Greetings!
I'm having an issue with the windrose produced by the windrose
function from the circular package. For our weather stations in North
Carolina I'm helping with a script which takes hourly wind speed and
direction data to create windroses for our end users. One of the
stations in the mountains frequently reaches wind speed of 40 to 60
mph and in storms can reach wind speed over 80 mph. This has brought
up an issue with the color ramp.
Currently the color ramp works one of two ways:
#1) Holding the pedal colors fixed:
incrspeeds = 2 # fills out the increments argument
pedalcolors =
c("darkblue","blue","royalblue","darkturquoise","forestgreen","green","yellowgreen","yellow4","yellow","orange","red","darkred","violetred","mediumorchid","purple")
#or 2) Making the pedal colors dynamic based on the increments and the
max wind speed.
incrspeeds = 2 # fills out the increments argument
breaks=seq(0,round(maxwind),incrspeeds) # maxwind is the maximum wind speed
numcolors=length(breaks)
if(numcolors>length(pedalcolors)){
pedalcolors=rev(rainbow(numcolors))
}
# In either case the result ends up in the wind rose function
rose=windrose(wr,breaks=NULL,bins=numpedals,increment=incrspeeds,main=NULL,fill.col=pedalcolors,plot.mids=FALSE,units="degrees",template="geographics",ticks=FALSE,osize=0.05,cir.ind
=0.05,cex=0.9,zero=NULL,rotation=NULL,right=FALSE,shrink=NULL,label.freq=TRUE,calm=c("0"),number.calm=TRUE)
The issue when there are really large wind speeds in the first case,
the windrose wraps the color ramp twice in both the legend and the
windrose itself, and then gives only white for the remaining bands of
each pedal. For the second case, when pedalcolors will have the same
number of colors as numcolors, the legend has the right color ramp,
but the pedals of the windrose don't have all the colors that are
passed to it. Say pedalcolors has 40 colors, which are included in
the legend, but the windrose only includes the first 16 colors in
pedalcolors.
Any thoughts as to why this might be happening in either case? Thanks!
Adrienne
--
Adrienne Wootten
Graduate Research Assistant
State Climate Office of North Carolina
Department of Marine, Earth and Atmospheric Sciences
North Carolina State University
An update on this particular problem I've been having. It seems that the number of pedals (the bins argument of the windrose command) is somehow effecting the number of colors that will be plotted. This makes no sense since it only controls the number of pedals in the windrose not the number of colors. A On Mon, Dec 12, 2011 at 4:20 PM, Adrienne Wootten <amwootte at ncsu.edu> wrote:> Greetings! > > I'm having an issue with the windrose produced by the windrose > function from the circular package. ?For our weather stations in North > Carolina I'm helping with a script which takes hourly wind speed and > direction data to create windroses for our end users. ?One of the > stations in the mountains frequently reaches wind speed of 40 to 60 > mph and in storms can reach wind speed over 80 mph. ?This has brought > up an issue with the color ramp. > > Currently the color ramp works one of two ways: > > #1) Holding the pedal colors fixed: > > incrspeeds = 2 # fills out the increments argument > pedalcolors = ?c("darkblue","blue","royalblue","darkturquoise","forestgreen","green","yellowgreen","yellow4","yellow","orange","red","darkred","violetred","mediumorchid","purple") > > #or 2) Making the pedal colors dynamic based on the increments and the > max wind speed. > > incrspeeds = 2 # fills out the increments argument > > breaks=seq(0,round(maxwind),incrspeeds) # maxwind is the maximum wind speed > numcolors=length(breaks) > > if(numcolors>length(pedalcolors)){ > pedalcolors=rev(rainbow(numcolors)) > } > > # In either case the result ends up in the wind rose function > > rose=windrose(wr,breaks=NULL,bins=numpedals,increment=incrspeeds,main=NULL,fill.col=pedalcolors,plot.mids=FALSE,units="degrees",template="geographics",ticks=FALSE,osize=0.05,cir.ind > =0.05,cex=0.9,zero=NULL,rotation=NULL,right=FALSE,shrink=NULL,label.freq=TRUE,calm=c("0"),number.calm=TRUE) > > The issue when there are really large wind speeds in the first case, > the windrose wraps the