hello,
iam working on modis data. After geocorrecting the dataset iam unable to get
signatures by using i.class ( after selecting features if i try to
analyse then i face error : prepare data signatures ) please help me how to
classify modis data...is therere any another method
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Thank you very much for your useful answers. The commands v.to.point and
v.out.ascii are doing the trick!
About vertices and nodes, I noticed that you can have several nodes for the
boundary limit of a polygon. Why so? Is it beacuse the nature of the
neighbour polygon is different?
Regards,
Dear all,
I would to compute the maximum extent length for multipart polygons (ie the
distance between the 2 remotest vertices of the boundary limit; see the
attached picture). Is there a designated tool to do that or do I have to
compute it?
If a polygon has no other touching it, it should have 2 nodes and at
least 2 verticies.
When polygons touch other polygons, topology comes into play. So
when polygon B is adjacent to, and touching polygon A, that makes a
node because it is a shared line segment between polygon A and B.
Hello. I'm attempting to use v.net.path for the first time on a non-tutorial
data set (I've already worked through Neteler and Mitasova's hospitals
example from *Open Source GIS* 3rd ed.) I expect that my confusion and
questions arise from a relatively poor knowledge of the data structure of
the
Hi list!
I am sort of forwarding a friends question related to hydro-processing.
While there is a proper (vector) contour map and a very clean stream network
map (digitised from scratch upon topographic maps of 1:50.000) available, the
flow direction map is missing.
Is this information easily
On Saturday 01 of May 2010 05:30:04 Nikos Alexandris wrote:
I am sort of forwarding a friends question related to hydro-processing.
While there is a proper (vector) contour map and a very clean stream
network map (digitised from scratch upon topographic maps of 1:50.000)
available, the flow
Nikos Alexandris pisze:
On Saturday 01 of May 2010 05:30:04 Nikos Alexandris wrote:
I am sort of forwarding a friends question related to hydro-processing.
While there is a proper (vector) contour map and a very clean stream
network map (digitised from scratch upon topographic maps of
