[Manifold-l] Does exporting a surface actually work?

[Michael Sumner]

Hi, I've had a lot of trouble finding an export format for surfaces that
works in certain situations.  I'm sure this is as much a limitation of
format vagaries and nuances of other programs as much as it is a Manifold 
problem 

I usually revert to Raw Binary and then use another program to create a
GeoTiff (since I can see exactly what is going on). 

You can't currently export a surface to GeoTiff from Manifold, you end up 
with an image (I think that's right, I might be slightly wrong).  

I've had success with BIL, but that's just Raw Binary plus auxiliary text 
files so it's pretty easy - missing values can be problematic. 

Otherwise I use SDTS and convert it from that with GDAL. 

I've requested more exports for GeoTiff and more functionality for them
in general - that format at least seems to have wide support. 

I would suggest finding a format that reliably works for GDAL via
FWTools, and create a format for your friend that way - you still have
the problem of requiring his testing of the result though. 

Can you provide examples or workflow that result in surfaces that failed
to work for your friend?

BTW, Georeference.org has far more traffic these days for Manifold
discussion, so I'd encourage you to use that. 

Cheers, Mike.




==============Original message text===============
On Tue, 29 May 2007 8:56:06 +1000 Steven Wilson wrote:


I've spent two days with a arc/info analyst trying to provide him with a
readable surface I created in Manifold. Here's what he reported to me:

-The .bil file imported inverted from north-to-south with only one grid value
-The import function choked on the .e00 file
-The geotiff has lovely stiped artefacts
-The .grd file can't be added to his project.

Without Arcinfo I have no way of diagnosing these problems. I have an old 
copy of arcview 3.2 and I can confirm that the geotiff in fact has
artefacts, the import71 program will not translate any .e00 I've created
in Manifold, and the SDTS raster-to-grid tranlator chokes on an exported
SDTS from Manifold.

This has been a frustrating and embarrassing exercise and I'd like to
know if anyone has had similar experiences and has any suggested work-arounds.

Steve


_______________________________________________
Manifold-l mailing list
Manifold-l at lists.directionsmedia.net
http://www.directionsmedia.net/mailman/listinfo/manifold-l
===========End of original message text===========



If it wasn't backed-up, then it wasn't important. ~ Anon sysadmin

Mike Sumner (Phd. Candidate)
http://www.antcrc.utas.edu.au/~mdsumner/ http://www.zoo.utas.edu.au/awru/  IASOS/AWRU
University of Tasmania
Private Bag 80
Hobart Tasmania 7001
AUSTRALIA
Email: mdsumner at utas.edu.au 
Phone: 03 6226 1752 (W)
       0408599921   (M)
Fax:   03 6226 2745