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min lee


Last seen: ungefär en månad ago |  Active since 2021

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setting the yticklabels with $10^{-2}$ appearing at the top
I want the y axis to be labelled as But I actually got The problem is that the ticklabels are too wide. How can I make it...

ungefär en månad ago | 1 answer | 0

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answer

Question


is matlab automatically updating xlim and ylim?
The code to put the text at the wanted location is as follows: XL=xlim; YL=ylim % str = strcat("E_{ex}=",num2str(exac...

ungefär en månad ago | 1 answer | 0

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answer

Question


How to make sure that the horizontal axes of two figures align?
I have two figures, which I want to put side by side in my thesis. These two figures have different x and y labels and ticks, ...

ungefär en månad ago | 2 answers | 0

2

answers

Question


what kind of plot is useful for comparing two matrices?
I have two 5*5 matrices. I want to use a plot to show that they are close element-wise. What plot is suitable? I think the p...

ungefär en månad ago | 2 answers | 0

2

answers

Question


eigs with complex hermitian matrix, should I set opts.issym to 1?
If the matrix is real and symmetric, I guess it is safe to set opts.issym = 1. But what if the matrix is complex and hermitian?...

2 månader ago | 1 answer | 0

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answer

Question


what does the vertical line in the editor window mean?
I notice that in the editor window, there is a vertical ruler. What is the purpose of this vertical line?

3 månader ago | 1 answer | 0

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Question


function handle with input parameters
I need to invoke the 'eigs' function to calculate the lowest eigenvalue of a hermitian matrix, which I do not construct explicit...

3 månader ago | 1 answer | 0

1

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Question


Is it possible to just set the lower limit of the y-axis?
I just want to set the lower limit of the y-axis to zero. But with 'ylim', I have to also set the upper limit, which I do no...

3 månader ago | 1 answer | 0

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answer

Question


what is the extra data in a dictionary?
When a matrix is converted to a dictionary, the memory assumption increases as demonstrated below. What is the extra data in a d...

4 månader ago | 0 answers | 0

0

answers

Question


why is dictionary introduced so later in matlab?
I have been using matlab since 2006, but I have never heard of the dictionary structure untile recently when I started learning ...

4 månader ago | 0 answers | 0

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answers

Question


using global variables to avoid passing by value
It is often heard that using global variables is a bad practice. However, personally, I often declare some variable as global ...

4 månader ago | 2 answers | 0

2

answers

Question


Matlab should introduce functions like ‘’abs2‘’
Now matlab has only the function 'abs'. In many case, I need not abs but abs2. The function abs2 is a inbuilt function in ...

8 månader ago | 0 answers | 0

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Question


use of svds with function handles
I want to do singular value decomposition of a matrix A, which is very big but simply structured. Specifically, it is a rank-2 m...

mer än 2 år ago | 2 answers | 0

2

answers