# Alexandra Roxana

Last seen: 8개월 전 2021년부터 활동

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How to surf very small values keeping the same ratio?
I'm having a solution with very small values and I need to surf it; this is how a part of the solution looks like: I'm also u...

대략 1년 전 | 답변 수: 2 | 0

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Same aspect ratio for the z-axis in a surface plot
I have a surface plot and the x-axis and y-axis have the same ratio. I wish for the z-axis to have the same ratio. I have u...

대략 1년 전 | 답변 수: 1 | 0

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Surf a function with different values
I'm trying to surf a function f that takes 2 values: 1 if (x,y) is in A and 2 if (x,y) is in B. How can I do that? I attach also...

대략 1년 전 | 답변 수: 1 | 0

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Z must be a matrix, not a scalar or vector.
I want to have a 3D plot with a solution vector but I have the error that Z must be a matrix. a=0; b=4; c=0; d=6; g=1; dx...

1년 초과 전 | 답변 수: 1 | 0

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Different tick values on same axis
I want to use xticks using different steps. From a to a+g the step dxs, from a+g to b-g the step dxf and from b-g to b again the...

1년 초과 전 | 답변 수: 2 | 0

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How can I smooth a surf with many spikes?
I'm having problems to smooth a surf for a FEM program. Any help would be much appreciated. I'm leaving the code below: functio...

1년 초과 전 | 답변 수: 2 | 0

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How to smooth surf?
I'm having a surface plot with many spikes. I was wondering what I can do to smooth it. interp2 might be a solution, I guess, bu...

1년 초과 전 | 답변 수: 1 | 0

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Putting measurement unit and origin in plot
On the mesh grid, I would like on the x-axis in the far right end below the last value to put x1 and also the measurement unit, ...

1년 초과 전 | 답변 수: 1 | 0

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Change axis color on parts of the mesh
I would like this plot to have 2 colors on the same surface, meaning: blue between the x values of 1 and 2 and then between 9 an...

1년 초과 전 | 답변 수: 1 | 0

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Subscripted assignment dimension mismatch error
I'm having this error and unfortunately I can't seem to see what's wrong in it. Here are the dimension of the variables: ki=150...

2년 초과 전 | 답변 수: 1 | 0

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"Data dimensions must agree" Error
Hello! I'm having the same problem. I want to plot the results from the following code: clc clear all alpha = 2; L=50; dx =...

거의 3년 전 | 0

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Why do I get the error 'Subscript indices must either be real positive integers or logicals. ' ?
Hello, I'm trying to solve the heat equation in 2D using the finite difference method. I've also changed k=0 to k=1 and u(k+1)...

거의 3년 전 | 0