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warnerchang


Last seen: 8 days 前 |  自 2021 起处于活动状态

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Never be afraid to try something new

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MATLAB
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How to make a graph (or part of a graph) of space from a given equation or inequality
Anything like this: phi=0:0.1:pi; theta=0:0.1:pi/2; [phi,theta]=meshgrid(phi,theta); x1=4.*sin(phi).*cos(theta); y1=4.*sin(...

7 months 前 | 0

提问


what happens behind "/"
[2:6]/[3:7] Ans = 0.8148 what happens behind this operation? Is there any algorithm?

11 months 前 | 2 个回答 | 0

2

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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？

2 years 前 | 1 个回答 | 0

1

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提问


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...

2 years 前 | 1 个回答 | 0

1

个回答

提问


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...

2 years 前 | 1 个回答 | 0

1

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提问


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 ...

2 years 前 | 2 个回答 | 0

2

个回答

提问


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

2 years 前 | 2 个回答 | 0

2

个回答

提问


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...

2 years 前 | 1 个回答 | 0

1

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提问


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?

2 years 前 | 1 个回答 | 0

1

个回答

提问


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 ...

2 years 前 | 1 个回答 | 0

1

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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)=[];

2 years 前 | 1 个回答 | 2

1

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