editing a residue cross correlation x axis spacing.

[Former user]

Hi,

I'm plotting a cross-correlation analysis using:

plot(cij, resno=pdb, contour=FALSE, col.regions=bwr.colors(200), at=seq(-1,1,by=0.01) )

but would like the spacing between residues on the x-axis to be 20 instead of 50 aa.

What would be the easiest way to accomplish that?

Thanks,

Tarsis

[Xinqiu Yao]

Hi,

‌

You can assign the plot to an object and modify the object directly to change axis ticks. For example,

p <- plot(cij, resno=pdb, contour=FALSE, col.regions=bwr.colors(200), at=seq(-1,1,by=0.01) )

at <- pretty(1:ncol(cij), n=10)
at[1] <- 1
at <- at[at <= ncol(cij)]
resno <- pdb$atom$resno[pdb$calpha]
labels <- resno[at]

p$x.scales$at <- at
p$y.scales$at <- at
p$x.scales$labels <- labels
p$y.scales$labels <- labels

p

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