[R] Legend problems

[Ross Darnell]

I have not been able to solve a problem trying to put a legend onto an
image.

After generating the image I try to add a legend with

legend(locator(1),c("0","0.2","0.4","0.6","0.8","1"),horiz=T,
        fill=c("white",rev(heat.colors(5))))

If I place the legend on top of the image the text and fill boxes are
shown, but unfortunately over the top of the image.

If I try to locate the legend somewhere else, in the top margin for
instance, the text (the legend) is displayed but not the fill boxes.

If I include the par option xpd, say

par(xpd=NA)

nothing changes. I thought this would stop this would allow the legend
to be printed inside the device but it doesn't seem to matter what xpd
value I use, the fill boxes do not appear anywhere except over the
image.

There must be another option that controls this. Can anyone help?

Regards
Ross Darnell


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