Re: [OpenMap Users] RPF and VMAP Descrepancy

From: Don Dietrick <>
Date: Sun, 18 Dec 2005 09:24:23 -0500

Hi Michael,

I think it's still a good, lightweight data set useful for the
overview image, as it's a third of the size of the cntry02 data set.
 From that point of view, it's probably worth fixing, although it it
missing countries that have been added to the world community in the
last 10 years.

- Don

On Dec 18, 2005, at 5:44 AM, Dr. Michael Paus wrote:

> Don Dietrick wrote:
>> If you are looking at the VMAP browse level coverage, I think
>> that data
>> is in a different datum, so you will see it off by a bit. It's
>> better
>> to use the cntry02 data that's in the latest version of OpenMap.
> It is definitely better to use the cntry02 data because the
> difference between
> the dcwpo-browse data and the cntry02 is more than just a bit. At
> least it is
> more than I would like to swim. I have attached a screen-shot which
> shows the
> offset. (The redish color represents the dcwpo-browse data.) To my
> opinion the
> dcwpo-browse data is completely corrupted and should be fixed or
> discarded in
> order to avoid any serious damage in case someone is using that in
> a real
> application.
> Michael
> <cntry02_vs_dcwpo-browse.jpg>

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Received on Sun Dec 18 2005 - 09:26:01 EST

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