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What is the solution for "Error using griddedInterpolant The grid vectors must contain unique points."
You're interpolating based on the gridpoints located in column J of your Excel file. Each gridpoint must be unique (i.e., differ...

3年以上前 | 1

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Solving nonlinear equations that include integrals with embedded variables
Your call to fsolve: fsolve('LD', UnknownGuess, options, I, P, n, Mo, l, E) Your function syntax for LD: Eq = LD(Unknown, I, ...

3年以上前 | 0

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Answer not Matching (Solution of Linear Equation)
k\f, not f\k.

3年以上前 | 0

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create Continuous sine wave with fixed frequency
freq = 0.2; % freqeuency of sine wave (pick whatever you want) T0 = 200; % period sine wave starts T1 = 240; % period sine...

3年以上前 | 0

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how to Write all Variables in workspace into excel ?
The easiest way is probably to put everything into a cell array and then write it to a .xls file using writecell. The question t...

3年以上前 | 0

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Plot a a matrix by columns but with a different marker for the data at its end
figure hold on % we need this so that successive plotting commands don't overwrite the previous ones % only plot error bars ...

3年以上前 | 0

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How do I create a Markov Matrix with variables instead of numbers for probabilities?
If your goal is to manipulate P symbolically (i.e., algebraically, rather than numerically), then you'll need to use Matlab's sy...

3年以上前 | 0

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Random uniform distribution of nodes within a radius
I had a previous answer here but it occurred to me afterwards that the result wouldn't actually be uniform within the disk. Here...

3年以上前 | 0

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How to find row wise correlation coefficients and p values for two matrices?
n = 3420; R = zeros(n,1); P = zeros(n,1); for j = 1:n [R(j),P(j)]=corr(A(j,:)',B(j,:)'); end If this is just a one-...

3年以上前 | 2

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rounding down using floor
I'm on R2020a on Windows 10 and I also get 0.9921. Is it possible that total does not equal exactly 8.9289? For example, if tot...

3年以上前 | 0

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Error encountered using 'fzero'
First of all, it looks like P is maybe supposed to be restricted to be a positive number, and when it's not, your function retur...

3年以上前 | 1

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Mark smallest bar in 3-D bar plot
My default built-in function for drawing arrows in plots is annotation but I believe that only works in 2-D. As a work-around fo...

3年以上前 | 0

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How do I maintain my array size (or dimensions) when I run it through a nested for loop?
You have 3-D arrays but are only using 2-D indexing (e.g., data(:, shift+1:end) only has two indices, even though data is a 3-D ...

3年以上前 | 0

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Calculating standard deviation of matrix
I'm not sure I quite understand what you want, but a couple of things I see. First, row is a scalar giving the number of rows in...

3年以上前 | 1

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Simulating a Continuous time markov chain
See here: https://www.mathworks.com/matlabcentral/answers/57961-simulating-a-markov-chain Also, if you have the econometrics t...

3年以上前 | 2

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How to compute for the distance between two tensors using matlab?
It depends on how you define "distance". There are many different ways you could do that in principle. One way would be to use t...

3年以上前 | 0

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Saving All Results Of Objective Function in Genetic Algorithm
I'm not sure it's possible to do exactly what you've indicated, but I think you should be able to get something along those line...

3年以上前 | 0

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line is filling two pixels with linewidth of 1 specified
Line widths are specified in points (1/72"), not pixels, and locations on a plot are expressed in the same units as the axes. Wh...

3年以上前 | 0

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How do I plot a timeseries graph using this data?
By "creating a vector of y involving the four variables", I'm guessing you actually mean creating a matrix, i.e., by trying to p...

3年以上前 | 0

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Particle swarm optimization solving an equation system
As far as I know, you cannot directly optimize using complex variables as your optimizing variables, and of course your objectiv...

3年以上前 | 2

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How to exclude range of values in fmincon
One option would be to do a variable transformation in your objective function. So for example, instead of making x your optimiz...

3年以上前 | 1

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When does loop end?
Unless you have a continue statement somewhere (which you don't), everything enclosed between the initial for statement and the ...

3年以上前 | 0

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Write ".m" matlab code files to excel
A few things. First of all, I want to double-check that the file you're talking about is indeed an .m file. .m files are MATLAB ...

3年以上前 | 0

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Correlation computation using a window of 3
I don't entirely understand what you're trying to do, but you may want to use corr(a,b) instead of corrcoef(a,b) or corrcoef(C)....

3年以上前 | 0

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Matrix multiplication optimization for MUSIC DOA
Since your variable A_all is 3x55000x128, this would seem to suggest that, for iteration dir and frequency j, you want to set P_...

3年以上前 | 1

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I have to solve the following
Doing this with anonymous functions is not the way to go (not to mention, your last two functions, dc2D_dt and dcD_dt, have t as...

3年以上前 | 0

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How can I join two parts of a char into just one?
I see a few things. First of all, it seems the reason for the error is that you're trying to assign something to the character a...

3年以上前 | 0

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Solve large linear systems with Parallel computing toolbox
First of all, when I run the code you posted, Matlab gives warnings that A-theta(i)*I is singular to working precision for i=2,4...

4年弱前 | 0

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How to merge two cell arrays?
Couldn't you just do it in a loop? DataMerge = cell(4,1); for j = 1:4 DataMerge{j} = [Data{j,1},Data{j,2}] end Actually...

4年弱前 | 0

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How to vectorize nested for loops that compute pair wise correlations using indexed vectors?
There might be a better way, but here's how I might go about it. function idx_pairs = get_indices_pair_corr(data, idx, idx2, ta...

4年弱前 | 0