On Oct 23, 2005, at 10:56 AM, Christopher Creutzig wrote:

 according to texshow, \externalfigure accepts scale as an option.  For me,

\starttext
\externalfigure[cow.pdf][scale=0.8]
\stoptext

results in getting ".8.8.8.8" in front of the image.

The scaling factor is in units of 1000. To get 80% size, use [scale=800]. 

Steve