

5 years ago | 0

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[SOLVED]: I'm getting the error "Array dimensions must match"
I recommend that you use the debugger to investigate. Specifically, set a breakpoint at the line U = F.*(ones(sz) + Beta.* L); ...

5 years ago | 1

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Why do I get non-zero standard deviation in data with no variability?
Your standard deviaions are zero -- to within the accuracy possible by calculation in floating point numbers. The first referen...

5 years ago | 1

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How can I fit data to a system of implicit equations?
I'm pretty sure that this is a really tricky problem to solve, and I am not certain it can be done in MATLAB. (When I say this, ...

5 years ago | 0

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how can i determine angle between 2 variables
You got the order of the inputs incorrect. It should be atan2(rAy,rAx)*g This will give a negative answer, measuring the angle...

5 years ago | 0

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Not enough input arguments.
How are you calling the function? If you call it like this ... Fillter() then you will get that error because Fillter is expec...

5 years ago | 0

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The logical indices in position 1 contain a true value outside of the array bounds.
You don't give enough information to diagnose why this is happening in your code, but here is an example of that error and how i...

5 years ago | 2

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Illegal use of reserved keyword "end"
In the statement s2=[a2(length(a2)) max([a2,a3,a4,a5,a6,a7,a11,a13,a17,a19,a23,a25,a29,a31,a35,a37]); you seem to have missed ...

5 years ago | 0

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i am a beginner matlab user , and i have problem with the number of decimal places , i need to increase them , what should i do ? here is the code , can anyone just edit it to increase the number of decimal places
You can use the format command, e.g. format long Note that MATLAB always stores the result as double precision by default -- y...

5 years ago | 0

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Using chaotic sequence to generate random numbers
This GitHub repo has a MATLAB implementation. I cannot attest to its quality.

5 years ago | 0

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How can I change this 3-D array(2000,21,80) to 4-D array(1000,20,21,80)?
Did you mean (1000,2,21,80)? If so, then you can use the reshape command: output = reshape(x,[1000,2,21,80]); where x is your ...

5 years ago | 0

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finding a value of x for a given y
interp1(y,x,80)

5 years ago | 0

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Resample from a nonuniform time history while keeping the peak and valley values
There is almost certainly not a built-in function that does this resampling in the exact way you want. Instead, you need to thin...

5 years ago | 0

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"Error using plot, Value not a numeric scalar"
The LineWidth parameter should just be the number 2 (without quotes), not the character '2'. After that, you are going to run...

5 years ago | 0

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Convert each cell to 4D
The best method to do this might depend on how generalizable you need this to be to other cell arrays (with different internal a...

5 years ago | 0

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Fourier transform for a sequence of values
fft(x)

5 years ago | 0

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Why can't I use fplot command ?
fplot expects a function as input. I think you want the plot command instead, which expects numerical vector input ... plot(x_t...

5 years ago | 1

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Correlation of two variables over time: can this happen?
Yes. This is known as Simpson's Paradox. Here is an example: rng default x1 = [1 2 3 4 6 7 8 9]'; x2 = [1 2 3 4 -6 -5 -...

5 years ago | 1

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errorbar for x and y
This code works for me. What version of MATLAB are you running? If you have an older version, and cannot update, then you could...

5 years ago | 0

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matrix variable problem in matlab
This documentation about indexing with logical values might help you understand.

5 years ago | 0

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I want to solve a problem with just numbers from 0 to 2, how do I do that?
Are you sure you copied everything from the assignment correctly? Can you post the text of the assignment here? I did the Gauss...

5 years ago | 0

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how to find index of matrix
It looks like you were checking the wrong columns. row = find (A(:,2)==9 & A(:,3)==5.125) Also, you need to use & rather than ...

5 years ago | 1

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Index exceeds the number of array elements
This is not strictly an answer to your question, but I recommend learning how to use the debugger. Then you will be able to pinp...

5 years ago | 0

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How to plot this figure? please help me.
I suggest you look for code for a similar figure in the MATLAB Plot Gallery.

5 years ago | 0

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How to reorganize an array given an index
Here is one way: % Inputs array = [1,2,3,4,5,NaN,NaN,NaN]; idx_flag = [1,4,8]; % Get length of array for convenience L = ...

5 years ago | 1

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How can I plot a histogram out of a vector of percentages
I don't think you want a histogram (which would create the percentages from the raw data). I think you just need a bar graph.

5 years ago | 0

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how to calculate distance euclidean
c(m,n) is the absolute value of the difference between the m-th element of the vector stored in a and the n-th element of the ve...

5 years ago | 0

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My is my matrix can't multiply with this vector
Your variables tranposeA and y have sizes 2x4 and 1x4, respectively. It is unclear to me whether you wanted a matrix multiplica...

5 years ago | 0

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How to assemble 3D array from four vectors
Here is one way: G = reshape([FF; MF; FM; MM],2,2,6)

5 years ago | 0

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how to graph using loop?
Put the command hold on on the line after figure. See the documentation for the hold command for details.

5 years ago | 0

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