Silvia Franceschi (1), Andrea Antonello (2), and Riccardo Rigon (3)(1) HydroloGIS, Environmental Egineer, Bolzano, Italy (silvia.franceschi@gmail.com), (2) HydroloGIS, Environmental Egineer, Bolzano, Italy (andrea.antonelloi@gmail.com), (3) Department of Civil and Environmental Engineering - Trento (Italy) (riccardo.rigon@ing.unitn.it)

Not anymore without the GIS (JGrass)

AcknowledgmentsThe authors thank Daniele Andreis for helping in producing this poster

Introduction

If I hear, I forget, If I see, I remember, If I do, I learn

Ancient Chinese Proverb

Look at our favorite Hydrological books:

• Keith Beven, Rainfall - Runoff Modelling: The Primer, Wiley, 2001.

• Rafael L. Bras, Hydrology : an introduction to hydrologic science, Addison-Wesley, 1990.

• Rafael L. Bras and Ignacio Rodriguez-Iturbe, Random functions and hydrology, Addison-Wesley, 1985.

• Wilfried Brutsaerts, Hydrology: An Introduction, Cambridge University Press, 2005.

•S. Lawrence Dingman, Physical hydrology, Prentice-Hall, 2002.

•Dodge J., A general theory of the unit hydrograph. Journal of Geophysical Research 64:241–256, 1959.

• Peter S. Eagleson, Dynamic Hydrology, McGraw-Hill Inc.,US,1970.

we learned from them all, and some of their science flowed into our classes (look at the references to, have a glimpse at fit). However, then we faced with the problem to practice this science. The older book, obviously, where not really aware of computers and presented simple exercises. Also the more recent. however do not exploit up-to date support for modern practice of Hydrological Theory, even if a severe efforts were recently made in this direction.

Modern scientific language

Wagener's et al. (2004) constitute a recent effort which uses a modern scientific language to cope with catchment analysis.

We like those languages that constitutes some of the best pieces of software ever. However, since we would not oblige students to buy commercial codes, which total cost would amount to a consistent part of the annual salary.

Besides that languages and tools have a limited support of GIS characteristics. (In any case we plan to support the R-statistical language that is open source).See poster A222 by Bellin and Zambrano in this session.

PREREQUISITESWe have different students and users. Let say:

• undergrad• grad• researchers• professional• amateur

Which have different goals:

• visualize • understand• improve (and finding the limits)• support decision making• store and retrieve data for later use

And live in different countries:

• Full access to informatics infrastructures (computers, internet)

• Limited access to informatics and low spending capabilities

Teachers wants their students to access as much aspossible the tools without extra costs, if possible.

Thus we want:

• an open source project.• programming in a neutral language (Java).• platform neutral, it can run on windows, linux and

Mac.• businnes neutral: GPL would be fine, LGPL better.• target at personal productivity of different users,

people come before program efficiency.• built by open source tools.• deployable through the WEB.• allows wrapping of existing code but promotes better

programming strategies.• Data Base provided.• CUAHSI specification aware.• OGC compiliant.• Can be endowed with ontologies.

These requests were satisfied by creating JGrass, whichis described in the Poster aside of this.

.

USE CASESA - You want to talk about basin delineation:

B - You need to access “real” data and storing them in a DB.

References Rigon R., Introduction to Geomorphology, 2010. http://www.slideshare.net/GEOFRAMEcafe/1-hydrogeomorphology

Rigon R., Introduction to GIS, 2010http://www.slideshare.net/GEOFRAMEcafe/2-introduction-gis

Rigon R., Introduction to JGrass, 2010.http://www.slideshare.net/GEOFRAMEcafe/3-introduction-to-jgrass

Wagener T., Wheater H.S., and Gupta H.V., Rainfall-Runoff Modelling In Gauged And Ungauged Catchments, Imperial College Press, 2010.

GoalsUsers Visualize Understa

ndImprove

Support decision making

Store and retrive

data for later use

undergraduate

researchers

professional

amateur

Users vs goals

A simple example of script and its result

JGrass communitywww.jgrass.orgJGrass is a Free Software GIS which has been developed by Hydrologis and CUDAM since the year 2003. The original community however is seeking for creating around JGrass an ecosystem of co-developers and users. In fact from the beginning JGrass was designed to serve the community, looking at a better interface for GRASS, and already made a further step in this direction joining the udig community. Beegis is a new cooperation between Hydrologis and the University of Urbino, that can serve as an example for other Institutions and people.

Extraction of the basin with JGrass An example of the migration to OMS3(on the left there is the old code)

An example of how to use geonotes with a picture

C - You are a researcher.

D - You want to do a field survey