Community Profile # Abolfazl Chaman Motlagh

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how can I increase the size of an incremental vector filling the space with zeros
use ismember function. X = cumsum(randi(3,1,5)) Y = 1:X(end); Y = ismember(Y,X).*Y

6 dagen ago | 1

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How to determine whether a 3d point lies within a set of 3d points (a modeled room)
there is one easy way i can think, but that's not maybe very easy to write. you can devide the the while interior of set into s...

6 dagen ago | 0

I would like to sum a 2 dim array group by value in second column
there are a lot of ways to do this, here's a simple solution. i would recommend you to understand every line and run it line by ...

7 dagen ago | 0

How do I rotate a rectangular surface by a certain angle and center?
use the cordinate linear transformation. for this first subtract the center coordinate, rotate the coordinate, and finally shift...

7 dagen ago | 1

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How to solve a MATLAB script that will plot cos(x) for x values ranging from –pi to pi with argument to change line widths?
there is nothing wrong with the code or anything. all you should do is calling the function. you can either save the function in...

7 dagen ago | 1

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How to display a 2D square as a 3D cube
Use volshow function : thisSlice = dicomread('IMG-0004-00079.dcm'); thisSlice = double(thisSlice); thisSlice = (thisSlice-min...

3 maanden ago | 1

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Image Compression: How to use blockproc function with dct2 inside
you created DCT_Trans function for blockprop . it's a function which takes structure as input. if you pass structure S to it's i...

4 maanden ago | 0

Fitting multiple data sets to single curve in least square sense
the nlinfit function take a vector as second input y, because it's cost function for optimization and regression is based on sca...

4 maanden ago | 0

Why am I getting this error? Local function name must be different from the script name.
Name of your live script is project.mlx and name of your local function within it is also project which leads to error. try diff...

4 maanden ago | 0

How do I use the besselj function?
The function besselj(nu,x) is in fact two variable function as . you put v(i) and z(i) simultaneously with same index in argum...

4 maanden ago | 1

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Solved

Sums of cubes and squares of sums
Given the positive integers 1:n, can you: 1. Compute twice the sum of the cubes of those numbers. 2. Subtract the square...

4 maanden ago

Solved

Digital Neighbourhood
Given a natural number reorder its digits to create another number, closest to the given one. Examples: * 123 gives 132, ...

4 maanden ago

select ROI, threshold it and remove small objects - App designer
about the first problem: you overwrite the app.Icrop on app.I every time the slider changes. so after first time, it goes comp...

4 maanden ago | 1

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Asking for user input of numbers and letters.
if the plate (variable) could have both number and latters, deal with them like string. for getting input as string you need ext...

4 maanden ago | 1

plotting delta function in zero interpolation and decimation
the problem you are adressing is that n and m are 1x100 vector each. so the term (n-m*L) is 1x100 array. and it means h1 and h2 ...

4 maanden ago | 0

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Recursive Least Squares Estimation for Dynamic Systems in Real time
The first time rlsupdate is called the value of P,phi are set to eye(2) and 0. in the line 15 of code you have inverse of eye(1)...

4 maanden ago | 0

Can my code be written in a more efficient way?
if clearvars are not important, this is exactly equal to what you're doing: % Specify participant folder DotFolder = [Folder '...

4 maanden ago | 0

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Getting error in ode 45
you put ode45 and plot in your ode function. try this : (all in one script) [t,c] = ode45(@odefun1,[0 10],[1;0;0]); plot(t,c(:...

4 maanden ago | 0

All the possible path between two points without repetition
You can solve this problem with your data as a matrix, or as a graph. the matrix make it easier i guess: a traditional method w...

4 maanden ago | 1

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How to create a rectangle to locate a zooming area in a plot?
in first axes use function rectangle. y_min = min(Ly_orb.JacobiConstant(indexOfInterest)); % need indexofInterest for this y_m...

4 maanden ago | 1

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Write a MATLAB script to find the multiplies of the even numbers of any 𝑁 × 𝑀 matrix entered by the user?
Matrix = randi(100,7,5) multip = prod(Matrix(~rem(Matrix,2)))

4 maanden ago | 0

Find the optimal state and optimal control based on minimizing the performance index
your cost_function doesn't return a scalar. it should return one number for every input. it seems that x is a 1xn vector. and u...

4 maanden ago | 0

How to find area enclosed between two curves?
i don't think the code you include in your question content related to what you want. you have to vector, which are values of y...

4 maanden ago | 0

How can I use images which have different size for CNN?
except some special cases, there is a limitation for forwarding different size arrays toward a CNN. after images pass the convol...

4 maanden ago | 0

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Solve the partial differential equation using Crank-Nicolson method.
Hi. you forget to put index in x vector in line 70, in equation you calculate Ur. that's the error. Ur(i,j) = 0.5*erfc(0.5*(x(...

4 maanden ago | 0

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Convert Python code (loop) to MATLAB
it depend on what class you want folds be. (an array, a cell , ... ) for example if all elements in list have same lenght, here...

4 maanden ago | 0

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Why is the eigenvalue a column of zeroes
for the system , is technically a solution. you should search for non-trivial solution. for this you should create null space ...

4 maanden ago | 0

How to perform symbolic integration?
it doesn't seems your function has a clear close form primitive function. (or at least it is not easy for matlab symbolic toolbo...

4 maanden ago | 0

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How to keep GUI interface on top？
after the line that you open a file selector (uigetimagefile for example), use this: figure(FIGURE); it will bring up your GUI...

4 maanden ago | 0

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