[GRASS5] [5.7] v.digit

[Radim Blazek]

On Thursday 05 February 2004 09:03, Hamish wrote:
> Hi,
>
> some requests/feedback for 5.7's v.digit:
>
>
> 1) remove vertex:
> when there are duplicates, there needs to be some way to select
> next/previous line. Otherwise it can be impossible to get rid of
> duplicates by hand. GRASS 5.0's v.digit can do this.
>
>         |---------|         what I want to get rid of
>
> --x-----x---------x------>  displayed
>
>         |---------------->  only line it will select with mouse

This requires more work, see below. BTW, how this can be done in 5.0?

> 2) settings/symbology (colors):
> yellow is very hard to see on the white background.
> Change default highlight color to blue?
> Make no default color the same?

Blues is hard to see on orthophoto (often dark (forest)), cyan?

> 3) settings/symbology (colors):
> Unchecking box for "Node (2 lines)" & then redraw doesn't work.
>
> It is impossible to track down where area boundaries are open when
> every node is shown! Had to export to GRASS 5.0 to see where the
> problem was.

Yes, this was bug and I have fixed that, will be in cvs soon.

> 4) Is it possible to exit without saving?
> Nice for beginners, as there is no required input= and output=, and
> you don't always remember to make a copy first.

No, each change is immediately written to disk, this is vector library feature.

> 5) XFree86 is using ~45% of the local CPU when v.digit is running.
> ssh uses about another 45% (tunneled X over ssh). Is it stuck in
> some sort of feedback loop? When you click exit, it stops as soon as
> "Registering Lines:   nnnnn", seconds before the menu disappears.

The loop is used in R_get_location_*(), that means always, when v.digit
is waiting for input in XDRIVER. 

I don't want to spend too much time on v.digit, it was temporary solution,
my plan is to add v.digit functionality to QGIS.

Radim