Re: [OpenMap Users] Help with cusom application

Hi Michael,

The error area looks like a edge that has been closed into an area,
with the unexpected closing edge causing the reversal of fill areas.
We usually see this effect if you allow an edge feature to have a fill
color.

- Don

On Jun 1, 2004, at 3:33 PM, Michael Harrison wrote:

> Our application uses OpenMap to create raster files of an area. The
> format of the raster file is that the region is broken up into cells
> and an integer value is written to the cell to define its feature
> type.
>  
> With Don's help, I was able to extend VPFFeatureGraphicWarehouse and
> create the raster files.  However, there are occasional errors that
> occur.
>  
> The attached file, maps.pdf, illustrates an example of an error. This
> file shows the image generated by OpenMap and the generated raster
> file as viewed by matlab. ( Please excuse the fact that the colors do
> not match. ) The "Error Area" is a triangular region where the image
> is essentially reversed.
>  
> I am continuing to debug this but I thought that I would see if anyone
> in the openmap community has seen a similar effect. Thanks for any
> pointers.
>  
>    Regards,
>    Mike Harrison
>  
>  
>  
> ===============================
> |  Mike Harrison  
> |  MIT Lincoln Lab     
> |  244 Wood St.  S2-256
> |  Lexington MA  02420-9185
> |  mhh@ll.mit.edu              
> |  (781) 981-3513              
> |  (781) 981-5255 FAX           
>  ===============================
> <maps.pdf>

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Don Dietrick, dietrick@bbn.com
BBN Technologies, Cambridge, MA
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

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