[GRASSLIST:1536] Re: DOQQ UTM to SPCS from tiff+tfw files
Eric G. Miller
egm2 at jps.net
Wed Feb 28 02:13:10 EST 2001
On Tue, Feb 27, 2001 at 02:47:06PM -0500, mberglund wrote:
> Hello all,
> I am a newbie, but have looked long and hard for a direct answer to what
> seems to be a simple problem.
> I would like to take a series of doqq's which are in tiff/tfw file and UTM
> projection and:
> 1: import them into grass
> 2: reproject the doqq to SPCS from UTM
> 3: overlay a shape file of a grid system(in SPCS)
> 4: divide each portion of the doqq according to the grid
> 5: export each chunk into the same tiff/tfw combination
> Basically, I want to create chucks along section lines of the doqq.
> I started to just try and import the 128M and my machine (PII/300
> 96M/Ram) ran for days (3) and ended up locking up, this was on grass5.x
> I am wondering if there is a memory issue with a file of this size. I
> noticed that as time grew on ram and swap were both growing boundlessly,
> but I was asleep when the final crash occured.
> In any event, am I going to need weeks and huge machines to do this?
> And is there a simplified run down of how this can be accomplished(most
Looks like a memory leak was introduced when tile support was added to
r.in.tiff. Memory allocation should essentially remain constant. Will
try to fix this...
Eric G. Miller <egm2 at jps.net>
More information about the grass-user