[Geotiff] Linear Units of Projections Parameters

[pw]

I've only ever used the ENVI freelook once.
We actually had ENVI before I ever saw freelook.

link for freelook:
http://rsinc.com/download/download.asp?searchstring=FreeLook&ProductVersion=All+Products

Perhaps a few specific tests would resolve the question.
If you have some known files with known locations,
these questions can be tested.

Just need a download link(s) and my lunch hour...

I don't have ArcGIS. I do have ArcExplorer which loads
images using the same libraries...

Sorry about the other issue. I guess data is already mapped
if it's in GeoTiff format, so the idea of pixel dimensions
is not really relevant. Too much strobing at the hyperspectral
I guess....


Peter


Frank Warmerdam wrote:
> pw wrote:
> 
>> Hello,
>>
>> That's a good question. I don't think I've really taken much notice
>> until this question was posed.
>>
>> I use primarily ENVI (RSI) and Geomatica (PCI) and as far as I
>> remember I have never had a GeoTiff image that wasn't in a meter
>> based projection.
> 
> 
> Peter,
> 
> It would be helpful to know specifically if ENVI or Geomatica handle
> the false easting and northing properly.  I wrote the original
> Geomatica GeoTIFF handling, but can't recall the details.  I suspect
> I assumed it was in meters since that is what the internal GCTP
> code at PCI looks for.   Actually, I should be able to check this with
> the PCI free viewer.  Is there still an ENVI free viewer?
> 
> Reports indicate ArcGIS and Imagine assume the false easting and northing
> in GeoTIFF are in meters.  I'm not sure if this might be my fault or not.
> I did some work on that GeoTIFF code too, but I don't *think* I worked on
> the projections details.
> 
> The rest of your email seemed tangential to the issue at hand.
> 
> Best regards,