I agree. Pictures (especially the remote sensing types) do
contain data and they are very common sources for GIS
information. MapInfo's MIG format could be a start for a tool
that supports these, or likewise Vertical Mapper could add some
functionality to their product (after all, they already support
the concept of a "character-based" grid or *.GRC files, which is
basically the final result of a raster to vector operation.)
But in the meantime, you don't have to go to ESRI to get what you
want. I've been using Bob Edwards' "Region Extraction Tool" at
http://members.aol.com/MapTools/rtv21a.html embedded in an
application I've been building, and this tool works great. It's
affordable, fast and results in perfectly edge-matched polygons.
We're using it to classify soil types in an agricultural
appliction, and it has been doing the job very well.
- Bill Thoen
Richard Greenwood wrote:
>
> >Damian has a reasonable request and one that seems to identify somewhat of
> >a weakness in MI, i.e., ability to do something with raster images.
>
> >I use MI and Vertical Mapper. Vertical Mapper uses is quite flexible with
> >grid (grd & grc) files.
>
> I suggested to VM that they provide an image import function in their
> software, and they blew me off with a statement to the effect that "we only
> work with grids that have data, and images don't have data, because they
> are just pictures". Which seems pretty dumb; like remote sensing and image
> analysis are just "pictures"? Duh.
>
> So I retreated to the ArcView camp. ArcView Image Analyst allows you to
> create a grid from an image file. You can them export the grid from Spatial
> Analyst as ASCII, and import it into VM, or you can use Spatial Analyst to
> create vector polygons (shape files) which can be imported into MI.
>
> I think MI & VM are so superior to ArcView & Spatial Analyst that I hate
> point out any areas of superior functionality. But VM snobbed me off, and I
> don't think MI reads this list.
>
> Rich
>
> Richard W. Greenwood, PLS
> Greenwood Mapping, Inc.
> [EMAIL PROTECTED]
> (307) 733-0203 fax: 733-4018
> http://www.GreenwoodMap.com
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