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(...
11 months ago | 0
Question
what happens behind "/"
[2:6]/[3:7] Ans = 0.8148 what happens behind this operation? Is there any algorithm?
1 year ago | 2 answers | 0
2
answersQuestion
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 years ago | 1 answer | 0
1
answerQuestion
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...
3 years ago | 1 answer | 0
1
answerQuestion
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...
3 years ago | 1 answer | 0
1
answerQuestion
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 ...
3 years ago | 2 answers | 0
2
answersQuestion
what is the time complexity of function 'reshape'
anyone knows what is the time complexity of function 'reshape'?
3 years ago | 2 answers | 0
2
answersQuestion
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...
3 years ago | 1 answer | 0
1
answerQuestion
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?
3 years ago | 1 answer | 0
1
answerQuestion
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 ...
3 years ago | 1 answer | 0
1
answerQuestion
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)=[];
3 years ago | 1 answer | 2
