# CFD post: Find area with variable above a certan value

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 March 6, 2014, 20:22 CFD post: Find area with variable above a certan value #1 Senior Member   Erik Join Date: Feb 2011 Location: Earth (Land portion) Posts: 484 Rep Power: 9 I am trying to find the area on a plane where a variable is above a certain value. Does anyone know a way to do this? Something like count the nodes or area on a certain plane if a variable is greater than some value? Thanks in advance

 March 6, 2014, 21:01 #2 Senior Member   Erik Join Date: Feb 2011 Location: Earth (Land portion) Posts: 484 Rep Power: 9 I think I figured out a way to do it. 1.) Plot the variable on the plane. For the variable range, make a "value list" of ranges. 2.) Make a "User surface" using the method "from contour" and choose the previously defined contour. Pick the contour level that corresponds to the correct range in the "value list" 3.) Use the function calculator to calculate "area" on the User Surface. I don't know how I figured that out... Rather complicated though, I wonder if there is a more elegant way than this?

 March 7, 2014, 10:44 #3 Senior Member   Edmund Singer P.E. Join Date: Aug 2010 Location: Minneapolis, MN Posts: 461 Rep Power: 10 You are doing it in a manner that I would. I am unaware of any other way.

 March 7, 2014, 15:24 #4 Senior Member   Join Date: Jun 2009 Posts: 242 Rep Power: 8 Create an "Iso Clip", select Location = Your Plane, and add a Visibility Parameter. For example, MyVariable >= 100

 March 7, 2014, 21:04 #5 Senior Member   Erik Join Date: Feb 2011 Location: Earth (Land portion) Posts: 484 Rep Power: 9 Thank you for the responses. I appreciate it.

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