[GRASS-dev] running v.surf.rst from GUI

Michael Barton michael.barton at asu.edu
Sun Mar 8 13:26:48 EDT 2009

I agree with you Maris. How to open ticket? Where would this go?


On Mar 8, 2009, at 4:58 AM, Maris Nartiss wrote:

> Hello Michael and others,
> IMHO -z is the right way to go. It would be nice to open ticket for
> such change and list affected modules to remember this idea.
> My proposal: add -z == layer=0 to 6.x and replace layer=0 with -z in  
> 7.x
> Maris.
> 2009/3/8, Michael Barton <michael.barton at asu.edu>:
>> One issue that has already come up in another module (v.surf.bspline)
>> is using layer=0 to select the z values for interpolation. This is a
>> shortcut that is not really correct. Vector layers must be in the
>> range of 1-n. There is no layer 0. This is a problem for the
>> autogenerated GUI dialogs. All layer arguments must be treated the
>> same way. In most cases, layer=0 is meaningless and generates an
>> error. However, in a few modules, layer=0 is a shortcut for using the
>> z value for interpolation. We cannot have it both ways in an
>> autogenerated GUI.
>> My suggestion is to add a -z flag to indicate that the z-coordinates
>> will be used. This would override any other data used for z-
>> coordinate. Then layer arguments could remain at 1-n for all modules.
>> Michael
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