1. Geoscript allows the addition of spatial capabilities to scripting languages like Groovy and Python through the Geotools library, making GIS development simpler through batching and fast prototyping. 2. uDig is an open source desktop GIS application that supports geoscripting and spatial processing through tools like JGrasstools, and provides a scripting editor to write and run geoscripts. 3. Geoscripts in uDig can access vector and raster data, perform spatial operations, and use tools like JGrasstools for hydrological modeling tasks through a simple template-based process.

1. 1 /21
nvironmental ngineeringydroloGIS
HydroloGIS S.r.l. - Via Siemens, 19 - 39100 Bolzano www.hydrologis.com
Geographic scripting in uDig:
halfway between developer
and user
FOSS4G 2013 - Nottingham
Andrea Antonello, HydroloGIS
Silvia Franceschi, HydroloGIS
2013-09-19

2. 2 /21
"Geographic scripting..." == Geoscript
...it adds spatial capabilities to scripting languages
groovy
scala
javascript
python
clojure
- bases on the geotools library
- making development much simpler
- simplicity, batch-ing for non developers
- fast prototyping without compiling for developers

3. 3 /21
"Geographic scripting..." == Geoscript
Through geotools it provides support for:
vector data sources
raster data sources
various web services and databases
projections
vector geometry operations
rendering
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-
-
-
-
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4. 4 /21
"Geographic scripting..." == Geoscript
On what do we depend on?
Java
Advanced
Imaging &
Imageio-ext
Geotools EMF
JTS
Java
Topology
Suite
Geoscript

5. 5 /21
"Geographic scripting..." == Geoscript
Java
Advanced
Imaging &
Imageio-ext
Geotools EMF
JTS
Java
Topology
Suite
Deja vu!
Geoscript
uDig

6. 6 /21
"...in uDig" == Userfriendly Desktop Internet GIS
uDig is an open source desktop GIS application framework,
distributed under dual EPL and BSD license.

7. 7 /21
"...in uDig" == Userfriendly Desktop Internet GIS
uDig is an open source desktop GIS application framework,
distributed under dual EPL and BSD license.

8. 8 /21
"...in uDig" == Userfriendly Desktop Internet GIS
uDig has a spatial toolbox to do spatial processing with
the help of the jgrasstools project.

9. 9 /21
"...in uDig" == Userfriendly Desktop Internet GIS
uDig is also an extensible GIS framework to create apps on

10. 10/21
The Scripting Editor in uDig: since 1.4.0
open the editor to create a new script

11. 11/21
The Scripting Editor in uDig: since 1.4.0
the scripting editor

12. 12/21
The Scripting Editor in uDig: since 1.4.0
run and stop scripts
add common imports
handle memory
debug options
have some fun

13. 13/21
Command completion (...ehm suggestion)
minimal editor support
without dynamic access
to Java AST

14. 14/21
Syntax coloring
basic syntax coloring

15. 15/21
Interaction with uDig
Drag and drop support for file based data sources
Access to uDig object model not available (at the moment)

16. 16/21
Running the script
Each script is run in a different process
scripts can be stopped
output console
choose memory wisely

17. 17/21
University course available
http://jgrasstechtips.blogspot.it/2013/03/
course-geographic-scripting-in-udig.html

18. 18/21
Hydro- Geomorphologic processing with JGrasstools
By simply adding the JGrasstools jars to the "spatialtoolbox"
folder in the uDig installation, the jgrasstools processing
modules are enabled.
- aspect
- contour extraction
- network extraction
- slope
- maximum discharge
- lidar tools
}just examples
it is 0.1% of
what you can do

19. 19/21
Hydro- Geomorphologic processing with JGrasstools
Raster classes are enabled (now Geoscript also supports them)

20. 20/21
Hydro- Geomorphologic processing with JGrasstools
JGrasstools supplies help for modules and syntax templates:

21. 21/21
Hydro- Geomorphologic processing with JGrasstools
Templates just need to be filled:

22. 22/21
Hydro- Geomorphologic processing with JGrasstools
Extract contours

23. 23/21
Hydro- Geomorphologic processing with JGrasstools
More complex: extract river network from dtm

24. 24/21
Hydro- Geomorphologic processing with JGrasstools
More complex: extract river network from dtm

25. 25/21
nvironmental ngineeringydroloGIS
HydroloGIS S.r.l. - Via Siemens, 19 - 39100 Bolzano www.hydrologis.com
Geoscript
http://www.geoscript.org
uDig
http://www.udig.eu
JGrasstools
http://www.jgrasstools.org
Geographic scripting in uDig:
halfway between developer and user
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