[Qgis-developer] fTools and GdalTools: sextante vs original plugins

Bernhard Ströbl bernhard.stroebl at jena.de
Wed Apr 17 00:06:37 PDT 2013

Hi all,

for a course I am about to give tomorrow I played a bit with SEXTANTE, 
although I am going to teach geoprocessing with fTools (we are using 
QGIS 1.8). It was my first go with SEXTANTE and I was about to show what 
it will offer in the future. Therefore I built a small model with three 
input layers a buffer and two overlay operations. I did not succeed in 
running the model so I tried in current master.
As it currently is SEXTANTE is not operable for me (or I am doing it 
wrong): First message is "Layers do not all use the same CRS...." 
although they definitely do and the same EPSG-code is noted in square 
brackets behind each layer name!? Second I get an "Error executing 
algorithm..." it seems as SEXTANTE cannot use PostGIS layers as input 
(when I save them as shape files the model runs perfectly), this is a 
big limitation as my institution stores almost everything in PostGIS. 
(SEXTANTE should not offer PostGIS layers to choose as input layers then).

Well, this was a very disappointing experience because additionally QGIS 
was frozen two or three times opening or closing the model. I do not 
want to complain, all I want is to ask for keeping fTools as they are 
until SEXTANTE can _really_ replace them in all aspects. Then we should 
remove the vector menue completely because I agree that finding the tool 
you are looking for is a lot easier in SEXTANTE.

my 2 cents


Am 17.04.2013 07:42, schrieb Anita Graser:
> On Wed, Apr 17, 2013 at 3:19 AM, Mathieu Pellerin <nirvn.asia at gmail.com
> <mailto:nirvn.asia at gmail.com>> wrote:
>     There might be a way to make most people happy here.
>     I find the vector menu a nice ui shortcut for useful functions. If
>     sextante relevant functions are at par (or better), couldn't the
>     vector menu items stay, which would please many, and when clicked
>     triggers sextante's function dialogue? Victor? Same thing could
>     happen with vector menu too. Sextante's analysis toolbar is super
>     useful but might be a throwback for some if vector / raster menu
>     functions disappear.
>     On human resource (coders and testers) and maintenance angles,
>     keeping to mechanism to do same thing is an obvious waste.
> I see. So you'd suggest to keep only Sextante code (where duplicates
> exist!) but provide shortcuts from the menu? I'd +1 that.
> I've been testing a variety of functions in the menus and in Sextante
> over the last days and there are always some broken ones. Neither
> "package" is without major bugs today.
> We need to get it together for 2.0 and that's easier if we can focus on one.
> Best wishes,
> Anita

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