Mark Multiple minimum and maximum value in polarplot

Question

Arief Yoga Randytama 2021-7-16

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/879928-mark-multiple-minimum-and-maximum-value-in-polarplot

评论： Arief Yoga Randytama 2021-7-16

Hi, I have created the code to plot a data in polar coordinates as such:

theta=deg2rad(0:30:330);
r=[2.14 2.29 2.14 2.00 2.14 2.29 2.14 2.00 2.00 2.57 2.14 2.00];
polarplot(theta([1:end 1]),r([1:end 1]))
ax=gca
ax.ThetaZeroLocation='right'
ax.ThetaDir='counterclockwise'
title('RSR Value of Maximum Water Depth')

Now i want to mark all 3 minimum value of r (2.00) with a red circle, and also the maximum value with a green star. How can i do it? Thanks

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

KSSV 2021-7-16

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/879928-mark-multiple-minimum-and-maximum-value-in-polarplot#answer_748068

在 MATLAB Online 中打开

theta=deg2rad(0:30:330);

r=[2.14 2.29 2.14 2.00 2.14 2.29 2.14 2.00 2.00 2.57 2.14 2.00];

polarplot(theta([1:end 1]),r([1:end 1])) ;

[val0,idx0] = min(r) ;

[val1,idx1] = max(r) ;

hold on

polarplot(theta(idx0),val0,'*r') ;

polarplot(theta(idx1),val1,'*k') ;

ax=gca ;

ax.ThetaZeroLocation='right' ;

ax.ThetaDir='counterclockwise' ;

title('RSR Value of Maximum Water Depth')

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

Arief Yoga Randytama 2021-7-16

Thanks! this works just fine, but i noticed that val0 and idx0 only reads one minimum value of r. Meanwhile, what i intended is mark all the minimum r value, which belongs to 90, 210, and 240 degree. Can it be done? Thanks again.

请先登录，再进行评论。