Re: [Qgis-user] Trying to establish contact with GIS educators using QGIS

[Brent Wood]

Hi,
Google "+QGIS +University course" throws up a few useful results-
Harvard, Newcastle, Southampton, Maynooth & Bristol Universities.This sort of 
course might also be of interest: 
http://www.tzcrc.org/wp/training/advanced-gis-with-postgis-and-qgis/
and closer to home: 
http://arwh.org/event/2-day-qgis-course-ecologists-conservation-practitioners

There are also QGIS courses associated with universities rather than run by 
universities. A staff member may run classes, for example.
Cheers
Brent Wood

  From: Badri Basnet 
 To: qgis-user@lists.osgeo.org 
 Sent: Wednesday, July 27, 2016 3:54 PM
 Subject: [Qgis-user] Trying to establish contact with GIS educators using QGIS
   
Hello List Members,   Greetings from Toowoomba, Queensland, Australia.   I 
have recently started using QGIS as a teaching tool for providing hands-on GIS 
skills to my undergraduate students in my introductory GIS courses at the 
University of Southern Queensland (USQ).   I am interested to contact with 
members (possibly academics of other educational institutions) around the world 
who are using QGIS software as a teaching tool in their GIS or GIS related 
course/s.   Would there be a list of members (and their affiliation) currently 
using QGIS software in their teaching?  If there is, please direct me to the 
list. If not, please suggest me on how I could possibly contact other similar 
users.   Thank you.   Regards   --- Badri B. Basnet School of Civil Engineering 
& Surveying Faculty of Health, Engineering & Science, The University of 
Southern Queensland West Street, Toowoomba, QLD 4350 Phone: +61 7 46312537 Fax: 
+61 7 46312526 E-Mail: badri.bas...@usq.edu.au   
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[Qgis-user] Trying to establish contact with GIS educators using QGIS

[Badri Basnet]

Hello List Members,

Greetings from Toowoomba, Queensland, Australia.

I have recently started using QGIS as a teaching tool for providing 
hands-on GIS skills to my undergraduate students in my introductory GIS 
courses at the University of Southern Queensland (USQ).


I am interested to contact with members (possibly academics of other 
educational institutions) around the world who are using QGIS software 
as a teaching tool in their GIS or GIS related course/s.


Would there be a list of members (and their affiliation) currently using 
QGIS software in their teaching?  If there is, please direct me to the 
list. If not, please suggest me on how I could possibly contact other 
similar users.


Thank you.

Regards

*---*

*Badri B. Basnet*

School of Civil Engineering & Surveying

Faculty of Health, Engineering & Science,

The University of Southern Queensland

West Street, Toowoomba, QLD 4350

Phone: +61 7 46312537

Fax: +61 7 46312526

E-Mail: badri.bas...@usq.edu.au

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[Qgis-user] QGIS browser panel

[Chris Buckmaster]

Hi

I tried to open the directory to a mapped drive on my PC with the QGIS (2.16) 
browser panel and found that it took around 3 minutes to open.

Just wondering by default does each file get scanned or something for it to 
take such a long time to open? And is there a way to change this so it will 
only perform the necessary actions when I choose a file to add to my layer 
panel?

Thanks, Chris

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[Qgis-user] results in gml for Grass algorithm

[ludo]

Hi all
In a script for qgis I need to use some GRASS algorithm like v.clean but I need 
to get a gml file instead of a shapefile, is it possible ? (I don't want to 
convert a shapefile in gml)
I see something in Grass7Algorithm and I try to modify ESRI_Shapefile by GML 
and shp by gml but when I do something like that then Grass's algorithm stop 
working.
And it's not seems to be reasonable to modify this file. My script needs to be 
share easily.
Have you got an idea ?
Thanks a lot
Regards
Ludovic
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Re: [Qgis-user] Handling of PostGIS TopoGeometry layers

[Sandro Santilli]

On Mon, Jul 25, 2016 at 07:21:16AM -0400, AW wrote:

> I was examining the SQL-statements which QGIS uses to deal with TopoGeometry 
> layers. It essentialy looks somewhat like this:
> 
> ---
> SELECT st_asbinary("topo",'NDR'),"gid"
> FROM "public"."topo_test"
> WHERE "topo" && 
> st_makeenvelope(138.48618410228871767,-35.03610634074148322,138.71434043049001161,-34.78702094367417885,4326)
> ---
> 
> Those kind of statements run really slow because the column "topo" of type 
> TopoGeometry does not have any spatial index.
> In my case the table has a "normal" Geometry column AND a TopoGeometry 
> column, which are pretty much in sync.

[...]

> So I am asking for your opinion if a possibly small addition to a 
> TopoGeometry layer properties in form of e.g. a checkbox is 
> thinkable/reasonable which enables the alteration of the statement to 
> something like that (given the hint, that both geometry columns have to be 
> more or less in sync):
> 
> ---
> SELECT st_asbinary("topo",'NDR'),"gid"
> FROM "public"."topo_test"
> WHERE "geom" && 
> st_makeenvelope(138.48618410228871767,-35.03610634074148322,138.71434043049001161,-34.78702094367417885,4326)
> ---
> 
> Would that be a way to tackle this well known performance issue?

My feeling is that it would be very useful to be able to specify,
for the PostgreSQL provider, a custom dynamic filter, where the
pixel size and extent are available as substitutable queries.

I think there's also an hub ticket for this enhancement, waiting
for a contributed patch.

That, or being able to specify different columns for *rendering*
and *filtering*.

Note that another use case is the "face" layer of the TopologyViewer,
which would benefit from filtering on the "mbr" column rather than
on the result of the expensive ST_GetFaceGeometry call.

--strk;

  ()   Free GIS & Flash consultant/developer
  /\   https://strk.kbt.io/services.html
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