Lee,
Here is one (of many) I use. It's fairly self explanatory. This file is
called tuggeranong.geo
FILENAME tuggeranong.jpg
TIEPOINT 0 0 149.001207 -35.373442
TIEPOINT 5668 3471 149.251204 -35.498439
IMAGESIZE 5668 3471
#
# Converted by Benny's script
#
The IMAGESIZE was found using the "identify" program which is part of
the
Imagemagick suite of tools (I think).
Given you are referencing two points on the map by pixel location, I
can't
see why you absolutely have to use top left and bottom right. I haven't
tested this though as I know the lat/long for the top left and bottom right
of the images I use.
Ian
VK1IAN
A very novice Xastir user.
On Sun, 23 May 2010 07:13:15 Lee Bengston wrote:
> I remember asking that question :-)
>
> -----------------------------------------------------------
>
> From: Lee Bengston <[email protected]>
> Date: Sun, Sep 7, 2008 at 8:28 PM
> Subject: geo files for simple maps
> To: Xastir - APRS client software discussion <[email protected]>
>
>
> Hi All,
>
> Maybe I just got lost in all the details of information in the HowTo:
> Maps and the Readme.maps, but I couldn't find the procedure for
> creating a geo file for a scanned or screenshot based map, i.e. a
> simple JPG, PNG, or GIF. I have a map of a course for a public
> service event that is basically a screen shot of Yahoo Maps saved as a
> JPG. I recall I need the lat/lon of the upper left and lower right
> corners of the map for the geo file, but what else, and what does the
> geo file format look like for this type of map?
>
> Thanks,
>
> Lee - K5DAT
> Murphy, TX
>
> ---------------------------------------------------
>
> From: Alex Carver <[email protected]>
> Date: Mon, Sep 8, 2008 at 2:46 PM
> Subject: Re: [Xastir] geo files for simple maps
> To: Xastir - APRS client software discussion <[email protected]>
>
>
> It's just a simple .geo like the others you've seen.
>
> First line is the keyword FILENAME and then the filename of the image
> Next line is keyword TIEPOINT followed by the pixel x, pixel y,
> longitude, and latitude of the pixel
> Final line is another TIEPOINT for the opposite corner in the same format.
>
>
> ----------------------------------------------------
>
> ---------- Forwarded message ----------
> From: Curt, WE7U <[email protected]>
> Date: Mon, Sep 8, 2008 at 3:54 PM
> Subject: Re: [Xastir] geo files for simple maps
> To: Xastir - APRS client software discussion <[email protected]>
>
> On Mon, 8 Sep 2008, Alex Carver wrote:
> > It's just a simple .geo like the others you've seen.
> > First line is the keyword FILENAME and then the filename of the image
> > Next line is keyword TIEPOINT followed by the pixel x, pixel y,
> > longitude, and latitude of the pixel
> > Final line is another TIEPOINT for the opposite corner in the same
> > format.
>
> Explained a bit in README.MAPS and a bit more extensively in the
> online help in Xastir itself.
>
> Note that the tiepoints do not have to be at the corners, but you
> get a bit more accuracy if they're as close as possible. Pick two
> spots on the map that you know the lat/long of, which are separated
> both vertically and horizontally at much as possible.
>
> --
> Curt, WE7U. archer at eskimo dot com
> 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!"
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