On 04/09/10 12:45, Moritz Beber wrote:
Hi everyone,
I have a problem with achieving the following: I have a plot that I'm
very happy with and I'd like to add some label text at certain
positions. I use rpy2 and ggplot2. My problem is basically that for
the geom_text I would like to specifiy a different aes_string so that
I can change the y positions.
Hi,
If the new //y/ an be derived for the information in your DataFrame /data/:
...+
ggplot2.geom_text(ggplot2.aes_string(y = "dynamic + 3"), colour="black") +
...
If not:
...+
ggplot2.geom_text(ggplot2.aes_string(y = "foo"), colour="black", data =
anotherdataframe) +
...
If that's not possible can I somehow push a complete layer to the
grDevice and then add a second layer on top?
There were recent additions to the documentation, some of them show how
to add grid viewports.
Check the last example at:
(rpy2-2.1)
http://rpy.sourceforge.net/rpy2/doc-2.1/html/graphics.html#package-grid
(rpy2-2.2)
http://rpy.sourceforge.net/rpy2/doc-2.2/html/graphics.html#package-grid
Laurent
For reference, here's the code that I use:
dataf = r_objects.DataFrame(data)
# plot
gp = ggplot2.ggplot(dataf)
plot_title = "Uniform Random Dynamic Value"
pp = gp +\
ggplot2.aes_string(x="xpos", y="dynamic", ymin="min", ymax="max",
colour="factor(scheme)", label="label") +\
ggplot2.geom_errorbar(position="dodge") +\
ggplot2.geom_line() +\
ggplot2.facet_grid(r_objects.Formula("mpos ~ .")) +\
ggplot2.scale_x_continuous("Motif") +\
ggplot2.scale_y_continuous("Dynamic Value") +\
ggplot2.geom_text(colour="black") +\
ggplot2.opts(title=plot_title)
pp.plot()
TIA,
Moritz
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