Community Profile # geometry geometry

Last seen: 1 month ago Active since 2017

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Deblurring image with deconvolution
I have a picture 'image.jpg' that is blurred with function sin(x+y). How can I deblur it with deconvolution?

4 years ago | 0 answers | 0

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Question

How can I clear the noise from a picture
Assume that a picture is multiplied by the noise sin(Ax+By). how can I clear the noise using deconvolution?

4 years ago | 1 answer | 0

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Where is the problem with my code. it never ends !!
What is the problem with the following code? It calculates the exponential coefficients fo fourier series of periodic functio...

4 years ago | 1 answer | 0

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Question

creating function matlab code
How can write a function DFT(x) (in terms of jw) such that for the given discrete signal x[n]: <</matlabcentral/answers/uploa...

4 years ago | 0 answers | 0

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Question

Error: Conversion to logical from sym is not possible.
Why I get the error in title? syms x h myconv myconv=0; h=0; x(n)=(1/2^(-n+1))*(heaviside(n+2)-heaviside(n-2)); ...

4 years ago | 0 answers | 0

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Question

why I get error using stem?
I tried this code to stem the convolution of two discrete time signals x and h without using conv function. but I get error e...

4 years ago | 0 answers | 0

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why I'm getting error with symsum?
I have tried this code to calculate energy and power of discrete time functions. but I get errors. how can I fix it? syms ...

4 years ago | 0 answers | 0

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Question

Calculating energy and power of a signal
I tried this code to calculate energy and power of the input function f(x). but I get error. how can I fix it? syms x y z e...

4 years ago | 3 answers | 0

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Question

why is my plot shows nothing?
why is my plot shows nothing? syms w w=-1*10*pi:0.005:10*pi; plot(w,sqrt(w.^2+w.^6)/(1+w.^4),'b');

4 years ago | 3 answers | 0

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Question

how can I write a function y(n) in terms of function x(n)?
I run this code and I get error. (the error is for function y which contains function x in its defenition). how can i fix this e...

4 years ago | 2 answers | 0

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Question

Showing data values on markers in figure
When I run: x=0.4:3.6; x1=[.4 1 1.4 2 2.4 3 3.6]; y1=[17.25 33.6 36.72 37.2 36.8 36.75 32.7]; plot(x1,y1,'Marker','s...

5 years ago | 1 answer | 1

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Question

Plotting dirac delta function's spectrum
I used the following code to plot the spectrum of some functions. but it doesn't work for the function dirac(t-t0) at t0=0. How ...

5 years ago | 1 answer | 0

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Question

Error using plot ; spectrum of function
Why I get error using the following code? syms t w; syms g h; g=fourier(exp(-1*(t^2))); h=abs(g); w=-10.1:10.1; plot...

5 years ago | 2 answers | 0

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Question

Polar : ERROR: Data must be numeric, datetime, duration or an array convertible to double.
In this code I want to enter the function f(r) in terms of 'r' and then plot its figure with polarplot and calculate grad(f(r)) ...

5 years ago | 1 answer | 0

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Question

Error: The size of X must match the size of U or the number of columns of U.
What's the problem with this code? when I run it the following Error occurs: Error using quiver The size of X must match ...

5 years ago | 2 answers | 0

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Question

How to use gradient?
what is the problem with the following code? f=input('enter function: ','s') [DX,DY] = -gradient(f); f = str2func(['@...

5 years ago | 2 answers | 0

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Question

Error using contour: Z must be at least a 2x2 matrix.
What's the problem with the following code? f=input('enter function: ','s'); f = str2func(['@(x,y)' vectorize(f)]); [...

5 years ago | 1 answer | 0