Re: [GRASS-user] Processing NAIP images

2014-01-28 Thread Pedro Camargo
Thanks, Jiao!! This helps a lot!!! Pedro From: Jiao Wang [mailto:j...@hawaii.edu] Sent: Tuesday, January 28, 2014 1:02 PM To: Pedro Camargo Cc: GRASS user list Subject: Re: [GRASS-user] Processing NAIP images Hi Pedro, I did a test run and created an unsupervised classification

Re: [GRASS-user] Processing NAIP images

2014-01-28 Thread Jiao Wang
Hi Pedro, I did a test run and created an unsupervised classification image. Here are the steps I did: 1 MrSID to tiff in QGIS 2 import tiff in GRASS (i.in.gdal) 3 create group and subgroup (i.group ---check "Define also sub-group(same name as group)"--- in the "Layers in selected group" keep on

[GRASS-user] Processing NAIP images

2014-01-28 Thread Pedro Camargo
Hi, I am trying to generate land use maps (looking to identify roadways only, actually) using NAIP imagery. Since I am using the pre-compiled GRASS, I do not have MrSID inside GRASS, so converted the images to TIFF using QGIS. I believe I can use i.maxlik or something like tha

Re: [GRASS-user] [GRASS-dev] Object-based image classification in GRASS

2014-01-28 Thread Martin Landa
Hi Moritz, 2013-10-30 Moritz Lennert : > though some components would be nice to have in addition. Attached you can > find a simple shell script which shows all the steps I went through. I > commented it extensively, so it hopefully is easy to understand. I just wanted to thank you for the scrip

[GRASS-user] r.diversity (r.li) options on windows

2014-01-28 Thread Luigi Ponti
Hi there, As part of a master's thesis, we would like to use r.diversity to process aerial multi-spectral imagery using a Windows 7 machine. (The most recent piece of info is apparently this grass-devel thread: http://article.gmane.org/gmane.comp.gis.grass.devel/56124 Putting Luca and Alessan

Re: [GRASS-user] add a centroid in the center of polygon

2014-01-28 Thread Markus Metz
On Mon, Jan 27, 2014 at 9:38 AM, Moritz Lennert wrote: > On 25/01/14 12:52, Markus Metz wrote: >> >> On Sat, Jan 25, 2014 at 12:27 PM, Markus Neteler >> wrote: >>> >>> On Sat, Jan 25, 2014 at 12:08 PM, Markus Metz >>> wrote: On Sat, Jan 25, 2014 at 12:10 AM, Milton Ribeiro wrote:

Re: [GRASS-user] Transforming raster lines to vectors with correct segment attributes

2014-01-28 Thread Moritz Lennert
On 27/01/14 11:27, Johannes Radinger wrote: Hi, I have a raster river (processed with r.thin) which I want to transfrom to a vector. Therefore I use r.to.vect with the lines option. However, the raster has two different values representing e.g. habitat quality (good/bad) for single segments (gro