04/21/2011

02:28 PM Task #212: Validate fused DEM at SRTM/ASTER boundary

As part of the fused digital terrain layer validation we are looking for 'edge discontinuities' at the boundary betwe... Rick Reeves

10:59 AM Task #207: Produce global fused DEM layer

I see your point re: cell resolution, if we stay in the realm of arc-seconds.
Yes, we are in agreement about produc... Rick Reeves

04/20/2011

04:05 PM Task #207: Produce global fused DEM layer

Also, when you're simply combining tiles, you can get big efficiency gains by using the VRT format with GDAL, rather ... Jim Regetz

03:48 PM Task #207: Produce global fused DEM layer

Thanks Rick. Regarding pixel sizes (cell resolution), what we've been calling "1km" is just shorthand for 30 arcsecon... Jim Regetz

02:10 PM Task #207: Produce global fused DEM layer

(continuing from previous update)
Digital Terrain File data sources:
CGIAR / SRTM 90 meter Digital Elevation Da... Rick Reeves

09:47 AM Task #207 (In Progress): Produce global fused DEM layer

Jim Regetz

09:43 AM Task #207: Produce global fused DEM layer

I have downlowded the complete set (872 files) of CGIAR / SRTM 90 meter data tiles and most if not all (2780) availa... Rick Reeves

04/19/2011

09:48 PM Task #212: Validate fused DEM at SRTM/ASTER boundary

Part of the process of constructing and testing the resampling/mosaicing scripts
for constructing the fused terrain... Rick Reeves

04/18/2011

01:36 PM Task #215 (Rejected): Establish file organization and possible 'tiling' scheme for Fused Global Terrain data set

The size and scope of the global fused DEM terrain layer makes it impractical
to distribute and use the layer (and ... Rick Reeves

01:12 PM Task #213 (Resolved): Confirm with Project Scientists: CGIAR Level 4 SRTM project supports planned Terrain Analysis

Review is complete, based on Rob G's response (below) and on
Based also upon discussions with Mark Sand Jim R on Apr... Rick Reeves

12:32 PM Task #208: Evaluate existing E&O AML scripts

Description of ten existing scripts (nine AML, one Python):
Aggregate.aml: Executes the aggregate (resampling) fun... Rick Reeves

04/15/2011

10:25 AM Task #213 (Resolved): Confirm with Project Scientists: CGIAR Level 4 SRTM project supports planned Terrain Analysis

Ming's initial research identified the SRTM Level 4 DEM data distributed by the CGIAR Consortium (http://srtm.csi.cgi... Rick Reeves

04/14/2011

03:42 PM Task #212 (Closed): Validate fused DEM at SRTM/ASTER boundary

Particularly for the purposes of examining and validating what happens at the SRTM/ASTER boundary, the fused DEM shou... Jim Regetz

02:21 PM Task #211 (New): Produce global flow accumulation layer

This will be based on the global DEM, but with processing possibly done at up to 90m resolution before aggregating to... Jim Regetz

02:15 PM Task #210 (New): Produce global aspect layer

This will be based on the global DEM, but with processing possibly done at up to 90m resolution before aggregating to... Jim Regetz

02:13 PM Task #209 (New): Produce global slope layer

This will be based on the global DEM, but with processing possibly done at up to 90m resolution before aggregating to... Jim Regetz

01:56 PM Task #208 (In Progress): Evaluate existing E&O AML scripts

There are 18 *.aml files in various parts of @eos:~organisms/topo@, although it looks like these are really 9 identic... Jim Regetz

11:50 AM Task #207 (In Progress): Produce global fused DEM layer

This is the top-level ticket associated with creation of a global fused DEM layer, with subtasks to flesh out specifi... Jim Regetz