Monthly Archive for February, 2008

Published on February 12, 2008 in utilities. 0 Comments Tags: converting, eps, pdf, svg.

Sometimes you want to be able to tweak a plot in R that was saved as a PDF or an EPS.

Use this to convert an eps into svg for editing in Inkscape:

pstoedit -f plot-svg input.eps output.svg

Then save the SVG in Inkscape as a “Plain SVG”, and use

convert input.svg output.pdf

Published on February 4, 2008 in plotting and R. 0 Comments Tags: ggplot, grayscale, parameters, R.

Try

?ggopt

to see the different ways of adjusting plot background, axes, aspect ratio, border colors, and strip labels.

This acts on the currently active plot.

grid.gedit('label', gp=gpar(fontsize=16))

Or just change one type of label (here, the yaxis).

grid.gedit(gPath("yaxis", "labels"), gp=gpar(col="red"))

The newest version of ggplot2 (0.5.7) allows you to have black and white themes.

pl = ggplot(diamonds)+aes(x=carat, y=price) +
    geom_point()+theme_bw
pl

I like to tweak the theme_bw a little before using it as above:

theme_bw$grid.colour = "grey80"
theme_bw$border.colour = "gray70"

pl$strip.gp = gpar(fill="grey90")
pl$strip.txt.gp = gpar(col="black", fontsize=16)
pl

pl+scale_colour_grey(end=0.7,start=0,name='')
pl

Published on February 4, 2008 in R. 0 Comments Tags: dataframe, merge, R.

Quick answer: use merge.

You can also use rbind, but it will only be useful for simple cases.