Garmin , extracting roads ? - Printable Version
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+--- Thread: Garmin , extracting roads ? (/showthread.php?tid=56958)
Garmin , extracting roads ? - fly_zo - 09.10.2008
Anyone knows "easy" method to get roads as layer ?
Been trying to open .img files (Garmin) but without success ( PS, Tga converter, Img viewer ) ... anyone knows some app. which may do the trick ?
any advice will be most appreciated ....
thanks in advance
Z
Re: Garmin , extracting roads ? - Redwulf__32 - 10.10.2008
fly_zo Wrote:Anyone knows "easy" method to get roads as layer ?Performing a logical AND operation on the map_t pixels with the value 32 (0x00100000) will give you a country road layer, using value 64 (0x01000000) a railroad layer and finally using 128 (0x10000000) a highway layer.
Been trying to open .img files (Garmin) but without success ( PS, Tga converter, Img viewer ) ... anyone knows some app. which may do the trick ?
any advice will be most appreciated ....
thanks in advance
Z
F.ex. Load the map_t file as a layer in your favorite graphics editor (PS, Gimp, ...), make a new layer filled with value 32 (Grayscale) and merge the new layer as "AND". Voil
Re: Garmin , extracting roads ? - fly_zo - 10.10.2008
[quote="Redwulf__32"]
Performing a logical AND operation on the map_t pixels with the value 32 (0x00100000) will give you a country road layer, using value 64 (0x01000000) a railroad layer and finally using 128 (0x10000000) a highway layer.
F.ex. Load the map_t file as a layer in your favorite graphics editor (PS, Gimp, ...), make a new layer filled with value 32 (Grayscale) and merge the new layer as "AND". Voil
- socorrista22198 - 06.11.2008
Hi fly_zo, this is my first post, i hope this help you.
Some time ago i worked with a program that allow to open .img files, IMGTOOL. It