# Point data in some few points in an unstructured grid

**URL:** <https://discourse.vtk.org/t/point-data-in-some-few-points-in-an-unstructured-grid/6655>\
**Category:** Development\
**Created:** [September 17, 2021, 6:46pm UTC](https://discourse.vtk.org/t/point-data-in-some-few-points-in-an-unstructured-grid/6655 "2021-09-17T18:46:20Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Sagues](https://discourse.vtk.org/letter_avatar_proxy/v4/letter/s/a88e4f/32.png) [@Sagues](https://discourse.vtk.org/u/Sagues)\
**Post date:** [September 17, 2021, 6:46pm UTC](https://discourse.vtk.org/t/point-data-in-some-few-points-in-an-unstructured-grid/6655/1 "2021-09-17T18:46:20Z")

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I have an unstructured grid with 100 points and I have to add data in few points, for instance 10 points. If I create an abstract array with this data and only add data in 10 points, then I have a lot of points with NAN data and I have an error message in Paraview when I open this file.

How could I and point data only in several points?