Alina,
The zip code shapefile for the whole state is carried
by census people. But census tends to be larger areas
than desired. I have found local offices be more
helpful because I have found the people locally that
produce the maps for the upstream organizations like
the state or council of gove
The rgdal package can read png images. See:
http://finzi.psych.upenn.edu/R/Rhelp02a/archive/94605.html
On Sun, Mar 8, 2009 at 12:32 PM, Markus Loecher
wrote:
> Dear R geo wizards,
> while I am very happy with the kmloverlay() function from the maptools
> package to create overlays from R in Goog
I don't know of any functions to load and display a .png file, but if you can
convert it to .jpg (Imagemagick is one way) then you can read it and plot it
with the rimage package. You can then use updateusr from the TeachingDemos
package to change the user coordinates to match the latitude and
Does anyone know where I can find a shapefile with zipcodes for Boston
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Koen,
Congalton and Green 1999 ("Assessing the Accuracy of Remotely Sensed Data:
Principles and Practices") describes such a method which they term Margfit.
This method "can be applied to normalize or standardize the error matrices
for comparison purposes.
Margfit uses an iterative proportional
Dear list,
I need some expert assistance on a geo-statistical question.
I have two maps, first and second choice classification results. And I
have two areas selected within this map. For these areas I calculated
confusion matrices.
However, I want to compare these matrices. I was considering a
Hi all,
I thought that this might be of interest. I have spent few days on trying to
automate donwload and resampling of MODIS products (under windows machines).
The instructions and a sample script is available here:
http://spatial-analyst.net/wiki/index.php?title=Download_and_resampling_of_M
