[OKGIS] ArcGIS 9.2 and 2006 NAIP County Mosaic Headaches

[David W. Wheelock]

ArcGIS 9.2 has problems displaying rasters.  Some may be bug-related and
some new-methodology-related.  Regardless, this affects display of the
new 2006 NRCS NAIP county mosaic aerial photographs that just became
available.

I've been getting my copies from the Conservation Commission FTP site.
They've been working to put them out and have 74 of 77 counties
available for download.  I've gotten them all but have found the
following problems that appear to be 9.2 related.

Of the 77
*	3 Counties:  Mayes, Latimer, Le Flore   
*	Not yet available on the OCC server.
*	3 Counties:  Cherokee, Delaware and Pushmataha
*	Display at the wrong location, because the units display as
fathoms when you look in layer properties in 9.2.  In 9.1 the units
display as meters and the map displays at the correct location.  If you
go into ArcCatalog and reset the Spatial Reference to UTM-15 NAD83 in
meters, that fixes them.
*	9 Counties
*	9.2 claims they have no georeferencing information and will not
display them in combination with other data, but 9.1 finds it and
displays them just fine.  These are all the ones that cross the UTM zone
boundary between zones 14 and 15.  To fix them the spatial reference for
the following counties to the indicated UTM zone in NAD83.
*	Zone 14
*	Atoka
*	Bryan
*	Hughes
*	Okfuskee
*	Osage
*	Zone 15
*	Okmulgee
*	Pittsburg
*	Tulsa
*	Washington
*	Also, in a matter unrelated to ArcGIS 9.2, Comanche County is
missing a patch of data about 3 miles wide by 8 miles high, in the NW
corner of the county.

Regards,
David

David Wheelock     Application Specialist     david at oda.state.ok.us

Oklahoma Department of Agriculture, Food and Forestry
2800 North Lincoln Boulevard
Oklahoma City, OK 73105-4298
Phone: (405) 522-5477 FAX: (405) 522-3590
http://www.oda.state.ok.us

"We are usually convinced more easily by reasons we have found
ourselves, 
than by those which have occurred to others."
Pascal

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