[OKGIS] NAIP 2004 and 2005 County mosaics comparisons

[Mike Sharp]

Greeting Oklahoma GIS Community,
 
We have posted all of the NAIP County Mosaic Orthophotography for 2003, 2004 and 2005 on our ftp server.  In the near future, hopefully, these will be mapped onto the Geo Info/G I Council Data Warehouse but in the meantime if you want to get them now you can go directly to the ftp site at:  ftp://ftp.okcc.state.ok.us/gis/County/  .  I don't know how much traffic our server can stand, so be aware there may be some delays if everyone tries to get these at once.  Be patient.
 

Mike Sharp 
Acting State GI Coordinator 
Director Information Technology 
Assistant Director AML Program 
Oklahoma Conservation Commission 
2800 N. Lincoln Blvd., Suite 160 
Oklahoma City, OK 73105 
405-521-4813 
405-521-6686 FAX 
mikes at okcc.state.ok.us 

-----Original Message-----
From: okgis-bounces at gis.gis.ou.edu [mailto:okgis-bounces at gis.gis.ou.edu]On Behalf Of Troy Frazier
Sent: Monday, March 06, 2006 7:59 AM
To: Oklahoma GIS Community
Subject: Re: [OKGIS] NAIP 2004 and 2005 County mosaics comparisons


Hi everyone,
 
Just for kicks & grins, I compared the 2004 & 2005 aerials for Noble County. The 2005 SID is 160MB while the 2004 is 43MB. I'm guessing that the 2004's have then same 1:60 - 1:80 compression as the 1-meter 2003 and the 2005 currently have a much better compression of around 1:20. If you lokk at the 2004 & 2005 side by side, you will defenately see the different. Comparing 2003 & 2005, at 1"=400' they seem just a clear. You just can't zoom in much more, but the compression rate seems to make a big difference (maybe even more that 1-meter to 2-meter pixel size).
 
 
Sincerely,
 
Troy Frazier
Cartographer
Ad Valorem Division - Oklahoma Tax Commission
(405) 521-3178  or  tfrazier at tax.ok.gov

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