QGIS » SEXTANTE

Addendum
1) if the three selected attributes are not the same, obviously, the "dissolve" function doesn't produce effects

2) using the dissolving parameter "all polygons" makes an error:
"Could not load layer: C:\Users\skampus\sextante\tempdata\sagapolygondissolve30.shp
Check the SEXTANTE log to look for errors in algorithm execution"

from info window :
Module caused access violation!
Polygon Dissolve: Module caused access violation!
error: executing module [Polygon Dissolve]

this error comes also using directly saga with its gui

Tested again with Sextante trunk under Linux. Beside the above notes now the error message is

1. ## ##### ##

1. ### ## ###
2. # ## ## #### # ##
3. ##### ## # #####
   1. # ## ##### # ##
      _____________________________________

library path: /usr/lib/saga
library name: libshapes_polygons
module name : Polygon Dissolve
author : O.Conrad (c) 2008
_____________________________________
go...

I cannot replicate! No error here!
What parameter are you using for?

Salvatore Larosa wrote:

I cannot replicate! No error here! What parameter are you using for?

ouch... maybe I have SAGA not configures properly in sextante in my Linux box? After installing SAGA should I have to do something (the path is automatically detected as for GRASS?)?

There is no need to do anything!
it is automatically detected!

Did you try to run the same SAGA command in CLI?

Did you try to run the same SAGA command in CLI?

no (please give me an hint, I'm not used to use the SAGA cli), but I tested the native SAGA gui and worked.

I also noticed now that if in the SAGA polygon dissolve tool I select "save to file..." after entering the shape name and clicking OK I get

std::bad_alloc

and QGIS freezes.

I hope that are just local problems, if you don't confirm then I will give a try on another machine.

Giovanni Manghi wrote:

Did you try to run the same SAGA command in CLI?

no (please give me an hint, I'm not used to use the SAGA cli), but I tested the native SAGA gui and worked.

Simply copy the command found in saga_batch_job.sh script and paste it into your shell!

I also noticed now that if in the SAGA polygon dissolve tool I select "save to file..." after entering the shape name and clicking OK I get

std::bad_alloc

and QGIS freezes.

I hope that are just local problems, if you don't confirm then I will give a try on another machine.

Giovanni I confirm!
I get that error sometimes when I start QGIS, but without freeze!
I can not seem to generate a backtrace!

Maybe I am wrong, I guess this is not a sextante bug!

I tried other tools (Dissolve, Mean Shift segmentation....) and I got the same error!

Salvatore Larosa wrote:

I tried other tools (Dissolve, Mean Shift segmentation....) and I got the same error!

can you file a ticket please?

Salvatore Larosa wrote:

Giovanni Manghi wrote:

Did you try to run the same SAGA command in CLI?

no (please give me an hint, I'm not used to use the SAGA cli), but I tested the native SAGA gui and worked.

Simply copy the command found in saga_batch_job.sh script and paste it into your shell!

I got the same message and the issue is a typo, a missing "D" (in bold here following)

1. # ## ##### # ##
   _____________________________________

library path: /usr/lib/saga
library name: libshapes_polygons
module name : Polygon Dissolve
author : O.Conrad (c) 2008
_____________________________________
go...
Unknown option 'DISSOLVE'
Usage: Polygon Dissolve -POLYGONS <str> [-FIELD_1 <str>] [-FIELD_2 <str>] [-FIELD_3 <str>] -DISSOLVED <str> [-ALL <str>]
-POLYGONS:<str> Polygons
Shapes (input)
-FIELD_1:<str> 1. Attribute
Table field
-FIELD_2:<str> 2. Attribute
Table field
-FIELD_3:<str> 3. Attribute
Table field
-DISSOLVED:<str> Dissolved Polygons
Shapes (output)
-ALL:<str> Dissolve...
Choice
Available Choices:
[0] polygons with same attribute value
[1] all polygons
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