Docstoc

Optimizing and Loading images into raster dataset

Document Sample
Optimizing and Loading images into raster dataset Powered By Docstoc
					Optimizing and Loading images into a raster dataset
Discussion with James Nield, ESRI
August 17, 2007

   1. Analyze in Oracle while loading
   2. Build Pyramids
   3. Analyze again


Analyze in Oracle the Business table and the Block table
SDE_Blk_{id} id is the rasterband ID.

Properties set the XY extent for the raster dataset

Catalog vs Dataset – for a catalog you have to maintain an additional
Attribute column

With a catalog you can use a timestamp for the attribute and you can query the attribute
column to show progression


Extents are in Hennepin County Coordinate system units

Bridge extent
minx 534340.46 miny 167220.87
maxX 537484.47 maxY 170039.13

Mpls Imagery Extent
523385.28, 156314.38
552312.22 182412.5

CHOOSE MATCH FOR COLORMAP MODE
Still black and white images so I rebuilt the raster dataset and changed the number of
bands to 3 instead of 1.

Tasks

Load images – took 40 minutes
Analyze – took 1 minute
Build Pyramids – took 3 seconds because it was done when the images were loaded
Grant Privileges to imsuser and ims_i35wbridge
View in mxd to verify success
Add to mxd
Update map service

				
DOCUMENT INFO
Shared By:
Categories:
Tags:
Stats:
views:1
posted:11/24/2011
language:English
pages:2