Dear Users,
I want to form streaklines within a 3D vector field time-series, on a
scattered grid, using the Sequencer to advance the time frame. The
documentation asserts that this is possible, but does not provide an
explicit example that is sufficiently similar to my situation.
The documentation indicates that the appropriate option for the
{Streakline}<data> input, when using the Sequencer this way, is to input
the entire series. However, {Streakline} requires the input field or series
to have a 'connections' component, and {AutoGrid} refuses to operate on the
whole series. Thus, I don't see how it is possible to input the entire
series to {Streakline}, unless the source data is a native DX file with a
connections component (which mine isn't).
If I use {Sequencer} and {Select} on the series, I can apply {AutoGrid} to
an individual series member and pass the output to the <data> input of
{Streakline}. But, if I then connect the {Sequcencer} output to the <frame>
input of {Streakline}, the latter module produces the execution error: "Bad
parameter: frame parameter given out of sequence". (If I disconnect the
<frame> input I get no streaklines in the image, anyway).
As for the other inputs to {Streakline}, I supplied a line (created using
{Grid}) to <start>, and left the <time>, <head>, etc. inputs on their defaults.
So, what am I doing wrong?
Thanks in advance!
Allen H. Nugent
Graduate School of Biomedical Engineering
University of New South Wales
Sydney NSW 2052 Australia
Tel: +61 2 9385 3916 Fax: +61 2 9663 2108
