Introduction to Geospatial - The open source method
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Transcript of Introduction to Geospatial - The open source method
Introduction to Geospatial
The Open Source Method
Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.
Alex Mandel. University of California, Davis. Nov 2011
You
You and your computer
buy software
$
That's not what I expected
“It's not broken, must be you”
“We might fix that in next 'years' version”
“That's not a bug, that's a feature”
“Our Engineers can't repeat the error”
If it was open source...
1 2
1 & 2 Chat @ Conference
1 2
1 & 2 Chat @ Conference
I need xY
I need Yz
If we collaborate, then we both have
xYz
I wonder who else might find this useful
and add to it?
Y
x z
Q
3
Thanks for xYz, Mind if I add Q?and give it to all my friends?
1
Wherever you work in the future,you'll have access to tools.
Open Licenses, Open Standards
● Open Geospatial Consortium
● kml, gml, wfs (vector)● wms, wcs (raster)● csw (metadata)
● ISO● FGDC
● OpenSourceInitiative ● Creative Commons● Scientific Commons● Free Software
Foundation (FSF)● Electronic Frontier
Foundation (EFF)
Keep it Simple - Copyright● Do whatever you want, the part I give you stays
open.● Same, give me attribution for my part.● Do whatever you want, if you change the part I
give you, you have to share that too.● If you change anything, the license applies to
your code too. (“CopyLeft”)
● Firefox
● LibreOffice/OpenOffice
● Thunderbird
● Filezilla
● Inkscape
● GIMP
● Audacity
● Python
● R
● Linux
Sound Familiar?● Google● Amazon● Facebook● IBM● Hulu
● 499 of the top 500 supercomputers run Linux/Unix/BSD – Nov 2011
It's about choice● “Our clients like open source because it keeps
costs down. We like open source because it gives us the freedom to innovate and build the best possible solutions.” - http://www.refractions.net/
Spend $ onOR
Competition is good for innovation
● 40+ mpg cars● Tabbed Browsing● Smartphones for $0
It's never been a one man band.
● ERDAS● ENVI● MapInfo● Bentley Map/MicroStation● Autodesk various...● SmallWorld● Manifold● IDRISI
Is it one or many?
ArcMap QGIS, OpenJump, Udig, GvSIG
Geoprocessing Ftools Plugin, GRASS, SAGA
Spatial Analyst GRASS, SAGA
3D Analyst GRASS, OSSIM
Geodatabase Spatialite
ArcSDE PostGIS
ArcGIS Server QGIS Server, Geoserver, Mapserver, Deegree, 52N
Flex,JS or Java API OpenLayers, Geomoose, Modest Maps
GPS Analyst Time Manager Plugin, EVIS Plugin
Imagery Analyst (ERDAS) Orfeo, Opticks, ILWIS
Geoportal1, Metadata Catalog Geonetwork, Geonode
Geostatisticl Analyst R
.Net, Python scripting Python, Java, Php, C, C++, .Net, JS
1. ESRI Geoportal was release under an open source license.2. Many packages in R address spatial statistics
OSGeo Live – http://live.osgeo.org
Tough Choices● It's not an either/or question, you can mix proprietary
and open source solutions.● You do need to pay a little attention to file formats.
– Example: ArcGIS project mxd is not openable by any other software, but shapefiles are.
● Flexibility to choose the right tool for each job● No one piece of software is ever going to do everything
you need.● For Scientists open data and repeatability is important.● Enable development of local skills & knowledge.
Use Case
Links you should have
● http://www.osgeo.org - Community● http://www.openstreetmap.org/ - Wiki Map of World● http://publiclaboratory.org - DIY Remote Sensing
● Map Knitter, online georegistration http://mapknitter.org/
● http://qgiscloud.com/ - Push maps to web● http://qgis.org - Desktop GIS● http://slashgeo.org - News● http://gis.stackexchange.com/ - Forums● http://naturalearthdata.com - Free data for pretty maps
Interesting “Companies”
● Development Seed ( http://developmentseed.org/ )● FortiusOne ( www.geocommons.com )● OpenGeo ( www.opengeo.org aka Open Planning Project)● Stamen Designs ( http://stamen.com/ )● Refractions Research ( http://www.refractions.net/ )● Cloudmade ( http://cloudmade.com/ )● Geofabrik ( http://www.geofabrik.de/ )● Sourcepole ( http://www.sourcepole.com )● etc...
Quantum GIS
Part II
Quantum GIS (QGIS)
Tim Sutton http://linfiniti.com/2011/10/qgis-1-7-0-download-stats/
Sometimes GIS feels like home.
Projection on the Fly
Off On
Projections don't always Fly
Off On
Demo Madness
Lots of cool plugins, written by users
OpenStreetMap in Crisis Response
Before After (2 days later)
Haiti, Jan 12 Earthquake
Source: Jonathan Gray, Jan 15, 2010 “Open Street Map community responds to Haiti crisis”Open Knowledge Foundation Blog
Data set in useImage from http://haiti.openstreetmap.nl/
Thanks
● Michele Tobias – airphotos● Tim Sutton – QGIS data● Bill Kendrick – processing tips● LDA 150 students who did the Extra Credit right