On Tue, Nov 26, 2013 at 3:39 AM, Dave Roberts
dvr...@ecology.msu.montana.edu wrote:
Friends,
I'm not exactly a newbie, but still yet quite naive in GRASS. This seems
like a simple problem, but I suspect unforeseen problems with the simple
solution.
I have imported a surficial geology
On 26/11/13 03:39, Dave Roberts wrote:
Friends,
I'm not exactly a newbie, but still yet quite naive in GRASS. This
seems like a simple problem, but I suspect unforeseen problems with the
simple solution.
I have imported a surficial geology map from a shapefile. There are
1082 polygons.
Hi,
I'm pretty sure that this has been discussed before and even that some
solution already exists, but I just can't seem to find the right search
terms to put my hands on it:
I have a raster layer with landcover at 0:00:10 resolution. I would like
for a select of the landcover classes
On Tue, Nov 26, 2013 at 11:08 AM, Moritz Lennert
mlenn...@club.worldonline.be wrote:
Doesn't v.in.ogr attribute new, unique cat values to every polygon ?
Not if the input feature is a MULTI* feature. All features in a
MULTIPOLYGON, MULTILINE, or MULTIPOINT will get the same category.
That keeps
Thanks Markus. This has me on the right track, but I haven't gotten it
all to work yet.
v.category map=geo type=centroid op=add layer=2
refused to work without a new output map, so
v.category inp=geo out=new_geo op=add layer=2
produced a new vector map where the cats are unique for each
Hi,
I'd like to calculate the sum of all raster values that belong to a certain
group. This spatially organized group is also indicated by an overlay
raster (same resolution). Finally I want to assign these sums to a new
raster. That might sound slightly complicated but here an example:
Asume
I would suggest to run
v.category inp=geo type=centroid out=new_geo op=add layer=2 --o
Thanks Markus! Now I'm getting somewhere. v.info shows geo and new_geo
in perfect correspondence for areas, islands, boundaries, etc.
d.what.vect shows new_geo with the original data in layer 1 and
On Tue, Nov 26, 2013 at 4:34 PM, Dave Roberts
dvr...@ecology.msu.montana.edu wrote:
I would suggest to run
v.category inp=geo type=centroid out=new_geo op=add layer=2 --o
Thanks Markus! Now I'm getting somewhere. v.info shows geo and new_geo in
perfect correspondence for areas, islands,
Markus,
Thanks a mill! I'll try that when I get back to that machine.
I really appreciate you time end expertise. You're a scholar and a
gentleman.
Dave
On 11/26/2013 08:48 AM, Markus Metz wrote:
On Tue, Nov 26, 2013 at 4:34 PM, Dave Roberts
dvr...@ecology.msu.montana.edu wrote:
Markus Metz wrote:
I just realize I've used r.composite for ages without wondering how I
could perform the reverse task. The thing is I ran r.composite on a 3
band geotiff orthoimage, dropped the initial .red, .green and .blue
rasters, and I would need them now in order to run r.out.vtk
Hi Augusto,
In GRASS-6.4.3, i.class only works on 8bit images. Since the Landsat 8
products are
12bit data, proper signature files cannot be produced by i.class.
You could try rescaling data to 8bit and see if i.class and i.maxlik works.
Best
Venka
P.S. I hope i.class will be support 12,
Markus,
v.to.db map=new_geo layer=2 column=surgeo option=query qlayer=1
qcolumn=surgeo
In this example, the column surgeo in layer 2 must exist and must be
of the same type like the column surgeo in layer 1.
the qcolumn actually had a different name, but with that small
correction this
Hello Venka
Thank you for your response
Unfortunately, I did rescale my lsat8 images to 8bit, however, I tested
with North Carolina sample dataset which is Landsat 7 (8bit) and got the
same error, so it must be something else, maybe i.class generating a wrong
signature file?
2013/11/26
OK for the caution Glynn,
for my particular concern I finally re-ran the process from the source
files.
Thank you,
V.
Le mardi 26 novembre 2013 à 19:07 +, Glynn Clements a écrit :
Markus Metz wrote:
I just realize I've used r.composite for ages without wondering how I
could
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