[Qgis-user] Reading .img - .rrd

David Fawcett david.fawcett at gmail.com
Tue Dec 25 19:01:31 PST 2012


If I remember correctly, both ESRI software and GDAL-based software can
create .rrd files, but they are not interchangeable.  If you think that
this might be the problem, move the .rrd files to a different directory or
rename them.

David.

On Tue, Dec 25, 2012 at 8:00 PM, Randal Hale <
rjhale at northrivergeographic.com> wrote:

> The img is the main image - the .rrd is a reduced resolution dataset (an
> external pyramid layer).  You shoudl be able to open them as Erdas Imagine
> Images.
>
> Are these images digital elevation models?
>
> Randy
>
>
> On 12/25/2012 07:17 PM, adolfo wrote:
>
>> HI:
>>
>> I just downloaded QGIS and I canĀ“t read some digital maps given by a
>> friend
>> in .img & .rrd formats. They are listed under ERDAS format read by QGIS
>>  but
>> in mi ignorance they show only as a black square. Firts they opened as a
>> NERO image files (as in files data collection under one file.)
>> Any help will be much appreciated
>>
>> Adolfo
>> Pucon, Chile
>>
>>
>> <http://osgeo-org.1560.n6.**nabble.com/file/n5024576/IMG_**0107.jpg<http://osgeo-org.1560.n6.nabble.com/file/n5024576/IMG_0107.jpg>
>> >
>>
>>
>>
>> --
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>
> --
> Randal Hale, GISP
> North River Geographic Systems, Inc
> http://www.**northrivergeographic.com<http://www.northrivergeographic.com>
> 423.653.3611 rjhale at northrivergeographic.**com<rjhale at northrivergeographic.com>
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> http://about.me/rjhale
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