[Xastir] DRGs in Mac OS X xastir 1.3.1

[Curt, WE7U]

On Tue, 20 Apr 2004, Jason Winningham wrote:

> I'm using xastir 1.3.1 on Mac os X 10.3 (Panther) and having trouble
> getting DRGs to work.  Specifically, every time I try to load one, I
> get the following message in the xterm where xastir was kicked off:
>
> TIFFReadDirectory: Warning,
> /usr/local/share/xastir/maps/al-DRGs/o34086d8.tif: unknown field with
> tag 33918 (0x847e) encountered.
> Problem in translating
> Problem in translating
> Problem in translating
> Problem in translating

That indicates either that your maps are in some other
projection/datum/coordinate system that we don't support with our
geotiff code, or that you've not installed libproj before
libgeotiff, and compiled libgeotiff with libproj support before
installing that.


> I need maps in north Alabama, which means the authority for DRGs in my
> area (Tennessee River Valley) is TVA, not USGS.  Are the maps I get
> from TVA different from the USGS standard DRG?

I suspect so.


> Can someone point me to DRGs that are known to work (especially on a
> Mac os X port) so I can test my build of xastir, et al?

I used to have one example on one of my sites.  Try this:

    http://wetnet.net/~we7u/xastir/maps/geotiff


> Building with AX25.......... : no
> Building with Festival...... : no
> Building with GPSMan........ : no
> Building with ShapeLib...... : yes
> Building with ImageMagick... : yes
> Building with libproj....... : yes
> Building with GeoTiff....... : yes
> Building with GDAL/OGR...... : no
> Building with pcre.......... : yes
> Building with dbfawk........ : no

Yea, you're good for geotiff.


> The online map servers aren't terribly helpful in my case, because we
> are chasing a balloon, and online maps don't work in a mobile
> application. ):  It would be nice if the option existed to save the
> online maps for offline use.  Maybe the tiger code could drop a little
> "map.geo" file in the .xastir/tmp directory with "map.gif" os it could
> be saved for later use? (:

It does...  At least if you use the "Snapshot" function, it'll
create a snapshot.geo to go with your snapshot now.

--
Curt, WE7U			    archer at eskimo dot com
Arlington, WA, USA		http://www.eskimo.com/~archer
"Lotto:    A tax on people who are bad at math." -- unknown
"Windows:  Microsoft's tax on computer illiterates." -- WE7U
"The world DOES revolve around me:  I picked the coordinate system!"