Displaying 3 results from an estimated 3 matches for "l_raster".
2013 Sep 16
1
Patch: fix segfault from empty raster
...frame(x=1, y=1, z=4.7), aes(x, y, z=z)) + stat_summary2d()
This reliably causes a segmentation fault. sessionInfo() below.
What's happening is that (for reasons which I'll discuss with the
ggplot2 developers) the 'colorbar' guide is being built with a zero-size
source raster.
In L_raster() (grid.c), this raster is not a "nativeRaster", so we do
image = (unsigned int*) R_alloc(n, sizeof(unsigned int));
with n = 0, and R_alloc() gives us a NULL pointer.
The display of this raster requests interpolation, so we end up in
R_GE_rasterInterpolate(), where 'sraster'...
2010 Jan 16
1
"Too many raster images" in devPS.c
...ding raster
images into plots on R devices very useful! Thanks to Paul Murrell and
others for providing that. I noted that in
https://svn.r-project.org/R/trunk/src/library/grDevices/src/devPS.c
a macro is defined: #define MAX_RASTERS 64, and consequently, I get
Error in grid.Call.graphics("L_raster", x$raster, x$x, x$y, x$width,
x$height, :
Too many raster images
even for relatively innocent graphics, such as extensions of [2] (which
I made with Bioconductor's "splots" package). Besides that, I imagine
that raster images could be useful as 'glyphs' in variou...
2012 Mar 16
1
ggmap crash
...gt; ggplot(sites, aes(siteLon, siteLat)) + annotation_raster(h_raster, lonr[1], lonr[2], latr[1], latr[2]) + geom_point(aes(x=siteLon, y=siteLat), colour='red', data = sites)
*** caught segfault ***
address 0x196188000, cause 'memory not mapped'
Traceback:
1: grid.Call.graphics(L_raster, x$raster, x$x, x$y, x$width,
x$height, resolveHJust(x$just, x$hjust), resolveVJust(x$just,
x$vjust), x$interpolate)
2: drawDetails.rastergrob(x, recording = FALSE)
3: drawDetails(x, recording = FALSE)
4: drawGrob(x)
5: recordGraphics(drawGrob(x), list(x = x), getNamespace("grid&qu...