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Last seen: 1 giorno fa |  Attivo dal 2021

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Domanda


set the tick format of y axis
How can I set the format of the ticks of the y axis? I want to change the upper one to the lower one, as the former is too wid...

circa 2 mesi fa | 4 risposte | 0

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Domanda


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...

5 mesi fa | 1 risposta | 0

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Domanda


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...

5 mesi fa | 1 risposta | 0

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Domanda


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, ...

6 mesi fa | 2 risposte | 0

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Domanda


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...

6 mesi fa | 2 risposte | 0

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Domanda


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?...

6 mesi fa | 1 risposta | 0

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Domanda


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?

7 mesi fa | 1 risposta | 0

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Domanda


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...

7 mesi fa | 1 risposta | 0

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Domanda


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...

7 mesi fa | 1 risposta | 0

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Domanda


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...

8 mesi fa | 0 risposte | 0

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Domanda


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 ...

8 mesi fa | 0 risposte | 0

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Domanda


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 ...

8 mesi fa | 2 risposte | 0

2

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Domanda


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 ...

12 mesi fa | 0 risposte | 0

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Domanda


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...

circa 3 anni fa | 2 risposte | 0

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