[gradsusr] Add line to a time-longitude plot

[Lyndon Mark Olaguera]

Hi all,

Is there a way to add a dashed line connecting the negative values in a
contour  plot and a solid line connecting the positive values?

I attached here the desired output and the result of my script.


Many thanks,

Lyndz
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://gradsusr.org/pipermail/gradsusr/attachments/20161226/aa1de997/attachment-0001.html 
-------------- next part --------------
A non-text attachment was scrubbed...
Name: Desired_output.png
Type: image/png
Size: 109053 bytes
Desc: not available
Url : http://gradsusr.org/pipermail/gradsusr/attachments/20161226/aa1de997/attachment-0002.png 
-------------- next part --------------
A non-text attachment was scrubbed...
Name: output_in_grads.png
Type: image/png
Size: 207879 bytes
Desc: not available
Url : http://gradsusr.org/pipermail/gradsusr/attachments/20161226/aa1de997/attachment-0003.png