rplot3d
cex parameter in the plot3D library
I cannot find any indication on how to use the cex parameter when plotting image2D. It seems the cex parameter does not have any effect. I am able to change the font size of the legend and the axis with the specific cex arguments, but I cannot change the plot title font size.
Is there a way to change font size over the plot with just one parameter? And how is the title font size changed?
Solution
You are right, I did not find it in documentation as well.
To change title font size you can set the parameter cex.main in image2D. See below:
library(plot3D)
nr <- nrow(volcano)
nc <- ncol(volcano)
image2D(volcano, x = 1:nr, y = 1:nc, lighting = TRUE,
main = "volcano", clab = "height, m", cex.main = 3)
To scale up the font size globally you can change global parameter cex.
Please see below:
library(plot3D)
nr <- nrow(volcano)
nc <- ncol(volcano)
prev <- par(cex = 1.7)
image2D(volcano, x = 1:nr, y = 1:nc, lighting = TRUE,
main = "volcano", clab = "height, m")
par(prev)
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