color ramp twice in both the legend and the > windrose itself, and then gives only white for the remaining bands of > each pedal. ?For the second case, when pedalcolors will have the same > number of colors as numcolors, the legend has the right color ramp, > but the pedals of the windrose don't have all the colors that are > passed to it. ?Say pedalcolors has 40 colors, which are included in > the legend, but the windrose only includes the first 16 colors in > pedalcolors. > > Any thoughts as to why this might be happening in either case? ?Thanks! > > Adrienne > > -- > Adrienne Wootten > Graduate Research Assistant > State Climate Office of North Carolina > Department of Marine, Earth and Atmospheric Sciences > North Carolina State University-- Adrienne Wootten Graduate Research Assistant State Climate Office of North Carolina Department of Marine, Earth and Atmospheric Sciences North Carolina State University
There is also a windrose (though not with that name) function in the openair package. -Don -- Don MacQueen Lawrence Livermore National Laboratory 7000 East Ave., L-627 Livermore, CA 94550 925-423-1062 On 12/12/11 1:20 PM, "Adrienne Wootten" <amwootte at ncsu.edu> wrote:>Greetings! > >I'm having an issue with the windrose produced by the windrose >function from the circular package. For our weather stations in North >Carolina I'm helping with a script which takes hourly wind speed and >direction data to create windroses for our end users. One of the >stations in the mountains frequently reaches wind speed of 40 to 60 >mph and in storms can reach wind speed over 80 mph. This has brought >up an issue with the color ramp. > >Currently the color ramp works one of two ways: > >#1) Holding the pedal colors fixed: > >incrspeeds = 2 # fills out the increments argument >pedalcolors = >c("darkblue","blue","royalblue","darkturquoise","forestgreen","green","yel >lowgreen","yellow4","yellow","orange","red","darkred","violetred","mediumo >rchid","purple") > >#or 2) Making the pedal colors dynamic based on the increments and the >max wind speed. > >incrspeeds = 2 # fills out the increments argument > >breaks=seq(0,round(maxwind),incrspeeds) # maxwind is the maximum wind >speed >numcolors=length(breaks) > >if(numcolors>length(pedalcolors)){ >pedalcolors=rev(rainbow(numcolors)) >} > ># In either case the result ends up in the wind rose function > >rose=windrose(wr,breaks=NULL,bins=numpedals,increment=incrspeeds,main=NULL >,fill.col=pedalcolors,plot.mids=FALSE,units="degrees",template="geographic >s",ticks=FALSE,osize=0.05,cir.ind >=0.05,cex=0.9,zero=NULL,rotation=NULL,right=FALSE,shrink=NULL,label.freq=T >RUE,calm=c("0"),number.calm=TRUE) > >The issue when there are really large wind speeds in the first case, >the windrose wraps the color ramp twice in both the legend and the >windrose itself, and then gives only white for the remaining bands of >each pedal. For the second case, when pedalcolors will have the same >number of colors as numcolors, the legend has the right color ramp, >but the pedals of the windrose don't have all the colors that are >passed to it. Say pedalcolors has 40 colors, which are included in >the legend, but the windrose only includes the first 16 colors in >pedalcolors. > >Any thoughts as to why this might be happening in either case? Thanks! > >Adrienne > >-- >Adrienne Wootten >Graduate Research Assistant >State Climate Office of North Carolina >Department of Marine, Earth and Atmospheric Sciences >North Carolina State University > >______________________________________________ >R-help at r-project.org mailing list >https://stat.ethz.ch/mailman/listinfo/r-help >PLEASE do read the posting guide >http://www.R-project.org/posting-guide.html >and provide commented, minimal, self-contained, reproducible code.
library(openair)
?windRose
--
Clint Bowman INTERNET: clint at ecy.wa.gov
Air Quality Modeler INTERNET: clint at math.utah.edu
Department of Ecology VOICE: (360) 407-6815
PO Box 47600 FAX: (360) 407-7534
Olympia, WA 98504-7600
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On Wed, 14 Dec 2011, MacQueen, Don wrote:
> There is also a windrose (though not with that name) function in the
> openair package.
> -Don
>
>