[gradsusr] Locating saddle points from stream line charts

[Lyndz]

Dear Grads experts,

I would like to ask if there is a way to locate (lat-lon coordinates)
saddle points/col/equilibrium points in GrADS from streamline charts.

Attached is the sample image regarding this. The black dot is the location
of the saddle point that I want to locate. It is where two highs and two
lows that are juxtaposed in a northwest-southeast and northeast-southwest
orientations, respectively, meet.

I'll appreciate any help.

Sincerely,

*Lyndz*
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://gradsusr.org/pipermail/gradsusr/attachments/20190523/1595dfc1/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: Screen Shot 2019-05-23 at 3.23.22 AM.png
Type: image/png
Size: 209555 bytes
Desc: not available
URL: <http://gradsusr.org/pipermail/gradsusr/attachments/20190523/1595dfc1/attachment-0001.png>