3D Polar Plot?

John Horrigan · Post by **John Horrigan** » Fri Nov 06, 2009 8:14 am

Good morning. I'm not sure if this has been asked and answered already.

I'd welcome any thoughts on how to plot this. I need to plot a celestial body trajectory with azimuth and altitude above the horizon, both in degrees, over time. I would picture the plot as hemispherical with azimuth on the horizontal scale, elevation on the vertical scale and time (GMT) on the concentric scale.

Any suggestions?

Thanks
-John

Post by **DPlotAdmin** » Fri Nov 06, 2009 8:52 am

DPlot doesn't work with polar coordinates in 3D, but you can translate those to cartesian coordinates easily enough if you have Excel or something similar with x = r*cos(azimuth) and y = r*sin(azimuth).

John Horrigan · Post by **John Horrigan** » Fri Nov 06, 2009 10:27 am

Thanks David. That's what I was resigned to do, I just thought it would be a lot prettier on the polar plot.

Thanks for getting back to me so quickly.

Cheers
-John