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convert smaller number to large number in matlab
If you want to change the default display style in command window then run this line format long G and then display the number...

3年以上前 | 2

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how to change some parameter of a m-file from command window
.m file is a text file, so you can use all the functions to manipulate text files; for example, check the list of the function h...

3年以上前 | 0

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Adding zeros at the end of arrays in a loop
Finally, you have encountered the problem of naming variables like var1, var2, var3, ... This thread has a detailed discussion o...

3年以上前 | 0

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how to creat an algorithm to inverse matrix
There are several algorithms for calculation of matrix inverse: https://en.wikipedia.org/wiki/Invertible_matrix#Methods_of_matri...

3年以上前 | 1

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3D hypercube to 2D array
No, If you want to read the elements left to right then first you need to permute the 1st and 2nd dimensions A; % 250x250x150 ...

3年以上前 | 0

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create a matrix from a text file
Try sub2ind(): https://www.mathworks.com/help/matlab/ref/sub2ind.html to convert from row and column number to a linear index. S...

3年以上前 | 0

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finding point on a function
You can use polyval() xv; % x data-points yv; % y data-points p = polyfit(xv, yv, 3); x = a; y = polyval(p, x);

3年以上前 | 1

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how to plot given exponential fn?
Several ways: mesh(), surf(), contoruf(), contour(), pcolor(), imagesc() [X, Y] = meshgrid(linspace(-1, 1, 50)); Z = exp(X.^2+...

3年以上前 | 1

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Gaussian distribution with sum 1
What about M = randn(10); M_sum1 = M./sum(M, 'all'); Check: >> sum(M_sum1, 'all') ans = 1

3年以上前 | 0

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Graph an exponential equation
You can use fsolve() for such problems. For example fun = @(x) exp(-0.005*x).*cos(0.05*(2000-0.01*x.^2).^(0.05))-0.01 sol = fs...

3年以上前 | 0

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Finding angles with optimizaiton
You need at least two equations to find a unique solution. For a single equation, fix the value of one of these variables theta...

3年以上前 | 0

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mean value of array after every n columns
Here is a loop-free option a = matfile('x'); b=a.dataPower; %dataPower array bround=round(b(1:131072)); k = mean(reshape(bro...

3年以上前 | 0

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Whats the difference when using [ ] and : ?
reshape() work by taking the elements of the input matrix column-wise and arrange them into the shape you want. For example, hel...

3年以上前 | 1

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Function XXXX not supported for code generation.
By default, Simulink converts the whole model to C code. If you are using this inside a MATLAB function block, you can use coder...

3年以上前 | 1

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imwrite saving image incorrectly
Does your png image have transparent components? Try saving with the alpha channel. [file, path] = uiputfile('.png'); [image, ...

3年以上前 | 0

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Transfer function with 2 inputs and 2 outputs
Study this code syms x(t) v(t) I(t) F(t) s v(t) = diff(x, t); eq = diff(v) == (562/101)*x+(6744/101)*I+(1/50500)*F; lap = ...

3年以上前 | 0

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Structs Help on indexing
Try something like this city_name = 'Abidjan'; idx = contains({climate.info.name}, city_name); city_data = climate.info(idx)

3年以上前 | 0

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Is there an other commande in previous matlab version which remplace the commande "serialportlist" ?
Previously there were instrfind() and instrfindall().

3年以上前 | 0

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How to take a difference within the data of the same city but not across the city, Part 3
Same answer as this: https://www.mathworks.com/matlabcentral/answers/685423-how-to-take-a-difference-within-the-data-of-the-same...

3年以上前 | 0

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How to take a difference within the data of the same city but not across the city, Part 2
Same answer as this: https://www.mathworks.com/matlabcentral/answers/685423-how-to-take-a-difference-within-the-data-of-the-same...

3年以上前 | 0

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How to take a difference within the data of the same city but not across the city
Try this T = readtable('test.xlsx'); New_Visitors = splitapply(@(x) {[x(1); diff(x)]}, T.Cumulative_visitors, findgroups(T.Cit...

3年以上前 | 0

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Unable to convert expression into double array
It seems that some terms in your integral cannot be solved symbolically therefore MATLAB throws this error. You can try to calcu...

3年以上前 | 1

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Intersection of a row and column from a matrix
Are you looking for this? p=[1 2 3;4 1 2;2 8 1]; x = input('x? '); y = input('x? '); P = p(y,x)

3年以上前 | 0

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Combine the results of each iteration into an array
Use fprintf() a=1;b=2;c=3; for t=[a b c] fprintf('%d ', t) end fprintf(newline)

3年以上前 | 0

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4byte uint8 array to single uint32 value
You can use typecast() myArray = [0x32 0x45 0x56 0x81]; out = swapbytes(typecast(myArray, 'uint32')); % swapbytes is needed on...

3年以上前 | 4

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Applying a function across all columns of a table
See varfun(): https://www.mathworks.com/help/matlab/ref/varfun.html. Convert your code into a function like this function y =...

3年以上前 | 0

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How to export a matrix of numeric values to Excel using writematrix
The documentation mentions that the newer functions have better cross-platform support and performance as compared to xlswrite. ...

3年以上前 | 0

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How can I find coordinates via matlab command?
It appears that there is no built-in function. You will need to use the API of an external service, e.g., google map, to get thi...

3年以上前 | 0

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How do I index an entire row given a randomised value?
You can use logical indexing El_mat = [...., 34 0.214 0.236 0.588, 35 0.259 0.336 0.114,....] n = 34...

3年以上前 | 0

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How to upload a .mat file into Amazon s3
You can use API to write the data: https://www.mathworks.com/help/matlab/ref/webwrite.html, but that can get complicated for AWS...

3年以上前 | 0

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