My presentation given at the Foss4g in Nottingham about geoscripting inside uDig.

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

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"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

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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

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

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Syntax coloring
basic syntax coloring

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

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

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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:

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

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Hydro- Geomorphologic processing with JGrasstools
Extract contours

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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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