[GRASS-user] 1 degree = 1 km*1000 ?

GRASS GRASS user
1

achim wrote:

Uploading the lengths of lines in 1)km and 2)degrees in an lat-long
location with the v.to.db module returns a strange result as
d = 1000*km

So what do these (decimal)degrees mean?

what version of GRASS?

the error is with "units=d", yes?

Hamish

2

Its in grass 6.5:
v.to.db map=rivers@achim option=length units=d columns=a_lenght
same as
v.to.db map=rivers@achim option=length units=degrees columns=a_lenght

(there is no degree-option in grass 6.4; I am interested in length
relative to an degree-raster)

achim

Hamish schrieb:

achim wrote:

Uploading the lengths of lines in 1)km and 2)degrees in an lat-long
location with the v.to.db module returns a strange result as
d = 1000*km

So what do these (decimal)degrees mean?

what version of GRASS?

the error is with "units=d", yes?

Hamish