Dear R list,
I am having some trouble drawing a bar-graph with two groups, both of
which are stacked.
A sample of my data (IUCN and national conservation status for marine
and terrestrial species) look like this:
Status
IUCN Terrestrial
IUCN Marine
National CS Terrestrial
National CS Marine
NE
168
69
16
69
LC
41
6
148
6
NT
5
4
7
4
VU
4
2
7
2
EN
4
2
4
2
CR
1
0
2
0
I would like to plot the conservation status for two groups (IUCN status
and national status), and for each of those groups I would like data for
the marine and terrestrial species to be stacked. I needed to transpose
the data to plot correctly, so my data in the code below look like this
(where the names for data in the columns are NE, LC, NT, VU, EN and CR;
and the matrix name is cs.not.log.bp):
IUCN.Terrestrial 168 41 5 4 4 1
IUCN.Marine 69 6 4 2 2 0
National.CS.Terrestrial 16 148 7 7 4 2
National.CS.Marine 69 6 4 2 2 0
I have tried the following code, but it does not work:
barplot(cs.not.log.bp[c(1:2),], xlab = "Conservation status", ylab =
"Number of species", col = c("grey90","grey80"),
names = cs.names, ylim = c(0,250), space = 2)
barplot(cs.not.log.bp[c(3:4),], col = c("grey60","grey30"), beside =
T,add = T,names.arg = NA)
legend("topright",c("IUCN Terrestrial","IUCN Marine","National CS
Terrestrial","National CS Marine"),
col = c("grey90","grey80","grey60","grey30"), pch = 15)
What happens is that some of the data in the second group stacks onto
the first group and then the remainder forms a second group. I would
like only "like" data to stack within a group.
There was one other similar post on the R-list
(http://r.789695.n4.nabble.com/barplot-question-td3670861.html ) where
the user had the same problem as I did, but it does not seem that this
was resolved.
Please let me know if you have any suggestions.
Thanks and best wishes,
Nicola
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