Locations - North America, Central America
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Parts of the world will become virtualized as time and people arise to tackle
them. If you are working on any particular location and are willing to
be listed here, please let us know!
- Costa Rica
- contact: Sergio Muñoz [email@example.com],
a hydrogeologist working in Guatemala City, can provide some data and services,
he has worked with the hydrology available from the INSIVUMEH (national
institute) and created his own DEMs
- contact: Billy Pineda [firstname.lastname@example.org]
"I have DEMs 1:20,000 from the active volcanoes, also DEMs
1:50,000 from the most of the country and one DEM 1:250,000 from the entire
country, about imagery I have a couple of mosaics of the country with LandSat
7, also some aerial photos, orthophotos and a lot of thematic data (rivers,
roads, railroads, geology, population centres, towns, precipitation, evapotranspiration,
temperature, etc... )"
- DEMs for México
- distributed by INEGI (National
Institute of Statistics, Geographics and Information), a government
- they used to be expensive, about $2000 US for 256 one degree by
one degree grids of 3 arc second resolution (named GEMA and distributed
- Now (as of 2005) you can download, for free, 1:50,000 DEM of all
of Mexico, as well as the Southern US, at
this page on the INEGI website. You have to register to access
the DEMs and immediately you can download sections of 1 by 2 degrees.
This data is called El Continuo de Elevaciones Mexicano
(CEM). Resolution is 1 arc-second (~30m) and the data looks good,
although there are some TIN artifacts so accuracy may be lower.
- Also, if you are not going to use it for commercial purposes, you
can download them from North American Landscape Characterization (NALC)
or from ARIA (University of Arizona)
- Topo maps
- INEGI lists
522 topo quads at scale 1:50,000 in printed form, and the
page for digital data will report what data exists (but not how
to get it). There is also
interface. Reportedly: "Information is not free and you have
to fill out and sign a form stating how you are going to use the information.
Sometimes you have to wait for one to three days in order to receive
the bought information."
- INTEC Americas --
Mexico Geo Data State Promotions sells data bundled by state (e.g. $36,478
for 90m DEM for the whole country)
- INTEC Americas offers an
off-the-shelf 90m DEM of Panama along with country-wide road vectors and
250k DRG coverage. 30m DEMs, road vectors from 50k and LandSat-derived land
use clutter is available off the shelf for the 3 largest cities – Panama
City, David and Colon.
- Isla Coiba
- subject of a visualization project in 2002-2003, involved in a decision
on how to develop the island
- a good elevation and texture are in the