Friday, October 31, 2008
Alaska State Geo-spatial Data Clearinghouse (ASGDC)
Alaska State Geo-spatial Data Clearinghouse (ASGDC) provides the community with access to online maps, Data on CDs, and secure GIS data by State agency. The Alaska State Geo-spatial Data Clearinghouse (ASGDC) provides an electronic pathway for the public to access a wide variety of information in the form of maps, images and descriptions about Alaska geo-spatial data. This site is developed as a "node" on the growing framework of public sites across the nation which together constitute the electronic back-bone of the National Spatial Data Infrastructure. See more
Free GIS Data resources for Alabama (Oct 2008)
If you need Alabama GIS data products you won't be inundated with data sources, however, there are several MUST visit web resources where loads of freely downloadable GIS data products can be found. the following are some must bookmark free data sites for the State of Alabama. Read on for tips on locating and downloading free Alabama DRGs, DOQs, aerial photography and more. See more
Wednesday, October 01, 2008
The Missing VMAP 1 Data...
I gotta be honest with you... something that drives me up the wall is when public agencies either move or remove a web service, data product or ?? without any explanation or without any paper trail what so ever. Case in point, I have a popular data tip article on GISuser describing and pointing users to the NIMA VMAP data - theses data are... er, were easily accessible via ftp download from the NGA/NIMA website. Now it turns out that all the pointers to these data are broken and users simply get the familiar error page - try hitting this link and you'll see what I mean http://geoengine.nga.mil/ftpdir/archive/vpf_data/v1053.tar.gz.
If you head off to the VMAP 1 boundaries website, then select an area of interest (click on a yellow box), you are then sent to the raster roam page where you are provided with additional information on these data. Then the problem when you click on the FTP download link to access the .tar.gz file. Links are still live, however, the file with 0 for a file size is no longer available.
On the bright side, VMAP 0 data are available for download and you can also grab the data HERE as SHP files. Again, please don't waste your $$ buying the raw data from an online data "eating" resource like the datadepot or others... the same or even more currrent data are easily available via public sites like this.
Anyone have any ideas about this?? An email sent to the contact person provided has no yielded any response.
See http://geoengine.nga.mil/
If you head off to the VMAP 1 boundaries website, then select an area of interest (click on a yellow box), you are then sent to the raster roam page where you are provided with additional information on these data. Then the problem when you click on the FTP download link to access the .tar.gz file. Links are still live, however, the file with 0 for a file size is no longer available.
On the bright side, VMAP 0 data are available for download and you can also grab the data HERE as SHP files. Again, please don't waste your $$ buying the raw data from an online data "eating" resource like the datadepot or others... the same or even more currrent data are easily available via public sites like this.
Anyone have any ideas about this?? An email sent to the contact person provided has no yielded any response.
See http://geoengine.nga.mil/
Subscribe to:
Posts (Atom)