[Qgis-user] split lines at fixed intervals

[Schroeder Natalia]

Hello,
I want to split polylines into fixed 1500 m intervals. Using the grass 
tool v.split.length with 1500 as "maximum segment length", the lines are 
divided into equal intervals (not fixed), I mean, the tool "accommodate" 
the length of lines in order to split them in equal intervals. For 
example: if the line is 8000 m length, the result is 6 segments of 
1333.33 m, instead of maintaining the 1500 m I want, and leaving a small 
surplus segment of 500 m.
Does exist a way to do what I want?
Thanks in advance
Natalia

-- 
Natalia M. Schroeder
Laboratorio de Interacciones Ecológicas (LIE)
Instituto Argentino de Investigaciones de las Zonas Áridas (IADIZA), CONICET
CC 507, CP 5500, Mendoza, Argentina.
TE: +54-261-5244166
http://personal.mendoza-conicet.gob.ar/natalias/