I am attempting to use the Bayesian kriging function in geoR by Ribeiro and I am encountering a problem with the "image" command.
The program is not responsive to the "ylim" command, such that:


image(temp.bayes,loc=pred.grid,col=rainbow(25, start=.6, end=.1),xlab="Longitude",ylab="Latitude", ylim=c(-30,30),borders=NULL)
legend.krige(y.leg=c(-150,-140), x.leg=c(-150,150), values=temp.bayes$predictive$mean.simulations,col=rainbow(25, start=.6, end=.1))
map('worldHires', ylim=c(-30,30), add=TRUE,interior=FALSE)
title(expression(paste("a.)",Delta, "T", degree,C)))


fails to generate a figure with the y-axis from 30 degrees south to 30 degrees north. Interestingly, the image command is responsive to the "xlim"
command


image(temp.bayes,loc=pred.grid,col=rainbow(25, start=.6, end=.1),xlab="Longitude",ylab="Latitude", xlim=c(-30,30),borders=NULL)

but this changes the scale of both the y and x axes. I have tried exporting the gridded data to the base R package to use the standard "image" command; however the data are in a very cumbersome format. Please help if you have encountered such a problem.

Thank you,
Ashley

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