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# Abolfazl Chaman Motlagh

Last seen: Today Active since 2020

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Sum of odd numbers in a matrix
Find the sum of all the odd numbers in a matrix. Example x = [2 3 5 7 1 4 11] y = 27

1 month ago

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Back to basics 7 - Equal NaNs
Covering some basic topics I haven't seen elsewhere on Cody. Given 2 input variables, output true if they are equal, false ot...

1 month ago

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area of an annulus
Given the diameter d of the inner circle of the annulus. Given length z of a chord of the outer circle of the annulus. This chor...

1 month ago

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Distance walked 3D
suppose you go from x-y-z coordinates [3,4,2] to [0,0,2] to [0,1,2] to [1,1,2], to [1,1,20] then you walked 25 units of distance...

1 month ago

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03 - Matrix Variables 6
Make _fMat_ be a 5x3 matrix of random integers with values from -3 to 3 (Hint: use *randi*)

1 month ago

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Number of 1s in a binary string
Find the number of 1s in the given binary string. Example. If the input string is '1100101', the output is 4. If the input stri...

1 month ago

Calling function from another .m file
type this in your script: function A = stringorder(A) [M,N]=size(A); for i = 1:M-1 for j = 1:M-1 curr = A(j); ...

3 months ago | 0

Resnet50 pretrained network?
i think you have connection issue to Matlab add-on Explorer. if no solution works, you can download the model from matlab github...

3 months ago | 0

Issues with contour plot of f(x, y) = x/y.
those lines are not y=0. those are continues of the contour lines around the region for your given values. near y=0, z goes to +...

3 months ago | 1

Gauss- Seidel Error tolerance
you have an unclear statement in while.after first iteration the err is 3x1 vector and tol is a scalar. change the statement to...

3 months ago | 1

Finding the minimum cost of a matrix
If i get that right, you have an assignment task. so you want to solve this : your constraint should be : which i repres...

3 months ago | 1

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Get path from running app
if you mean path of location which the app comes up, can't you just use pwd? i use it before in StartupFcn. and it work correct...

3 months ago | 0

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How to use dlgradient for computing second derivative?

3 months ago | 0

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What is the UB and LB in the following solver based approch optimisation question
your upper bound is infinity , lower bound is zeros: f = [2;3;2;-1;1]; Aeq = [3 -3 4 2 -1;1 1 1 3 1]; beq = [0;2]; lb = zer...

3 months ago | 0

Vectorized parametric step function
it is not about your code. i test it here : X = 0.05:0.05:1-0.05 X(12) X(12)<0.6 this result is wrong. because : X(12) - ...

3 months ago | 0

Converting 1-D indexed array to 2-D/3-D matrix
Your incresing order are usual for 3-D array. (X,Y,Z). just reshape the array, it would work: data = reshape(data,[2301 1201 24...

3 months ago | 0

repeated value of a vector
a naive way is to use a loop for every index: x = [1,5,15,2]; % for example num = 2; % number of repeat you want index=1; f...

3 months ago | 0

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running for loop gives error " Row index exceeds table dimentions "
your minrange and maxrange now are vecotors with two value.if you want to put it in for loop, in data you should mention wich co...

3 months ago | 1

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I am in basic level in MATLAB , In the code i got the error as unrecoganised function or variable
you use a function which is not introduced yet. For every function, Create a New script, copy your function in it, save it with...

3 months ago | 0

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Too Many Zeros, Dump Them!
Sometimes when I create a matrix, I use this syntax: a = zeros(1000,1000); But when the function ends, I find that I don'...

3 months ago

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frame of the matrix
Given the matrix M, return M without the external frame.

3 months ago

I want to know the difference between 1 and 1.0000
first of all log10(1) should be zero! but beside this, i think you are reporting your workspace wich is produced after some c...

3 months ago | 0

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regarding passing input as images to a function from two different folders
i think it is easier for you to use imagedatastore. use : images_left = imageDatastore('left_view_folder'); images_right = i...

3 months ago | 0

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subtract central cross
Given an n-by-n square matrix, where n is an odd number, return the matrix without the central row and the central column.

3 months ago

I want to Calculate how much Time my code take to simulate. What changes in the code should be considered
use : tic; %% Your Code toc % or Time = toc; the output of calling toc, return how much time it takes from tic, to toc.

3 months ago | 0

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How to form a function using 'for loop' without 'sym' command
Assuming you want nA be function of phi, you can use symsum for summuation : m = 150; Aos = 40; syms phi k nAi =@(phi) sym...

3 months ago | 0

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Given a matrix, swap the 2nd & 3rd columns
If a = [1 2 3 4; 1 2 3 4; 1 2 3 4; 1 2 3 4]; then the result is ans = 1 3 2 4 1 3 2...

3 months ago

How to solve single variable nonlinear trigonometric function?
maybe you forgot to use "d" in trigonometric functions. quick answer without optimizing the code: m = 0.7:0.01:1 ; b1 = 34.65...

3 months ago | 0

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