[Xastir-Dev] problem with drg geotiff maps

[Gerry Creager]

I'll be playing with these when I get back in town.  They're in my PDA, 
so I have no excuse.  I'll see where they line up and what the 
discrepancies are.

gerry

J. Lance Cotton wrote:
> I was playing with the .fgd files from these DRG-E's. I know that they 
> are 7.5 minute 'windows', and the bounds in the FGD don't match with 
> that. I assume that's because they have been re-projected in some sort 
> of rectangular something-or-other. I'm not a GIS person, I just like to 
> look at maps :-)
> 
> What I got was a partial display of the DRG-E, but it did not quite 
> match up, as to be expected.
> 
> In the mean-time, I went ahead and just paid $10 and downloaded some 
> DRGs from www.mapmart.com ($1 per 1:24k DRG, minimum $10) and they work 
> fine. It wasn't *that* much and I got some maps of my parent's homestead 
> as well.
> 
> 73 Lance KJ5O
> 
> Curt Mills, WE7U wrote:
> 
>> On Wed, 30 Oct 2002, J. Lance Cotton wrote:
>>
>>
>> >I don't think what I have are MrSID compressed files. They have the .tif
>> >extension and I can `xview` them with the following output from xview:
>>
>>
>> Ok.  That might be only the Wyoming DRG-E's that use MrSID.  I agree
>> with you.  I already opened them up using XV earlier today and it was
>> happy with them.
>>
>> So it looks like we might have two new formats to support, DRG-E's
>> with and without MrSID compression.
>>
>> Gerry:  Looks like the Texas ones might be ok w.r.t. compression.
>> Other concerns still stand.
> 
>