[Mapserver-users] Digitizing maps

[Hankley, Chip]

Paul...

You would typically set your reference points before you start digitizing...
by selecting certain parts of the image (off of which you are digitizing)
and setting those to some known coordinate. This really has nothing to do
with the 'projection object' in your other mapfile... it's simply a means of
locating your data in any coordinate system.

I'm copying the list on this since others might have some suggestions for
you. You are really in the realm of data creation... not really MapServer
per se. I use commercial GIS packages to do these types of things, but other
folks on the list might have some suggestions.

Chip

> -----Original Message-----
> From: Paul Dymecki [mailto:millardymecki at sympatico.ca]
> Sent: Monday, February 17, 2003 2:01 PM
> To: Hankley, Chip
> Subject: Re: [Mapserver-users] Digitizing maps
> 
> 
> Well i guess not,
> i just found out that the extents on the map file i want to 
> add to are in
> metres whereas the extents  in the generated(and 
> georeferenced) shp are in
> pixels, so that is definitely a prob.  I was just thinking 
> the mapfile i'm
> adding to has a projection object, and this is the projection i tried
> georeferencing to.  Does that sound right?
> thx,
> Paul
> ----- Original Message -----
> From: "Hankley, Chip" <Chip.Hankley at GASAI.Com>
> To: "'Paul Dymecki'" <millardymecki at sympatico.ca>
> Sent: Monday, February 17, 2003 2:50 PM
> Subject: RE: [Mapserver-users] Digitizing maps
> 
> 
> > Paul...
> >
> > No, I'm afraid I've never actually used it... thought about 
> it once or
> > twice.
> >
> > Not sure what you mean... you're able to display it in MS, 
> but not display
> > it in another Mapfile? Are you sure that you were able to 
> effectively and
> > accurately transform the digitized file into a real 
> coordinate system (the
> > same one as in the other mapfile)?
> >
> > Chip
> >
> > > -----Original Message-----
> > > From: Paul Dymecki [mailto:millardymecki at sympatico.ca]
> > > Sent: Monday, February 17, 2003 1:48 PM
> > > To: Hankley, Chip
> > > Subject: Re: [Mapserver-users] Digitizing maps
> > >
> > >
> > > Hi Chip,
> > >      I was wondering if you've used mapscan at all?  I've used it
> > > successfully to digitize an image and display it in
> > > mapserver, but am having
> > > trouble when i try to add it to another map file.
> > > thx,
> > > Paul
> > > ----- Original Message -----
> > > From: "Hankley, Chip" <Chip.Hankley at GASAI.Com>
> > > To: "'Paul Dymecki'" <millardymecki at sympatico.ca>
> > > Cc: "MapServer List (E-mail)" <mapserver-users at lists.gis.umn.edu>
> > > Sent: Monday, February 10, 2003 1:48 PM
> > > Subject: RE: [Mapserver-users] Digitizing maps
> > >
> > >
> > > > http://www.ons.dz/unfpa/software.htm
> > > >
> > > > Paul,
> > > >
> > > > You might want to look at this URL. The United Nations
> > > makes this software
> > > > available... it's supposed to provide an interface for doing
> > > RASTER->Vector
> > > > conversions.
> > > >
> > > > Chip
> > > >
> > > > > -----Original Message-----
> > > > > From: Paul Dymecki [mailto:millardymecki at sympatico.ca]
> > > > > Sent: Monday, February 10, 2003 12:38 PM
> > > > > To: Mapserver-users at lists.gis.umn.edu
> > > > > Subject: Fw: [Mapserver-users] Digitizing maps
> > > > >
> > > > >
> > > > >  Hi Randy,
> > > > >      I was just thinking that a world file will probably not
> > > > > do me any good,
> > > > > as i'm trying to add layers on top of a tiff file.
> > > > >  So unless i make them  transparent or something i'll need
> > > > > vector.  I know
> > > > >  there must be some algorithm for setting control points and
> > > > > mapping them to
> > > > >  a known lat/long, so I'm looking at doing this in python
> > > > > maybe, possibly.
> > > > >  thx,
> > > > _______________________________________________
> > > > Mapserver-users mailing list
> > > > Mapserver-users at lists.gis.umn.edu
> > > > http://lists.gis.umn.edu/mailman/listinfo/mapserver-users
> > >
>