Dear list,
My query follows on from a question I posted a few days ago. I have the
following 2 sets of data:
wetMeans[1] 9.904762[2] 6.344828[3] 6.346154[4] 6.855769[5] 9.074324[6]
9.953988[7] 13.482966[8] 14.546053[9] 10.841584[10] 9.752033[11] 6.739336[12]
8.955056burnMeans[1] 0.06214286[2] 0.05396552[3] 0.04096154[4] 0.05302885[5]
0.05831081[6] 0.07392638[7] 0.29969940[8] 0.25596217[9] 0.09316832[10]
0.14441057[11] 0.13180095[12] 0.05348315
which I am trying to plot on the same graph. I wish to plot the variable
"wetMeans" as bars and overlay "burnMeans" as a line, using the same x-axis
(there are 12 observations in each set, corresponding to the months of the
year) but different y-axes. I have produced the following code which addresses
my previous issue (aligning the centre of each bar and the points of the line
plot); my problem now relates to the 2nd y-axis (which is being used for the
burnMeans data):
library(plotrix)
par(oma=c(1,1,1,1))par(las=1)
xvals <- barp(wetMeans, xlab="", ylab="", main="TEST", col="grey",
names.arg=c("Jan","Feb","Mar","Apr","May",
"Jun","Jul","Aug","Sep","Oct","Nov","Dec"), staxx=T, cylindrical=T, srt=45)
par(new=T)
plot(xvals$x,burnMeans, xaxt="n", yaxt="n", xlab="", ylab="", type="b", cex=1,
pch=16, lty=44, col="black", lwd=1.5)
axis(4, pretty(c(0,max(burnMeans)),n=4))
As you can see when you plot the data, the 2nd y-axis does not have an origin
at 0. From a quick inspection of the graph it appears that the scale of the 2nd
y-axis is such that the 0 marker would not fit on the grid. My question is
therefore if there is a method by which I can shift the line plot (burnMeans)
upwards, so that both plotted data sets have their respective y-axes beginning
at 0.
Many thanks in advance,Andy
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