Thanks Denis.
I see in the Delphi 5 package there is a catalogue, and in this there is an
OCX advertised for this kind of thing. I have down loaded a demo, but
haven't run it yet. I would really like to work with native Delphi Code
though. Black boxes area a little scary to me.
Cheers,
Tony.
-----Original Message-----
From: Dennis Chuah <[EMAIL PROTECTED]>
To: Multiple recipients of list delphi <[EMAIL PROTECTED]>
Date: Wednesday, 6 October 1999 8:45 AM
Subject: RE: [DUG]: Mapping and GPS
Tony,
Hi. Most maps are vector based and are digitised rather than scanned. Back
in the days of VB3, I worked with a map VBX component. It supports layers
and each layer can either be bitmap or vector. I am thinking if you use
this component, one layer can be the scanned bitmap, one can be the
co-ordinates, and another layer used to plot the current position. Later,
they produced a 32-bit OCX version for VB4/VB5. Can't remember the name of
the company - I haven't worked with VB for a long time now.
Dennis.
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On
> Behalf Of Tony Blomfield
> Sent: Tuesday, 5 October 1999 22:26
> To: Multiple recipients of list delphi
> Subject: [DUG]: Mapping and GPS
>
>
> HI.
> I have an urge to write my own GPS plotter software. This is
> purely a hobby.
>
> I am interested in taking a paper map, and scanning it in,
> then writing some
> picture clean up and documenting stuff. I also need to figure
> out how to map
> the lat long coordinates on to the image, which map
> projections to use etc
> Tec. I suppose I will then store the images in an IB
> database, for later
> retrieval. The next step is to bring in the NMEA message from
> the GPS and
> plot the real-time coordinates on the picture. Hopefully this part is
> straightforward. It is the picture conversion clean up and coordinate
> mapping that has me stymied.
>
> If anybody knows of any components I should look at, or can
> point me at any
> knowledge base on the subject, I would be grateful.
>
> TIA,
>
> Tony.
>
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