I can't figure out how to add tick marks on both my X and Y axis. For example,
my X axis ranges from 0 to 1 and there are both a tick mark and a number label
at the X-axis values of 0.2,0.4,0.6. and 0.8. I want to add tick marks to the
figure at every 0.1 value. This will help a viewer determine the values on the
x axis.
I included all of my code. I apologize but it is very long. I am created a
contourplot figure that will be a jpg. I also included my notes after the #
sign so you can see what I am doing. Any help would be greatly appreciated.
jpeg(file="C:/Documents and Settings/Michael/My
Documents/Mike/amberjack/Reefs_Model/YPRlevel.jpg", width=8,height=8,
unit="in", res=300) #location of file and size
x<-contourplot(YPR~F*Length, data=yprplot2,
at=c(2.0,3.0,4.0,5.0,5.5,6.0,6.25,6.5,6.75,7.0,7.12,7.25,7.35,7.45,7.5),
ylim=c(25,40), xlim=c(0,1),xlab = "Fishing Mortality Rate", ylab = "Minimum
Size (inches)",
panel=function(...){ #This step adds the point for the current YPR value,
... means to leave the function open to bring in other functions
panel.levelplot(...)
grid.points(0.609,30,pch=8) #pch is the point character where 19 is a
closed circle
grid.points(0.333,30,pch=8) #pch is the point character where 19 is a
closed circle
grid.points(eumetric$F, eumetric$Length,pch=18,gp=gpar(col="black",
cex=.9))}) #add the eumetric line and make them points
#now add the text for the current ypr location
print(x) #this brings up the figure I already made
grid.text('Fcurrent',0.62,0.35,gp=gpar(col="black", cex=1)) #0.42 and 0.40 is
the location of the text on the figure
grid.text('Fmsy',0.38,0.35,gp=gpar(col="black", cex=1)) #0.42 and 0.40 is the
location of the text on the figure
dev.off() #it won't send the pdf until this is added. It turns off the pdf
function
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