From: Jim Lemon <bitwrit_at_ozemail.com.au>

Date: Thu 03 Mar 2005 - 09:56:19 EST

R-help@stat.math.ethz.ch mailing list

https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Sun Feb 27 06:58:11 2005

Date: Thu 03 Mar 2005 - 09:56:19 EST

Thanks for the answers - I should have been more specific as I had already
tried axTicks and pretty.

The function in question is gantt.chart() in the latest plotrix package (Thanks to Scott Waichler for the original code). I settled on axis.POSIXct as it seemed the most appropriate for this function, but couldn't find a way to get the positions of the ticks so that I could then draw grid lines along the months|days|hours. While the trick of copying the original function works, I wondered why the axis* functions don't return the tick positions as barplot returns the bar positions. Is there any reason not to return "z", or is it just historical?

Jim

R-help@stat.math.ethz.ch mailing list

https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Sun Feb 27 06:58:11 2005

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