[GRASS-dev] Re: sample dataset update

Helena Mitasova hmitaso at ncsu.edu
Thu Jun 23 00:44:08 EDT 2011

Below are some plans for data updates. It would be useful to put this on wiki
so that others can comment, add, modify. I was thinking about
but this is really for downloads, so perhaps as a new section here?

Feel free to post it on wiki (or suggest where it would fit and I will post it).
After I get some feedback I will prepare the first version of the new mapsets for networks and timeseries
to test whether they are suitable,

thanks, Helena


Prepare new data sets (grass7 vector format?):
- provided as separate MAPSETS that can be inserted into nc_spm_08 or gisdemo_ncspm (or their grass7 versions)
- packaged all into single location (nc_spm_11) which could reach 1GB.
- each MAPSET will have an example of application

proposed new MAPSETS:

Road and street networks (nconemap, ncdot)
LRS road network, Integrated Statewide Road network, Bike Paths
- streets for wake http://www.wakegov.com/gis/services/data.htm`
-add boundaries and POI for reference?
-include emergency centers ? hurricane evacuation routes? potential emergency shelters?
-include stream network?

coastal lidar point clouds, 1m res DEMs, orthos, 15 years in 10-15 snapshots
extended version of this
also used for coastal analysis toolbox add-ons

new 4 channel 1m res 2009 imagery NAID
new NLCD 2006 from USGS and NLCD2001
0.15m res ortho?
include any post storm, post hurricane, post flood imagery for training purposes?
see example here:

this may take more time to prepare,
data are available for 1970,80,90,2000,2010
combine with election districts?

- cleanup and provide nc_ll, nc_utm, nc_spf for testing projections

EXTERNAL data sets for testing external data formats
- point cloud asci, las
- shape
- geodatabase?
- MRsid, geotiff?

Anything else from here?
(we provide link to this so only data to be used for GRASS tutorials and testing should be in the data set)

On Jun 20, 2011, at 11:15 AM, Markus Metz wrote:

> Hi all,
> we may want to think about an update of the sample datasets. I have
> recently updated the documentation of the v.net.* modules including
> examples and noticed that roads digitized as multilanes have wrong
> line directions, i.e. not matching drive directions. This makes
> assignment of different forward/backward costs impossible. The vector
> map roads in nc_spm_08 should also get a new layer with unique
> category values. The updated, correct examples are anything but
> intuitive and would be much shorter and simpler with already existing
> unique categories in roads at PERMANENT.
> Helena also mentioned the LiDAR-based DEM in nc_spm_08 which needs to
> be expanded. With the development of a test suite for G7, I am sure
> that there will be more requests for updates of the sample datasets.
> Time for a TODO list somewhere?
> Markus M

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