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Image with *.rrd format ? [message #62127] Wed, 27 August 2008 03:38 Go to next message
d.poreh is currently offline  d.poreh
Messages: 406
Registered: October 2007
Senior Member
Folks
Hi
I have some images with .rrd format (one image consist of 3 file: rrd
+aux+dt2). Does any one have experience with this kind of data, that
how we can import it to IDL (or ENVI)?
Any help?
Cheers
Dave

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Re: Image with *.rrd format ? [message #62202 is a reply to message #62127] Thu, 28 August 2008 00:45 Go to previous message
d.poreh is currently offline  d.poreh
Messages: 406
Registered: October 2007
Senior Member
On Aug 27, 6:12 pm, Jean H <jghas...@DELTHIS.ucalgary.ANDTHIS.ca>
wrote:
>> I don't think the rrd file is obligatory (but I'm not a specialist).
>
> it is not. I believe it is only used in ArcGis...
> Jean
Thanks a lot.
Cheers

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Re: Image with *.rrd format ? [message #62208 is a reply to message #62127] Wed, 27 August 2008 09:12 Go to previous message
Jean H. is currently offline  Jean H.
Messages: 472
Registered: July 2006
Senior Member
> I don't think the rrd file is obligatory (but I'm not a specialist).

it is not. I believe it is only used in ArcGis...
Jean

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Re: Image with *.rrd format ? [message #62216 is a reply to message #62127] Wed, 27 August 2008 07:33 Go to previous message
Wox is currently offline  Wox
Messages: 184
Registered: August 2006
Senior Member
On Wed, 27 Aug 2008 03:38:35 -0700 (PDT), d.poreh@gmail.com wrote:

> Folks
> Hi
> I have some images with .rrd format (one image consist of 3 file: rrd
> +aux+dt2). Does any one have experience with this kind of data, that
> how we can import it to IDL (or ENVI)?
> Any help?
> Cheers
> Dave

This is Elevation Data no?

dt2: Digital Terrain Elevation Data (level2)
rrd: Reduced Resolution Dataset (pyramid file which helps the image
display faster)
aux: Auxiliary file (color map, coordinate system, projection
info,...)

This might help to decode the dt2 file:
http://en.wikipedia.org/wiki/DTED
http://www.nga.mil/ast/fm/acq/89020B.pdf

For the aux file, I don't know:
http://tinyurl.com/5unxyj

I don't think the rrd file is obligatory (but I'm not a specialist).

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Re: Image with *.rrd format ? [message #62220 is a reply to message #62127] Wed, 27 August 2008 07:12 Go to previous message
Vince Hradil is currently offline  Vince Hradil
Messages: 574
Registered: December 1999
Senior Member
On Aug 27, 5:38 am, d.po...@gmail.com wrote:
> Folks
> Hi
> I have some images with .rrd format (one image consist of 3 file: rrd
> +aux+dt2). Does any one have experience with this kind of data, that
> how we can import it to IDL (or ENVI)?
> Any help?
> Cheers
> Dave

I found this: http://tinyurl.com/5kujdn It might help - you might
have to build your own.

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