Map packs a pain..Need to be able to select tile by tile and/or at least by County.
We need all of WV aerial and/or satellite imagery on hard drive in event of disaster (internet not available). In previous versions you could select individual image "tiles" to down load. You could then seamlessly scroll n/s/e/w. With Map Pack, to get the whole state, the select tool which then gives you half of all the surrounding states that we don't need. It won't load - to much data....It would be nice to be able to select the tiles by County to get the whole state. It would also be nice to have the aerial and/or satellite images on DVD/CD. It takes 2 days or more to download over the internet even with the so called high speed internet that is available in Tyler Co WV. To zoom in and get multiple map packs, you then get a lot of duplication with overlapping map packs. Maybe I don't fully understand how Map Packs are supposed to work - and for that I blame the documentation. Can multiple maps packs be accesses by a single project and/or opened automatically as you scroll from the extent of one to another?
Al Tuttle, Volunteer with Tyler County WV OEM - SAR/CERT teams
"Can I then delete the folders containing the "tiles" to free up hard drive space?"
TNP handles all the hard drive management itself. Deleting map tiles outside of TNP will end up corrupting the map engine - which can only be reset by clearing the entire cache. That said, TNP is smart about disk space usage, and does not use its temporary map cache for any map tiles already downloaded into MapPacks.
Follow up question re MapPacks and Tiles. Once I download the MapPacks I need with version 11.1 (my county, Fresno, CA is 6,000 square miles) can I then delete the folders containing the "tiles" to free up hard drive space?
Version 11.01, released 2/13/17, allows the creation of MapPacks of 7000 square miles at a display scale of 1:4,514. This will allow TNP to obtain a county-size MapPack in a single download (for reasonably-sized US counties) an provide a display resolution better than what was possible in TNP 10.
Further MapPack enhancements are planned.
Because most of the map types available in TNP 11 do not rely upon a USGS-based grid, it is no longer feasible to provide downloads on a "tile" basis. Likewise, because of the massive, ever-changing amounts of map data, it is not practicable to offer anything other than the non-traditional USGS map types on DVD.
That said, creating multiple MapPacks does not cause extra duplication. You are simply defining more area (and scales, and map types) to remain available when TNP is offline. As with photos copied to the hard drive in prior versions of TNP, a MapPack is project independent - and are automatically accessed when the Internet is not available.
I think you'll find this piece of documentation quite helpful:
Finally, we are working on a new update to TNP, which will allow a 10x increase in the size of a MapPack. This will allow almost any county in the US to be downloaded at a minimum display scale of 1:4514. Look for this in the coming weeks.