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2010 Sep 21
1
Colorramp in Maptools, how to choose min and max values for the fg= argument
Hello, I am using maptools for plooting geographical data. The colour of the region indicates some region dependent value (population for example). I pass the colours of the regions to the plot.Map function by defining the foreground colour: jet.colors = colorRampPalette(c("#00007F", "blue", "#007FFF", "cyan", "#7FFF7F", "yellow", "#FF7F00", "red", "#7F0000")) n=100 cols <- jet.colors(n) Intervalls = cut(as.numeric(Vector),n, na.rm=TRUE) fgs <-cols[Intervalls] ## is there some option...
2010 Sep 24
2
why I could not reproduce the Mandelbrot plot demonstrated on R wiki
I am trying to reproduce the nice looking of Mandelbrot demonstrated by R wiki page by the following code: library(caTools) # external package providing write.gif function jet.colors = colorRampPalette(c("#00007F", "blue", "#007FFF", "cyan", "#7FFF7F", "yellow", "#FF7F00", "red", "#7F0000")) m = 600 # define size C = complex( real=rep(seq(-1.8,0.6, length.out=m), each=m ),...
2013 Feb 04
1
is it possible to create a trellis object with multiple colorkeys/z-scale axis?
...n&hl=en&key=0Aj zYZNH9Dw9qdENjREl2ZkVlcFA4MDN2S1h6Vi03ZUE&single=true&gid=0&output=csv",ssl. verifypeer=FALSE) test<-read.csv(textConnection(getdata),header=T) test$year<-as.factor(test$year) head(test) ##Custom color ramp jet.colors <- colorRampPalette(c("#00007F", "blue", "#007FFF", "cyan", "#7FFF7F", "yellow", "#FF7F00", "red", "#7F0000")) ##create trellis of tileplots betweenyear<-tileplot(index~month*-area|stock+year,test,col.regions=jet.colo rs...
2012 Dec 04
0
latticeExtra tileplot question - tiles are not all the same size, need help.
...9qdD NTN2djUEl3UVdhZ0t4ZXZrdHpPc2c&output=csv",ssl.verifypeer=FALSE) gsi_s<-read.csv(textConnection(gsi_csv),header=T) ##Custom color ramp...I didn't like the ones that are provided in the package, this is similar to jet colors in matlab jet.colors <- colorRampPalette(c("#00007F", "blue", "#007FFF", "cyan", "#7FFF7F", "yellow", "#FF7F00", "red", "#7F0000")) #Tileplots comparing how CWT recoveries from brood year 1974 -1977 and GSI data #from 2010 - 2011 represent the...
2006 Jan 09
0
need palette of topographic colors similar to topo.colors ()
I will second Roger's suggestion, colorRampPalette is a great function for creating your own palettes. For example, Matlab's jet palette (also available in fields package under peculiar name 'tim.colors') can be defined by: jet.colors = colorRampPalette(c("#00007F", "blue", "#007FFF", "cyan", "#7FFF7F", "yellow", "#FF7F00", "red", "#7F0000")) Other predefined functions for creating and managing color palettes that I know of, are: * R provides functions for creating pal...