Dear R user,
I am trying several methods to find the right solution. I have a raster DEM
grid. Is it possible to select all pixel where the pixel value around (8
pixel or 24 or more) is >2/3 of value my pixel x?
Gianni
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Ahhh - so simple, my mistake. Thanks!
Murray
José Manuel Blanco Moreno wrote:
Hello,
The problem is that your first three points CANNOT be collinear. This
is a feature of trmesh in tripack. So: either you "unsort" your data
(keeping the indices you can sort them again) or alter (e.g. jitter)
Dear all,
I want to plot the cross hscattergram between two different variables.
I used the following instruction:
hscat(jura.pred$Cd~jura.pred$Zn, jura.pred, c(0, 0.1, 0.2, 0.3, 0.5, 1),
alpha=c(0,45))
where jura.pred$Cd and jura.pred$Ni are the two variables, but the result
obtained is th
Dear R user
I ask some suggestio about this code that I wish to write. I have a raster
grid a polygons shape files. I need to extract the pixel value inside
the shape polygon and calculate the weight.mean and associate that value to
polygon raster. Is there a package useful to do this that I could
Hi Phil,
I saw your post and have been doing this exact thing for the US
recently. Do you have a county shapefile? You will need this to join
your data (Y) to. I typically use ArcGIS to join my attribute data
to my shapefiles, but I don't know if you have access to this
software. This
Hello,
The problem is that your first three points CANNOT be collinear. This is
a feature of trmesh in tripack. So: either you "unsort" your data
(keeping the indices you can sort them again) or alter (e.g. jitter) the
coordinates very slightly. Either solution will do the work.
Cheers,
José M
On Fri, 3 Apr 2009, milton ruser wrote:
Hi Roger,
I think I am making something wrong (see the error message, please).
reser is the polygon object that I read from a shapefile.
Thanks for your time.
milton
class(reser)
[1] "SpatialPolygonsDataFrame"
attr(,"package")
[1] "sp"
head(re...@da
