v.parallel: user interface change in 6.x line

[msieczka]

There is a user interface change to v.parallel in GRASS 6.x. The option distance' does not accept negative offsets anymore, and introduces a new side' option to distinguish left/right, instead.

Before v.parallel2, v.parallel used to accept negative numbers for dist. Now it fails:

$ v.parallel in=lines out=lines_par dist=-1

ERROR: value <-1> out of range for parameter <distance>
       Legal range: 0-100000000

I guess such a change to user interface within a stable release line is not allowed.

[hamish]

fixed in devbr6 with r41042. please test.

module is still rather buggy, & it gets differently worse after v.build.polylines. (test map: railroads@spearfish)

• see v.buffer bug report, it's the same lib fn causing problems AFAIK.

I didn't figure out how to get angle= to work. maybe I need minordistance for that? (docs needed)

Hamish

[hamish]

backported to relbr64 with r41064.