[GRASS-user] r.fillnulls error

[maven apache]

HI:
When I use the r.fillnulls command to resample a map:
r.fillnulls input=aa output=ab tension=40 smooth=0.1
It show me that: taking too long to find points for interpolation--please
change the region to area where your points are. Continuing calculations...
What does it mean?
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.osgeo.org/pipermail/grass-user/attachments/20100301/f7ef6392/attachment.html