[GRASSLIST:136] Re: Considering replacing ESRI

David Finlayson dfinlays at u.washington.edu
Thu May 22 11:40:40 EDT 2003


I don't think that grass can rotate rasters (ESRI can).

I tried to get around this a few months ago by writing a Python script 
that did the work. Unfortunately, it isn't very efficient and can take 
20 mins or so to rotate large grids. If you are interested I can send 
you the script.

David Finlayson

David Strauch wrote:

> On Wednesday, May 21, 2003, at 04:12 AM, Alexander Pucher wrote:
>
>> I still ask myself, what can ArcInfo do for me that GRASS can't...?
>
>
> Okay, how about orienting maps to other than true north (which I think 
> is called "false northing")?
>
> I had limited experience with ArcInfo etc 10 years ago, but I remember 
> that I could reorient maps, which was very useful. I'm currently 
> looking at a mountain range which trends NW-SE, and if I could orient 
> my work that way I believe it would be both easier to look at and 
> faster to work on, as there wouldn't be any processing time devoted to 
> areas outside my area of interest (i.e. the SW and NE corners of my 
> current region).
>
> I'm still a newbie to GRASS and have been hoping I would come across a 
> way to do this, but lately I have begun to suspect that, as it 
> appears, GRASS lacks this capacity. Can someone prove me wrong?
>
> yrs,
> David
>





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