If you want a grid of hexagons, look at the examples in the my.symbols function
(TeachingDemos package), one of those gives a way to create the grid of
hexagons (not as efficient as the hexbin package, but allows you to set your
own colors).
For choosing colors you may want to look at the RColorBrewer package or do a
search for colorramp (several packages have functions for color ramps). The
findInterval function may also be of help if you do not want a 1 to 1 color
match.
Hope this helps,
--
Gregory (Greg) L. Snow Ph.D.
Statistical Data Center
Intermountain Healthcare
greg.s...@imail.org
801.408.8111
-Original Message-
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-
project.org] On Behalf Of Mestat
Sent: Thursday, August 12, 2010 2:20 PM
To: r-help@r-project.org
Subject: [R] Scatterplot - Overlap Frequency
Hi listers...
I am working o a scatterplot where I would like to plot the variables
according with another frequency variable.
Another friend here proposed this code...
x - rnorm(10)
y - rnorm(10)
ind - c(1,0,1,0,1,0,1,1,0,0)
plot(x, y, col = ind + 1, pch = 16) # 1 is black, 2 is red
But in my case I would like to identify with different colors according
with
a frequency variable.
x - rnorm(10)
y - rnorm(10)
ind - c(3,0,1,0,3,0,2,2,0,0)
I made some research and I would like to do something like the function
HEXBIN does:
source(http://bioconductor.org/biocLite.R;)
biocLite(hexbin)
library(hexbin)
x - rnorm(1000)
y - rnorm(1000)
bin-hexbin(x, y, xbins=50)
plot(bin, main=Hexagonal Binning)
But in my case I have another variable with the frequency and not high
density frequency according the two plotted variables...
Any suggestions, thanks...
Marcio
--
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