Message-ID: <48DB7241.1060405@bitwrit.com.au>
Date: 2008-09-25T11:13:05Z
From: Jim Lemon
Subject: Graph question
In-Reply-To: <1222262797.9580067cg.humphreys.1@research.gla.ac.uk>
Georgina Sarah Humphreys wrote:
> If I have a set of data comprising a list of numbers of eggs on mosquito guts that range from 1 to 157. How can I get R to draw a barchart of the distribution of the data (i.e. x axis= number of eggs on a gut, y axis=number of mosquitoes found with that number of eggs)? Data is listed below.
>
> Thanks,
> Georgina
>
> Number of eggs on each mosquito gut:
> [1] 1 1 1 1 4 2 1 12 12 1 2 1 12 6 11 33 33 94 17
> [20] 3 14 12 54 1 16 10 7 12 4 7 22 1 34 2 11 34 22 27
> [39] 4 1 27 1 1 157 1 7 31 3 6 24 6 7 23 10 54 3 12
> [58] 12 5 2 27 2 7 6 84 3 68 1 4 6 41 1 50 27 30 14
> [77] 3 1 1 1 30 1 68 1 7 1 10 5 11 4 19 1 7 9 33
> [96] 2 33 57 12 6 2 57 3 115 19 22 10 19 6 11 30 57 4
>
>
Hi Georgina,
Here's one way:
# first I created a vector named neggs with your data above
eggfreq<-freq(neggs)
library(plotrix)
barp(eggfreq[[1]],names.arg=names(eggfreq[[1]]),
xlab="Number of eggs",ylab="Frequency",
main="Eggs on mosquito guts")
Jim