[GRASS-dev] An export order of layers/patch raster layers function for g.gui.mapswipe

GRASS GIS GRASS GIS developer
1

Dear all, apologies for silence (I have to answer to a couple of threads in
grass-dev) but I am overloaded. This is however a quick idea that crossed my
mind a few seconds before as I am working with the newest g.gui.mapswipe tool:

(Anna & Vaclav) wouldn't it be useful to have some sort of export of the
(raster) layers loaded in the Advanced mode (order matters!) to feed with the
r.patch module? Or directly a "Patch" function (interfacing the r.patch
module)?

Say, I have, in one of the panes (left or right, doesn't matter), from bottom
to top a generic Vegetation map (including let's say high and low vegetation),
a Water Map and on top a High Vegetation map (derived from another source) and
I want to patch these maps: 1st the High Vegetation map, the Water, then
whatever is NULL fill with data from the generic Vegetation map. Just a random
examlpe to make a point.

Makes sense?

Thank you, Nikos

2

Hi Nikos,

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On Wed, Dec 18, 2013 at 7:33 PM, Nikos Alexandris <nik@nikosalexandris.net> wrote:

Dear all, apologies for silence (I have to answer to a couple of threads in
grass-dev) but I am overloaded. This is however a quick idea that crossed my
mind a few seconds before as I am working with the newest g.gui.mapswipe tool:

(Anna & Vaclav) wouldn’t it be useful to have some sort of export of the
(raster) layers loaded in the Advanced mode (order matters!) to feed with the
r.patch module? Or directly a “Patch” function (interfacing the r.patch
module)?

Say, I have, in one of the panes (left or right, doesn’t matter), from bottom
to top a generic Vegetation map (including let’s say high and low vegetation),
a Water Map and on top a High Vegetation map (derived from another source) and
I want to patch these maps: 1st the High Vegetation map, the Water, then
whatever is NULL fill with data from the generic Vegetation map. Just a random
examlpe to make a point.

Makes sense?

It’s a quite specific task and I don’t think map swipe should support it directly. But I added context menu (r58489): right click in the list of layers and you get options to copy the map names in clipboard. There are 2 options for different order of maps. Names are separated by comma so you can just paste it in r.patch input parameter. Do you find this solution helpful?

Anna

Thank you, Nikos

3

On Wednesday 18 of December 2013 22:09:05 Anna Petrášová wrote:

It's a quite specific task and I don't think map swipe should support it
directly. But I added context menu (r58489): right click in the list of
layers and you get options to copy the map names in clipboard. There are 2
options for different order of maps. Names are separated by comma so you
can just paste it in r.patch input parameter. Do you find this solution
helpful?

More than... Perfect! Awesome!! :smiley:

Nikos

4

On Wednesday 18 of December 2013 22:09:05 Anna Petrášová wrote:
..

...I added context menu (r58489): right click in the list of layers and you
get options to copy the map names in clipboard. There are 2 options for
different order of maps. Names are separated by comma so you can just paste
it in r.patch input parameter. Do you find this solution helpful?

WoW!! Thank you so much Anna. Really useful.