Write a function called valid_date that takes three positive integer scalar inputs year, month, day. If these three represent a valid date, return a logical true, otherwise false. The name of the output argument is valid.
Looks like you are taking the same class as Rahul. Rather than repeat my answer here, I will simply direct you to the link: ht...

ungefär 2 månader ago | 0

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sum of multiplication for a vector and matrix
result = sum(b*A);

ungefär 2 månader ago | 1

I need some help in seeing where I am going wrong and how to proceed with writing a particular funciton for a MATLAB course I am taking please.
Some issues: n is a fixed input ... you should not be changing n inside your function. Get rid of that n = n + 1 statement. T...

ungefär 2 månader ago | 1

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Use of int vs size_t in mex compilation of C-function dgemm.
If you are linking to the MATLAB supplied BLAS/LAPACK libraries, then all of the integer types being used for arguments to these...

ungefär 2 månader ago | 0

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For loop to extract every 3rd column out of matrix and assign as variable name
Do not do this! This will only lead to headaches downstream in your code for processing these variables (you will need to use m...

ungefär 2 månader ago | 1

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random generator on level of bytes
Generate random integers and then multiply them by 8 to guarantee that the result is divisible by 8. E.g., something like: max_...

Calculate sum of series using for
Here is an outline to get you started: a = something; % you put a value here m = something; % you put a value here x = someth...

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Decimal to Binary Conversion
E.g., bstream = reshape(b',1,[]); If you want characters, then bstream = char(reshape(b',1,[]) + '0');

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How to output a vector/array from a created function
Don't use size(inputVector) for your loop indexing limits since this is a vector. Use numel(inputVector) instead. Also, you sho...

Cpp to Mex conversion
Looks like you have a mismatch with variable types, probably an older piece of code that you are trying to compile on a newer MA...

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Submitted

mxGetPropertyPtr & mxSetPropertySDC C-mex functions
Fast memory efficient alternative to API functions mxGetProperty & mxSetProperty.

how to solve 'Error using | Matrix dimensions must agree. ' ?
Maybe this line: while (Lia2_One_Three ~= zeros(length(Lia2_One_Three),1) | Lia2_Two_Three ~= zeros(length(Lia2_Two_Three),1)...

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Print from C file into Command window via MexFile
"However I would like to print directly from the c-file to Matlab Command Window. Is that possible?" Yes, that is what mexPrint...

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could anyone help me to solve the issue with respect to the code
The syntax of a for-loop is: for k=1:5 % your code here end

Subtracting matrices using a for loop
diff(your_data,1,3)

How can I see the filter function implementation code at MATLAB?
In general, if the function has an associated .m file then TMW is willing to show you that much. Also there may be information ...

If else problem for year
All of those if-elseif blocks make the code difficult to read, and difficult to debug as well. I would advise against that appr...

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Please how can I store all my matrix?
Maybe use a cell array: channel{i} = [importdata(location)]; Then at the end you can work with the individual matrices as chan...

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Fast Elementwise Matrix-Multiplications
The element-wise times operation in MATLAB is already multi-threaded. You are not going to beat it by writing your own low leve...

Defining velocity over particular time frame
You don't need a loop for the velocity. Assuming I understand that you want the velocity to be linear, you just need a vector t...

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Converting C++ bits packed int** to MATLAB unisgned char mxArray using mex?
Some issues: 1) The signature of mxCreateNumericArray according to the doc is: mxArray *mxCreateNumericArray(mwSize ndim, cons...

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Find an optimal solution for a linear system with two inequations
The way you have this problem posed, and assuming by "binary" you mean integer, it can be solved by simple inspection. The max ...

How to formulate the random matrix between real interval?
See the second example in the rand doc here, and use your endpoints of 0.10 and 0.50 instead of the example endpoints of -5 and ...

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Complex matrix inversion using LAPACK in MEX
I took your code and modified it to be a mex routine that takes a 2D double complex input (caution: no argument checking done!) ...

how to reshape this matrix
result = reshape(A.',2,[]).'

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Simulation of irrational numbers
The random number generators that come with MATLAB have very long periods. You can simply use them to form your ratio and it wi...

Printing out the element values in a mxDouble array (C++ script in Matab)
%d is a decimal integer format for use with short, int, long, etc. This doesn't work with floating point. Try e.g. %f or %g inst...

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Runge-Kutta function
Here is some code to get you started. It receives a string from the user for a derivative function of x and t and turns it into...