> R.version
_
platform i486-pc-linux-gnu
arch i486
os linux-gnu
system i486, linux-gnu
status
major 2
minor 8.1
year 2008
month 12
day 22
svn rev 47281
language R
version.string R version 2.8.1 (2008-12-22)
> packageDescription('circular',fields='Version')
[1] "0.3-8"
Computing a table and plotting a windrose with windrose I have odd (to me) results:
in the table data referred to some wind direction are missing
the frequency plotted in the windrose are different from those indicated in the table
some wind magnitudes are missing in the table
wdir <- rep(seq(0,135,45),10) # 4 directions 0,45,90,135 degrees
wmag <- rep(c(10,5,2,1),10) # constant mag for each direction: 10,5,2,1
t <- windrose(circular(wdir,units='degrees',template='geographics'),wmag,increment=1)
> t$table
[0, 30) [30, 60) [60, 90) [90, 120) [120, 150) [150, 180) [180, 210)
(0,1] 0.000 0.000 0 0 0 0 0
(1,2] 0.333 0.000 0 0 0 0 0
(2,3] 0.000 0.000 0 0 0 0 0
(3,4] 0.000 0.000 0 0 0 0 0
(4,5] 0.000 0.333 0 0 0 0 0
[210, 240) [240, 270) [270, 300) [300, 330) [330, 360)
(0,1] 0 0 0 0.333 0
(1,2] 0 0 0 0.000 0
(2,3] 0 0 0 0.000 0
(3,4] 0 0 0 0.000 0
(4,5] 0 0 0 0.000 0
The problems I can see are:
90 and 135 winds are missing
frequency for magnitude are not assigned as I was expected (mags are up to 10)
Frequency in windrose are .6 for each one of the three non-empty column
What am I doing wrong in here?
Thanks,
Alessandro
~~~~~~~~~~~~~~~~~~
Alessandro Bigi
E-mail:
a.bigi@...
Tel: +44 (0)12141 47297
Location: Public Health 209
~~~~~~~~~~~~~~~~~~
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