Displaying 3 results from an estimated 3 matches for "sgdf2pct".
2009 Jul 15
1
Read PNG file and display with more than 256 colors RGDAL
Hello list
I am trying to use a Googlemaps tile (png file, 640 X 640 px tile) as a background to a plot and have been using the rgdal library to read in the PNG file (modified from code in the RGoogleMaps package). This works OK. My problem is is that the SGDF2PCT function in rgdal seems to be limited to 256 colors and this is introducing (I think) some degradation to the image which appears on the output graph as speckling.
Is there a way around this? I have been reading about the EBImage package but it (a) seemed to have too many dependencies on other so...
2007 Mar 03
1
R software to place points on Yahoo maps
Is there any R software that create an image from Yahoo maps together
with points of known UTM coordinates (or lat/long marked? Note that
my region of interest is not covered in sufficient detail by Google maps.
It actually does not have to be Yahoo maps as long as it has sufficient
coverage of my region but that's the one I have found with coverage of
my region. The scale I am interested in
2007 Mar 12
3
reading BMP into R
Um texto embutido e sem conjunto de caracteres especificado associado...
Nome: n?o dispon?vel
Url: https://stat.ethz.ch/pipermail/r-help/attachments/20070312/112cd7f9/attachment.pl