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| GeoCommunity Mailing List |
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| Mailing List Archives |
| Subject: | [gislist] Summary of AUX and RRD file inquiriy |
| Date: |
01/11/2004 10:00:01 PM |
| From: |
Michele Mattix |
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Hello Everyone,
As promised, here's a summary of what I learned about AUX and RRD files. =
First, my original post:
Greetings GISlisters,
>
>I recently received some data via e-mail that I had requested -- the=20
>Colorado Basinwide Vegetation data. I received a zipped file and when =
I=20
>unzipped it, it contained 2 files: purgatoire.aux and purgatoire.rrd. =
The=20
>person who sent it to me said that the data are coverages (satellite=20
>images).
>
>I'm using ArcGIS 8.3 desktop and I can find no utility to convert these =
>kinds of files. They do not even show up in ArcCatelog. Am I missing=20
>something? What do I need to do to turn these files into the data I =
need?
>
>Thanks in advance -- and I will summarize all responses.
>
I received responsed from Tina Brister, Margaret Gooding, Dean Carstens, =
and Vassil Vassilev. Thanks to them, I now realize that I'm missing a =
file to make it all work. Here's the scoop:
the RRD and AUX files are supporting files for ERDAS software. RRD =
files (reduced raster display) store pyramids for the image/data which =
helps the image display faster. AUX files support TIFF files and store =
georeferencing, projection, statistical, etc. data.
I seem to be missing either a *.tif file or a *.img file -- raster =
formats for ERDAS -- to make it open in ArcGIS.
Cheers,
Michele Mattix
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