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/
Wednesday, October 01, 2008
The Missing VMAP 1 Data...
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19 comments:
hmm, I guess we should start digging into vmap1 too...
The problem goes beyond VMAP1.
The TPC & ONC products are missing too. I've tried to email the contact person before didn't get a response either.
BTW Several months ago I've downloaded all the VMAP1 tiles. Any one got any ideas were I can post them?
I think we can put them online, like we did with vmap0, I can't find my copy here, but they were public domain too, right?
Yes
I can't find ouru copy of the data anywhere, can you share yours?
No problem.
I'm off for a vacation for the next two weeks. When I get back I'll contact you via e-mail to coordinate how to share the data.
No, not all VMAP1 data is public domain.
http://en.wikipedia.org/wiki/VMAP0#Debate_about_availability_of_data
See public domain datasets description from mapability.com website:
http://www.mapability.com/info/vmap1_download.html
gdwiz: are you back?
I'm back from vacation, but was flooded with work in the last couple of weeks.
A few more weeks and I'll be up on my feet again to start posting the VMAP1 data.
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After all this time, it looks like the VMAP1 data is now available to download again! Can you update your post to reflect this?
Thanks for another interesting and useful piece of knowledge !
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