windrose (circular package) error in table (PR#8341)
On 11/21/2005 8:50 PM, Allyson.Williams at dpi.qld.gov.au wrote:
Full_Name: Allyson Williams Version: 2.1.1 OS: Windows XP Submission from: (NULL) (203.25.1.208) I'm using the 'Circular' package to plot windroses. I think the output table (see out2$table below) is incorrect when using different rotations. More precisely, when a rotation is used for the plot, the output table stuffs up.
Please send bug reports about contributed packages to the maintainer, Claudio Agostinelli <claudio at unive.it>. Duncan Murdoch
This example is from the code in the help notes, although the input data (dir, mag) are changed):
dir <- c(1:50,1:50) mag <- c(1:100) sample <- data.frame(dir=circular(dir,units="degrees"), mag=mag) par(mfrow=c(2,2)) res <- windrose(sample) ## we join two pedals and keep the same shrink (scale of the plot) breaks <- seq(0, 2 * pi, by = pi/6) breaks <- breaks[-2] out1<-windrose(sample, breaks=breaks, increment=50,main="The same but with two
pedals joined", shrink=res$shrink)
# # change the rotation sample <- data.frame(dir=circular(dir, units="degrees", rotation="clock"),
mag=mag)
out2<-windrose(sample, breaks=breaks,increment=50, main="Change the rotation",
shrink=res$shrink)
## use geographics template sample <- data.frame(dir=circular(dir, units="degrees",
template="geographics"), mag=mag)
out3<-windrose(sample, breaks=breaks, increment=50,main="Use the template
'geographics'", shrink=res$shrink) THESE are the output tables that seem to be incorrect (I'm sorry they're not clearer):
out1$table
[0, 60) [60, 90) [90, 120) [120, 150) [150, 180) [180, 210) [210,
240) [240, 270) [270, 300) [300, 330) [330, 360)
From 0 to 50 0.5 0 0 0 0 0
0 0 0 0 0
From 50 to 100 0.5 0 0 0 0 0
0 0 0 0 0
out2$table
[0, 60) [60, 90) [90, 120) [120, 150) [150, 180) [180, 210) [210,
240) [240, 270) [270, 300) [300, 330) [330, 360)
From 0 to 50 0 0 0 0 0 0
0 0 0 0 0.5
From 50 to 100 0 0 0 0 0 0
0 0 0 0 0.5
out3$table
[0, 60) [60, 90) [90, 120) [120, 150) [150, 180) [180, 210) [210,
240) [240, 270) [270, 300) [300, 330) [330, 360)
From 0 to 50 0 0.5 0 0 0 0
0 0 0 0 0
From 50 to 100 0 0.5 0 0 0 0
0 0 0 0 0 out1$table is correct. The data is all between 0-60degrees. out2$table (changed rotation) is incorrect. The data are listed as being between 330-360degrees. Out3$table (geographic rotation) is incorrect. The data are listed as being between 60-90degrees. Regardless of the rotation, the data should always be between 0-60degrees! The problem only seems to occur when 'rotating' the plot.
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