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Albert Decatur ([email protected])
How to Display Datasets of Billions of Pixels on the Web with Minimal Time and Hardware Requirements
latest datasets are thousands of times more detailed
datasets of billions of pixels
before after
spatial data on the web
web mapsused by browsers
network linked KMLused by virtual globes
OpenStreetMap
web maps
USGS latest earthquakes
network KML
minimal requirementsopen source software Linux GDAL/OGRscripting BASHunconventional devices
unconventional devices
wireless routershandheld devicesvirtual machines
netgear wireless router
Zipit – intended for IM
Zipit – intended for IM
virtual machines
virtual machines
run inside another machineuse any operating system you chooseuse as few resources as you demand
getting the data on the web
BASH scripting and GDAL/OGR
BASH
Bourne Again Shell shell – text interface to the computer also a scripting language
GDAL/OGR
set of open source spatial toolspraised by Googleused by most GIS companies
convert raster to kml superoverlay
getting the data on the web
create network linked kml
getting the data on the web
fine resolution land-cover classification on the web
example output
ancient hardware
next steps
ancient hardware
next steps
DEC machine, 1980s boot from floppy install linux, web server, map server
acknowledgementsProfessors Colin Polsky and Robert Gilmore Pontius Jr. The Clark University HERO ProgramThe holmes team – Nick Giner, Rahul Rakshit, and Dan Runfola
E-mail – [email protected] - http://hero.clarku.edu/holmes
This material is based upon work supported by the National Science Foundation (NSF) under grant Nos. BCS-0709685 (Coupled Natural-Human Systems), OCE-0423565 (Long-Term Ecological Research), SES-0849985 (REU Site), and BCS-0948984 (ULTRA-ex), and by the Clark University O'Connor '78 Endowment. Any opinions, findings and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the funders.
