[GRASS-dev] i.rectify still chokes on @mapset

[Markus Neteler]

On Wed, Apr 15, 2009 at 5:04 PM, Michael Barton <michael.barton at asu.edu> wrote:
>
> On Apr 15, 2009, at 12:10 AM, Markus Neteler wrote:
>
>> grep mapset gui/tcltk/gis.m/georect.tcl  | grep -v '#'
>>           set cmd "i.target group=$GRMap::xygroup location=$currloc
>> mapset=$currmset"
>>           -title [G_msg "Select mapset of raster to georectify"] \
>>   Button $row.a -text [G_msg "1. Select mapset"] \
>>
>> Why
>> $GRMap::xygroup
>> ?
>
> This calls a variable (xygroup) that identifies the group file.
>
> I think I see what the problem is, and I still don't think it is the GUI,
> especially be cause it causes a problem in both TclTk and wxPython.
>
> Sometime (recently??), i.rectify has been changed so that it now accepts map
> names as input; it used to only accept a group as input. The TclTk and
> wxPython GUI's only send a group to i.rectify, not a map or list of maps.

i.rectify was changed to use G_parser() in June 2008. I didn't check
in detail but the interface is as before.

> Isaac, take a look at the relevant group file and see if it has the mapsets
> appended to the map names AND see if it has incorrect information like
> mapsets appended twice. Then run i.rectfy with group input, not map input.
> Also, try i.rectify with a map input that does use @mapset. I'm betting that
> it chokes on the first at least and either i.group is making the group wrong
> or i.rectify has trouble with groups in which the @mapset is part of the
> group name.
>
> A more general question Markus (or others) is which direction is i.rectify
> going now: inputting groups or just inputting maps? There has been off and
> on discussion about groups that I've only partly followed.

Mhh, personally I don't recall any discussion.
Why changes? we cannot, at least in the GRASS 6 version.

> I seem to remember that subgroups are now gone.

They are pretty alive :)

> It would simplify the GUI work some if
> we could skip the group creation and just rectify a map or list of maps. The
> group is there to rectify a batch of multiband imagery files. Is this still
> the way to go? Maybe we could just leave the more sophisticated way of
> running i.rectify (e.g., on groups) to the module itself and not worry about
> implementing groups in the GUI.

I am not sure but there should be no interface differences between 6.0 and 6.4.

Markus