[GRASS-user] v.isochrones : error message

[Moritz Lennert]

On 12/04/15 12:45, image93 wrote:
> Hello,
>
> Thank for your replies and for your previous example.
>
> I try to follow it. I succeed in preparing data (v.db.update, v.net, etc. ).
> Moreover, i succeed in generating relevant isochrones map thanks to GUI
> graphical interface. i paste below an SS :
>
> <http://osgeo-org.1560.x6.nabble.com/file/n5200944/SS_isochrone.jpg>

Could you explain a bit more how you created these isochrones ?

>
> But when i try to apply your v.isochrones command line :
>
> <http://osgeo-org.1560.x6.nabble.com/file/n5200944/SS_command_line_v.jpg>
>
>
>   an error message appears. "method" and "cost_column" parameters do not
> exist (regardless of the method used).
>
> <http://osgeo-org.1560.x6.nabble.com/file/n5200944/SS_error_message.jpg>
>
> I'm working with grass 7.0 and i re-downloaded the v.isochrones extension
> from the repository.

How do you download the extension ?

Could you use g.extension to remove the extension and then reinstall ? 
Something like this:

g.extension v.isochrones op=remove -f
g.extension v.isochrones op=add

>it seems i'm still working with the old version of the
> extension because "method" and "cost_column" do not exist. I use the console
> command via the GUI. i don't use the true GRASS7.0 COMMAND LINE because i
> don't know where the path has to pointed to ?

Normally, just typing 'v.isochrones' should work. Which OS are you 
working in ?

> The  "method" and
> "cost_column" parameters do not exist too for the v.isochrones GUI
> (graphical interface).

That just means that you are still not using the updated version.

Try to find out which v.isochrones command is being launched. In 
GNU/Linux you can do this by typing "which v.isochrones" in the command 
line. IIUC, 'where.exe' does something similar in MS Windows.

Moritz