How to plot polar curve in both upper and lower half region?

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Rajiv Shah 2020-10-22

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评论： Rajiv Shah 2020-10-23

Actually, my results data shows that pressure data generated is positive from 0 to 180 and it is negative in 180 to 360. But when i draw the polar graph for theta against pressure, i find the graph only in upper half i.e. from 0 to 180 but not in lower half. I want the graph which should be in both upper and lower half as it is reflected in result data.

I would appreciate your generous help.

Thanks....

-Rajiv Shah

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Answer 1

Sudhakar Shinde 2020-10-22

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编辑：Sudhakar Shinde 2020-10-22

Change Polar Axes Limits

By default, negative values of the radius are plotted as positive values in the polar plot. Use rlim to adjust the r-axis limit to include negative values.

https://www.mathworks.com/help/matlab/creating_plots/plotting-in-polar-coordinates.html

see example:

rmin = min(rho);

rmax = max(rho);

rlim([rmin rmax])

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Rajiv Shah 2020-10-23

Thank you for your response but my version of matlab gives error message for rlim command as Undefined function or method 'rlim' for input arguments of type 'double'. I am using Matlab 7.

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