[R] Polar graph of time and tide

From: Alan E. Davis <lngndvs_at_gmail.com>
Date: Wed, 02 May 2007 00:04:50 +1000

I have been trying to visualize times of lowest tides, month by month.  I have tide predictions with times either in unix time or a text format, and heights in feet or meters. I had been able to derive the clock times of each prediction. I would now like to graph this data with points showing heights as "r" and times as "theta", from 0000 to 2355. There is a seasonal component: I am interested in displaying times of lowest tides in particular.

I am sure this is so simple as to burden those on the list; I however have spent two evenings trying to figure out how to use polar.plot, and I'm not sure that's the best way to do this. May I request some advice? The docs with polar.plot are not complete, I fear.

Thank you, begging for your indulgence,


Alan Davis, Kagman High School, Saipan  lngndvs_at_gmail.com

Every great advance in natural knowledge has involved the absolute
rejection of authority.  ----- Thomas H. Huxley

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Received on Tue 01 May 2007 - 22:03:53 GMT

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