[GRASS-user] Georrectify and nearest neighbor

GRASS GRASS user
1

My name is Jenny Turner and I’ve been using georrectify graphical module in WxpyTHon GRASS6.4. I saw a video of the proceeding but I would like to know if there is a description or a tutorial of what to do and how. I have understand what I have to do but I need to explain to other persons (non-grass users :slight_smile: ).

Just one more thing: Is it used any resampling to the data or only nearest neighbor?

Thanks
Jenny

2

On Wed, Jun 2, 2010 at 10:04 AM, Jenny Turner <jennyturner1980@gmail.com> wrote:

My name is Jenny Turner and I've been using georrectify graphical module in
WxpyTHon GRASS6.4. I saw a video of the proceeding but I would like to know
if there is a description or a tutorial of what to do and how.

Please take a look here:
http://grass.osgeo.org/wiki/Georeferencing

I have
understand what I have to do but I need to explain to other persons
(non-grass users :slight_smile: ).
Just one more thing: Is it used any resampling to the data or only nearest
neighbor?

Currently nearest neighbor. There may be a chance to have a choice in
future in GRASS 7 to also use other methods.
Please note that many resampling algorithms are already present in
GRASS, just not yet integrated with the image processing part.

Markus

3

Hi

Ok, but at least at georectify tool, Neares is used right? as well as copying a map from one mapset to another

Regarding the link, there is no explanation regarding the tutorial video. I mean, step by step what I do have to do

Thanks

On Thu, Jun 3, 2010 at 10:59 PM, Markus Neteler <neteler@osgeo.org> wrote:

On Wed, Jun 2, 2010 at 10:04 AM, Jenny Turner <jennyturner1980@gmail.com> wrote:

My name is Jenny Turner and I’ve been using georrectify graphical module in
WxpyTHon GRASS6.4. I saw a video of the proceeding but I would like to know
if there is a description or a tutorial of what to do and how.

Please take a look here:

http://grass.osgeo.org/wiki/Georeferencing

I have
understand what I have to do but I need to explain to other persons
(non-grass users :slight_smile: ).
Just one more thing: Is it used any resampling to the data or only nearest
neighbor?

Currently nearest neighbor. There may be a chance to have a choice in
future in GRASS 7 to also use other methods.
Please note that many resampling algorithms are already present in
GRASS, just not yet integrated with the image processing part.

Markus