Hello! I'd like to have a function to draw correct grid while using log axis with xyplot from lattice package. Right now I have the following code inside of my panel function: lim <- current.panel.limits() v <- latticeExtra:::logTicks(2^lim$xlim, loc=1) h <- latticeExtra:::logTicks(2^lim$ylim, loc=1) panel.abline(h=log2(h), v=log2(v), col="LightGray") Is there an easy way to get log base used for particular axis to transform data so I can write general purpose panel.grid.log? Mikhail
lattice: How to get log base for each axis inside panel function?
2 messages · Mikhail Titov, Deepayan Sarkar
On Mon, Aug 15, 2011 at 10:34 PM, Mikhail Titov <mlt at gmx.us> wrote:
Hello! I'd like to have a function to draw correct grid while using log axis with xyplot from lattice package. Right now I have the following code inside of my panel function: lim <- current.panel.limits() v <- latticeExtra:::logTicks(2^lim$xlim, loc=1) h <- latticeExtra:::logTicks(2^lim$ylim, loc=1) panel.abline(h=log2(h), v=log2(v), col="LightGray") Is there an easy way to get log base used for particular axis to transform data so I can write general purpose panel.grid.log?
No. The panel function gets no information regarding transformations done to the data before being passed to it. -Deepayan