X , Y ,Z data
 

Hi I have a non-uniform distributed nodes each one has an X , Y coordinate and pressure value . I would like to use tecplot to visulatization the data. what I know if the nodes are uniformly distributed it will be easy but with the non-uniform nodes distribtion I do not know how can I draw it.

I would defer you to their documentation.

The part you'd be interested in starts on page 109. It's a bit of reading but the best way to learn is to teach yourself