Thank you for the responses. The Lattice library is indeed useful for
producing the graphs in which I am interested, and I appreciate the
clarification between a function and the result of a function.
Ideally, I would like to be able to page through the graphs rather than
(or in addition to) having them displayed on the same page. Is there a
way to do this?
Danielle B. Johnston, Habitat Researcher
Colorado Division of Wildlife
-----Original Message-----
From: Phil Spector [mailto:spector at stat.berkeley.edu]
Sent: Tuesday, November 10, 2009 12:46 AM
To: Johnston, Danielle
Subject: Re: [R] creating multiple plots using a splitting factor
Danielle -
What you meant to say was
lapply(splitlist, function(x)hist(x$distance_cm, breaks=10))
but you might also be interested in trying
library(lattice)
histogram(~distance_cm|site,data=seeddist2)
- Phil Spector
Statistical Computing Facility
Department of Statistics
UC Berkeley
spector at stat.berkeley.edu
On Mon, 9 Nov 2009, Johnston, Danielle wrote:
Hello, I am new to R. I often collect data at multiple sites and need to create separate graphs (such as scatterplots or histograms) of
specific
variables for each site. I have tried to do this by splitting the
data
frame and then using lapply, but it seems that the graphing commands cannot be called as functions. Here is a sample of my data, called "seeddist2": site DaysSinceRelease distance_cm 10 GVM 1 17.8 11 GVM 1 17.8 12 GVM 1 14.0 13 GVM 1 14.0 14 GVM 1 14.9 15 GVM 1 25.4 16 WRR 1 25.4 17 WRR 1 35.0 18 WRR 1 45.0 19 WRR 1 55.0 20 WRR 1 60.0 Here is what I tried to get separate histograms of distance_cm by
site:
splitlist<- split(seeddist2, site) lapply(splitlist, hist(distance_cm, breaks=10)) I then get an error message saying that "match.fun" didn't find the function. Is there another way to produce multiple graphs at once? Thank you, Danielle B. Johnston, Habitat Researcher Colorado Division of Wildlife [[alternative HTML version deleted]]
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