How can I plot 3D polar plot in MATLAB

I have three values, azimuth, elevation and corresponding data points. is it possible to plot 3D polar plot using this three values. and 1 want to show the third value in colour. I am looking forward to hear your suggestions. A sample data is attaching herewith

Thanking You,

Answer 1

[Star Strider]

There may be File Exchange contributions for 3D polar plots. It is possible to use the sph2cart function to plot your data in 3D, however in Cartesian coordinates, so losing the angle data in the plot.

A 2D polar plot with the values in scaled colour is not difficult to code using the polarscatter function (in R2016b and later):

D = load('data.txt');
Az = D(:,1);
El = D(:,2);
Rd = D(:,3);

cn = ceil(max(El));                                             % Number Of Colors
cm = colormap(jet(cn));

figure(2)
polarscatter(Az*pi/180, Rd, [], cm(fix(El),:), 'filled')
grid on

Tbis colours the points by the value of ‘El’. Here, since the maximum ‘El’ value defines 21 colours, no scaling of it is needed. In other situations (very high or very low maximum values), scaling would be necessary to get adequate colour definition.

[john pappachen]

Thanks

[Star Strider]

My pleasure.

If my Answer helps you solve your problem, please Accept it!

[Freddy Ngankam]

hello,

please i have a 48x18 Matrix. the first columb ist the azimuth, the second ist the elongation and the rest of the columbs are my data. i want to plot each datacolum a 3d-plot but i am trying it since two week without succes

can you helpme please ( i am knew in matlab)

thank you

[Alexi]

Hi thanks for your reply, How can we print the magnitudes of the values ​​of the points on the points?

[Star Strider]

@Alexi — Use the text function. See the documentation section on Input Arguments.

@Freddy Ngankam — You would likely need to use the pol2cart function, and then plot them in Cartesian coordinates.

.

Answer 2

[Juan Esteban Villegas]

Hey I made this function to plot a scatter 3d plot, it is rather raw but it does the job maybe you can modify it to make it better.

https://www.mathworks.com/matlabcentral/fileexchange/92910-polarscatter3

Best

Juan

[hema vardhan patti]

Hey, I really need the syntax for this plot. Will help me a lot in my thesis

[Juan Esteban Villegas]

Hey Hema, you can use something like:

theta = linspace(0,10*pi,401);

phi = linspace(-pi/2,pi/2,401);

rho = linspace(1,1,401);

polarscatter3(theta,phi,rho,'x','r','LineWidth',0.5)

[hema vardhan patti]

Thank you for responding Juan, But how to get from a table of values or excel.