# Span-average in 3D airfoil

**URL:** https://discourse.paraview.org/t/span-average-in-3d-airfoil/14664
**Category:** ParaView Support
**Created:** [May 18, 2024, 2:03pm UTC](https://discourse.paraview.org/t/span-average-in-3d-airfoil/14664 "2024-05-18T14:03:14Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![xq520](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/x/43a26b/32.png) [@xq520](https://discourse.paraview.org/u/xq520)
#### Post date: [May 18, 2024, 2:03pm UTC](https://discourse.paraview.org/t/span-average-in-3d-airfoil/14664/1 "2024-05-18T14:03:14Z")

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Hello,

I want to get span-average data across the z direction. And I used Descriptive Statistics, but the value didn’t change. Also how to specify direction in Descriptive Statistics filiter? If need, I can upload my vtu file.

Thanks a lot.