[yt-users] field parameters and extract_connected_sets

[Elizabeth Tasker]

Hi,

Is there a way of passing field parameters to extract_connected_sets?

Currently, 

print dd["NegEscapeVelocity"]

works fine but

contours = dd.extract_connected_sets("NegEscapeVelocity", 1, 30.0, maxv, log_space=False)

complains it can't find the set field variables.

Elizabeth