[Xastir] PNG,GIF,TIFF,or JPEG images as maps

[Ian Bennett]

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 <lee.bengston at gmail.com>
> Date: Sun, Sep 7, 2008 at 8:28 PM
> Subject: geo files for simple maps
> To: Xastir - APRS client software discussion <xastir at xastir.org>
>
>
> 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 <kf4lvz at yahoo.com>
> Date: Mon, Sep 8, 2008 at 2:46 PM
> Subject: Re: [Xastir] geo files for simple maps
> To: Xastir - APRS client software discussion <xastir at xastir.org>
>
>
> 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 <archer at eskimo.com>
> Date: Mon, Sep 8, 2008 at 3:54 PM
> Subject: Re: [Xastir] geo files for simple maps
> To: Xastir - APRS client software discussion <xastir at xastir.org>
>
> 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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