[GRASS-dev] georectifier - zooming and rectifying

[Michael Barton]

Thanks for the information Jachym


On 1/11/07 2:38 AM, "Jachym Cepicky" <jachym.cepicky at centrum.cz> wrote:

> Hello,
> 
> while I was working with latest georectifier, I came to following
> issues:
>     
>     When I set couple of GCPs and zoom in/out, the GPCs are displayd
>     always "one zoom step too late". It looks like they would use zoom
>     scale from window/previous_zoom.

This should be fixable, though I don't quite understand what you are
describing.

>     
> Second thing: 
>     When I click on the "Rectify maps in the group" button, every window
>     in the gis manager becomes inactive. Strange thing is, that
>     processor does not work really hard (i.rectify is running with about
>     20-50 % load) and the whole process takes too long.
> 
>     When I run i.rectify from CLI, it takes only couple of minutes and
>     the processor is really heated up.
> 
>     It is a bit confusing, just to sit in front of inactive gis manager
>     and to see, that the computer is not really working and wonder, what
>     is happening.

This is baffling since all the georectifier does is run i.rectify for
rasters and v.transform for vectors. Then it copies the created maps into
the current location/mapset. The holdup might be in the latter step, but I
can't say at the moment.

Maybe something I can look at over the weekend.

Michael

> 
>     I do not know, if we can do something with this issue - I beleave,
>     it is something between Tcl and OS. I just ask, if it would be
>     possible. Maybe small information window before calculation start,
>     that "This could take couple of minutes", forking the "i.rectify
>     process" to background, so that rest of the gis.m would be usable or
>     something like this could help to keep the user informed.
> 
> Thanks
> 
> Jachym
> 

__________________________________________
Michael Barton, Professor of Anthropology
School of Human Evolution & Social Change
Center for Social Dynamics & Complexity
Arizona State University

phone: 480-965-6213
fax: 480-965-7671
www: http://www.public.asu.edu/~cmbarton