# Error in reading three D vector data

**URL:** https://discourse.paraview.org/t/error-in-reading-three-d-vector-data/10807
**Category:** ParaView Support
**Created:** [November 19, 2022, 4:56am UTC](https://discourse.paraview.org/t/error-in-reading-three-d-vector-data/10807 "2022-11-19T04:56:14Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![Hirshikesh\_Hirshikes](https://discourse.paraview.org/user_avatar/discourse.paraview.org/hirshikesh_hirshikes/32/8187_2.png) [@Hirshikesh\_Hirshikes](https://discourse.paraview.org/u/Hirshikesh_Hirshikes)
#### Post date: [November 19, 2022, 4:56am UTC](https://discourse.paraview.org/t/error-in-reading-three-d-vector-data/10807/1 "2022-11-19T04:56:14Z")

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I am trying to read vector data (3 dimensions). I am getting an error while reading however similar script works scalar data. Please find the attached .vtu file.  
[phi1.vtu](https://discourse.paraview.org/uploads/short-url/fBuxCJcXvo9pCbPJZOZO572qABP.vtu) (2.0 KB)

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### Author: ![Kenichiro-Yoshimi](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/k/ecc23a/32.png) [@Kenichiro-Yoshimi](https://discourse.paraview.org/u/Kenichiro-Yoshimi)
#### Post date: [November 21, 2022, 10:56am UTC](https://discourse.paraview.org/t/error-in-reading-three-d-vector-data/10807/2 "2022-11-21T10:56:34Z")

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Hi,

As you can see below, the `NumberOfComponents` for `f_9` is **4**. However, it looks like this value should be **3**.

```auto
<DataArray type="Float64" Name="f_9" NumberOfComponents="4" format="ascii">

```