Activity

From 03/24/2011 to 04/22/2011

02:28 PM Task #215: Establish file organization and possible 'tiling' scheme for Fused Global Terrain data set: I propose dividing the globe into four quadrants:
Northwest Hemisphere, Southwest Hemisphere, Northeast Hemisphere,... Rick Reeves
02:20 PM Task #212 (In Progress): Validate fused DEM at SRTM/ASTER boundary: Rick Reeves
09:38 AM Task #212: Validate fused DEM at SRTM/ASTER boundary: I have assembled a good sample region, in Western British Colombia along the 60 degree latitude line
where SRTM and ... Rick Reeves
11:51 AM Task #208: Evaluate existing E&O AML scripts: Thank you Ming, more good information.
I do intend to assemble a workflow document of some type next week.
I will s... Rick Reeves
11:45 AM Task #208 (In Progress): Evaluate existing E&O AML scripts: I reviewed all of the AML scripts a second time and am ready to test them within ArcMap GIS. Next week I will do so r... Rick Reeves

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

04:05 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

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

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

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

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

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