CODEWITHSUNDEEP
rcolors
TOPMAD
TOPMAD

Reputation: 631

color the grid in R

I want to color the picture I draw according to the value of z ,take example like this

x<-y<-seq(-2*pi, 2*pi, pi/15)
f<-function(x,y) sin(x)*sin(y)
z<-outer(x,y, f)
#contour(x,y,z,col="blue")
persp(x,y,z,theta=30, phi=30, expand=0.7,col=heat.colors(25))

if I want to color this picture in rainbow color or heat.colors the large the value of z, the dark the color , what should I do,how to control the color setenter image description here

thank you all

Upvotes: 2

Views: 960

Answers (1)

agstudy
agstudy

Reputation: 121608

In addition to the example in the help , you can use drape.plot from fields package which by default have colors assigned from a color bar based on the z values.It calls drape.color followed by persp and finally the legend strip is added with image.plot.

ncol <- 5
library(fields)
drape.plot( x,y,z, col=rainbow(nbcol))

enter image description here

Upvotes: 2

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