[biancab]

Hi there,

I am using Tec360 EX15. Trying to archieve a time-averaged variable I loaded data from different timesteps into Tecplot. Then I tried to specify an equation. Due to having a lot of zones I wrote a Macro:
"
#!MC 1400

$!VarSet |NUMAVG| = (|NUMZONES|-1)

$!Loop |NUMAVG|
$!AlterData
Equation = "V21 = V6 + V6[|LOOP|]"
$!EndLoop

$!AlterData[|NUMZONES|]
Equation = "V22 = V6/|NUMAVG|"

But it gives me the error:
"Incompatible zones referenced in equation...V21 = V6 +V6[1]
"
so does this mean it only reads in 1 zone??

Could somebody please help me :/
Best regards

[JMcGarry]

Hello BiancaB,

I believe the issue was with defining V21 as a function of V6 for all zones summed with V6 for a specific zone ( V6[|LOOP|] ). Also, if you want to find the sum, you must set the sum variable as the addition of the previous sum variable in the loop and the desired variable for that zone in the loop. You can also run in to this error if V21 or V22 have not already been defined. To avoid this, it is often safer to create new variables based on a specific name rather than on variable number.


Below is a macro that will, based on your chosen variable (in this case V6), create two new variables for the sum {sum_V6} and average {avg_V6}:


#!MC 1400

$!VarSet |NUMAVG| = (|NUMZONES|)


$!ALTERDATA
EQUATION = '{sum_V6} = 0'

$!Loop |NUMAVG|
$!AlterData
EQUATION = '{sum_V6} = {sum_V6} + V6[|LOOP|]'
$!EndLoop

$!AlterData[|NUMZONES|]
Equation = '{avg_V6} = {sum_V6}/|NUMZONES|'


Let me know if this helps!


Jared



Technical Support Specialist

Web: www.tecplot.com

[manuc]

Hi

WHat if the time steps are not equal. Can tecplot handle that with time weighted average

[yp1990]

Originally Posted by biancab

Hi there,

I am using Tec360 EX15. Trying to archieve a time-averaged variable I loaded data from different timesteps into Tecplot. Then I tried to specify an equation. Due to having a lot of zones I wrote a Macro:
"
#!MC 1400

$!VarSet |NUMAVG| = (|NUMZONES|-1)

$!Loop |NUMAVG|
$!AlterData
Equation = "V21 = V6 + V6[|LOOP|]"
$!EndLoop

$!AlterData[|NUMZONES|]
Equation = "V22 = V6/|NUMAVG|"

But it gives me the error:
"Incompatible zones referenced in equation...V21 = V6 +V6[1]
"
so does this mean it only reads in 1 zone??

Could somebody please help me :/
Best regards

Hi, did you solve this problem? I also encountered the same thing.

[yp1990]

Originally Posted by JMcGarry

Hello BiancaB,

I believe the issue was with defining V21 as a function of V6 for all zones summed with V6 for a specific zone ( V6[|LOOP|] ). Also, if you want to find the sum, you must set the sum variable as the addition of the previous sum variable in the loop and the desired variable for that zone in the loop. You can also run in to this error if V21 or V22 have not already been defined. To avoid this, it is often safer to create new variables based on a specific name rather than on variable number.


Below is a macro that will, based on your chosen variable (in this case V6), create two new variables for the sum {sum_V6} and average {avg_V6}:


#!MC 1400

$!VarSet |NUMAVG| = (|NUMZONES|)


$!ALTERDATA
EQUATION = '{sum_V6} = 0'

$!Loop |NUMAVG|
$!AlterData
EQUATION = '{sum_V6} = {sum_V6} + V6[|LOOP|]'
$!EndLoop

$!AlterData[|NUMZONES|]
Equation = '{avg_V6} = {sum_V6}/|NUMZONES|'


Let me know if this helps!


Jared



Technical Support Specialist

Web: www.tecplot.com

Thank you! I tried your way, but it still did not go through. I don't know why.

[manuc]

I ran simulation for sometime again ..checked Delta time... Wrote date at that time step times a whole number...and just averaged by number of time steps saved...I couldn't find any other way

[yp1990]

Originally Posted by manuc

I ran simulation for sometime again ..checked Delta time... Wrote date at that time step times a whole number...and just averaged by number of time steps saved...I couldn't find any other way

Thank you!