warnerchang

Last seen: environ un mois ago | Active since 2021

Never be afraid to try something new

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How to plot a 3D disk with several holes quickly?
I used "patch" to plot a 3D disk with single central hole successfully, however, I do not know how to plot a 3D disk with severa...

environ 2 mois ago | 0 answers | 0

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Ｌｉｍｉｔ　ａｎｇｌｅ　ｉｎ　［－９０，９０］　ｄｅｇｒｅｅ
Aｓ　Ｉ　ｗａｓ　ｕｓｉｎｇ　ｏｄｅ４５　ｔｏ　ｓｏｌｖｅ　ＯＤＥｓ，　Ｉ　ｄｏ　ｎｏｔ　ｋｎｏｗ　ｔｏ　ｌｉｍｉｔ　ｔｈｅ　ｒｅｓｕｌｔ　ｉｎ　［－９０，９０］　ｄｅｇｒｅｅ．　Ａｎｙｏｎｅ　ｍａｙ　ｐｒｏｖｉｄｅ　ｓｏｍｅ　ｈｅｌｐ？

3 mois ago | 1 answer | 0

1

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Question

label is not at the center of axes
when I was plotting a 3D line, I tried to use xlabel/ylabel to make a axis label. However, I found these labels are not at the c...

4 mois ago | 1 answer | 0

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answer

Question

how can I change lighting using codes?
Now, I plot a figure, however, it is dark. And I use the button to change the lighting, I am wondering whether there exists a me...

4 mois ago | 1 answer | 0

1

answer

Question

How to define a colormap easily
I tried to define a colormap, however it is rather difficult, because I have to choose a value and then I see what the color it ...

4 mois ago | 2 answers | 0

2

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Question

what is the time complexity of function 'reshape'
anyone knows what is the time complexity of function 'reshape'?

4 mois ago | 2 answers | 0

2

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Question

why use limit function goes wrong
syms x f=(2/pi*atan(x))^x; limit(f,x,inf,'right') Prompt：Inconsistent limit direction. however，I tried to transform the f...

4 mois ago | 1 answer | 0

1

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Question

How to adjust the brightness of an image in YCbCr color space
anyone know how to adjust the brightness of an image in YCbCr color space?

4 mois ago | 1 answer | 0

1

answer

Question

Why two methods give different results, and which is correct?
I use ode15i and ode45 to solve an implicit function, however two methods give different results, which is correct? clear clc ...

4 mois ago | 1 answer | 0

1

answer

Question

why it will go wrong using 'cell'?
Recently, I ran two codes as follow: a={[],[]};a{1}(a{1}==3)=[]; % it will go wrong b=cell(1,2);b{1}(b{1}==3)=[];

5 mois ago | 1 answer | 2

1

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