my goal is to compute this variable

tauw = 0.00095* velocity:0 (of the second row: 0.00367781) / (0.0003035 - 0)

and

tauw1 = 0.00095* velocity:0 (of the third row :  0.232017) / (0.0003035 - 0)

and put tauw e tauw1 in a new variable



2009/6/17 Carletto Rossi <nuovodna@gmail.com>

> Hi, i have this file
>
> pressure,k,eps,zeta,f,velocity:0,velocity:1,velocity:2,vtkValidPointMask,Point
> Coordinates:0,Point Coordinates:1,Point Coordinates:2,vtkOriginalIndices
>
> 0.150545,0.000575811,0.0231277,0.000339049,-0.0193008,0.00318629,-6.24066e-07,5.39599e-05,^A,7,0,0,0
>
> 0.150546,0.000782719,0.0226157,0.000497957,-0.0192084,0.00367781,5.09813e-06,5.90689e-05,^A,7,0.0003035,0.000225,1
>
> 0.056182,0.00501745,0.022044,0.00919293,-0.040201,0.232017,3.84469e-06,4.93005e-06,^A,7,3.0347,2.24977,9999
>
> 0.0561819,0.00475808,0.0218272,0.00853701,-0.0412128,0.227424,3.23064e-07,4.8063e-06,^A,7,3.035,2.25,10000
>
>
> I have to compute the difference beetwen the Second Element in Point
> Coordinates:1 column and the First Element in Point Coordinates:1
>
> 0.0003035 - 0
>
> and the difference beetwen the Fourth Element in Point Coordinates:1 column
> and the Third Element in Point Coordinates:
>
> 3.035 - 3.0347
>
> and i'd like to put this two results in a new variable named y
>
> in what way i can do that?
>
>

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