add 'fontsize()' function

NAMESPACE

@@ -72,6 +72,7 @@ export(convert_length)
 export(convert_x)
 export(convert_y)
 export(degree)
+export(fontsize)
 export(generateRandomBed)
 export(genomicDensity)
 export(getI)

NEWS

@@ -6,6 +6,7 @@ Changes in version 0.4.2
 * first column is refactorized in `circos.initialize()`
 * add names for CELL_META
 * add `labels.pos.adjust` in `circos.axis()`
+* add `fontsize()` function
 
 Changes in version 0.4.1
 ---------------------------------------------------------------------------

R/plot.R

@@ -1103,6 +1103,7 @@ circos.text = function(x, y, labels, sector.index = get.cell.meta.data("sector.i
 		}
 
 		m = polar2Cartesian(d)
+
 		for(i in seq_along(x)) {
 			text(m[i, 1], m[i, 2], labels = labels[i], srt = srt[i],
 				 cex = cex[i], col = col[i], font = font[i], adj = adj, ...)
@@ -1112,6 +1113,16 @@ circos.text = function(x, y, labels, sector.index = get.cell.meta.data("sector.i
     return(invisible(NULL))
 }
 
+# == title
+# Convert fontsize to cex
+#
+# == param
+# -x value for fontsize
+#
+fontsize = function(x) {
+	x/par("ps")
+}
+
 # == title
 # Mark the value as a degree value
 #

man/circos.axis.rd

@@ -38,7 +38,7 @@ circos.axis(h = "top", major.at = NULL, labels = TRUE, major.tick = TRUE,
   \item{lwd}{line width for ticks}
   \item{col}{color for the axes}
   \item{labels.col}{color for the labels}
-  \item{labels.pos.adjust}{whether to adjust the positions of the first label and the last label}
+  \item{labels.pos.adjust}{whether to adjust the positions of the first label and the last label. The value can be a vector of length two which correspond to the first label and the last label.}
 
 }
 \details{

man/fontsize.rd

@@ -0,0 +1,29 @@
+\name{fontsize}
+\alias{fontsize}
+\title{
+Convert fontsize to cex
+}
+\description{
+Convert fontsize to cex
+}
+\usage{
+fontsize(x)
+}
+\arguments{
+
+  \item{x}{value for fontsize}
+
+}
+\details{
+It just mark the value as a fontsize setting for \code{\link{circos.text}}
+
+}
+\author{
+Zuguang Gu <z.gu@dkfz.de>
+
+}
+\examples{
+# There is no example
+NULL
+
+}