[GRASS-dev] creation of turntable

[Markus Metz]

Moritz Lennert wrote:
> On 30/09/13 09:45, Štěpán Turek wrote:
>>
>> Hi,
>>
>> working on integration of turns support into GRASS 7 I see two
>> possibilities how to integrate creation of the turntable.
>>
>> New module v.net.turntable can be added,which will manage creation of
>>
>> the turntable.
>>
>> There already exists v.net module which is doing maintenance and
>> preparation of a network for a network analysis. Creation of the
>> turntable can be considered also like preparation of network for
>> analysis. Also in future it would be good to add into connect operation
>> support for modification of the turntable. And this will require
>> extension of the v.net interface for the turntable support.
>>
>> Suggestion of interface changes of v.net module:
>> operation=turntable - create turntable (what v.net.turntable do)
>> tlayer and tuclayer - two layers where information about turns is stored
>> (for description see [1])
>> - these two parameters would need to be added into v.net even if
>> v.net.turntable would exist in order to be the connect operation able to
>> adjust the turntable. Adding of these parameters could be avoided if
>> another connect method would be implemented into v.net.turntable, but it
>> would be probably quiet confusing for user.
>>
>> -t flag if this flag would be attached, the connect method would work
>> with the turntable support
>>
>> On the other hand v.net module interface will become even more complex
>> and it can become difficult to use by some users.
>
>
> Even if the complexity might be increased (I don't find v.net _that_ complex
> at this point), I would go for the integration of turntables in v.net. It
> seems the logical place for everything concerning network preparation and
> maintenance. If complexity really becomes a problem, there is always the
> option of creating wrapper scripts which hide some of the complexity.
>
Sounds good to me. Regarding the GUI, all options/flags relevant for
turntables could go into a separate GUI section.

Markus M