How can I plot a vector field of altered value?

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 August 19, 2014, 05:53 How can I plot a vector field of altered value? #1 Senior Member   Sangwoo Kim Join Date: Jul 2014 Location: Seoul, South Korea Posts: 107 Rep Power: 5 Hi all! I made a relative velocity by using Specify Equations as follows. {velocityX_alter}={u}-20.35 {velocityMagnitude_alter}=sqrt({velocityX_alter}*{ velocityX_alter}+{v}*{v}+{w}*{w}) and I plot contours of these values successfully. But I don't know how plot the vectors of them. If I click Slice>Vector>Show Vectors, it seems to show velocityMagnitude, not velocityMagnitude_alter. How should I do??? Thanks in advance!

 August 19, 2014, 06:02 #2 Senior Member   Sangwoo Kim Join Date: Jul 2014 Location: Seoul, South Korea Posts: 107 Rep Power: 5 And please let me know how to draw streamtraces using altered velocity.. Thank you

 August 20, 2014, 03:06 #3 Senior Member   Sangwoo Kim Join Date: Jul 2014 Location: Seoul, South Korea Posts: 107 Rep Power: 5 I got it! And I leave a post for someone who may be in similar situation. I clicked Plot>Vector>Variables in menu bar, and changed U variable into my altered variable, 'velocityX_alter'. Then vector and streamtrace are changed.

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