[GRASSLIST:5000] Re: [GRASS5] v.patch in 5.7 problems

[Radim Blazek]

Maciek Sieczka wrote:
> From: "Radim Blazek" <blazek at itc.it>
> 
>> Maciek Sieczka wrote:
>>
>>> grass57_exp_2004_11_13
>>>
>>> After merging a vector consisted of points with a vector consisted of 
>>> lines using v.patch I get a file where some lines and points are 
>>> assigned the same "field:" and "category:". It unables me create a 
>>> database which would assign the elevation values to both points and 
>>> contour lines at one time! And I need it to be done so in order to 
>>> interpolate this "merged" elevation information in one turn with 
>>> v.surf.rst. Both input files had a nice database.
>>>
>>> BTW - why doesn't the v.patch create a merged database for the output 
>>> file while in 5.5 the v.patch copies all the input's cats and labels 
>>> to the output?
>>>
>>> Please somebody answer and let me know if it's a bug worthy of a bug 
>>> report.
>>
>>
>> It is wish report.
> 
> 
> Thanks for the reply.
> 
> After re-thinking my problem I'd say that it should rather be a regular 
> bug - in my opinion in one vector file there may not be two diffrent 
> features having the same "field:" and "category:" which happens when 
> using v.patch. Am I wrong?

Both can be useful, preserve cats or assign new unique cats.
Ideally v.patch should support both. A Bug is if it does not do what it
should - what is written in man. A wish is if a feature is missing.

Radim