# isosurface related..

**URL:** https://discourse.vtk.org/t/isosurface-related/2920
**Category:** Support
**Created:** [March 30, 2020, 8:34pm UTC](https://discourse.vtk.org/t/isosurface-related/2920 "2020-03-30T20:34:22Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![kalpathi](https://discourse.vtk.org/user_avatar/discourse.vtk.org/kalpathi/32/1543_2.png) [@kalpathi](https://discourse.vtk.org/u/kalpathi)
#### Post date: [March 30, 2020, 8:34pm UTC](https://discourse.vtk.org/t/isosurface-related/2920/1 "2020-03-30T20:34:22Z")

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If your data is coming from a multi-component image(say a bmp with r,gb) or volume, how do y you specify the component on which to extract the isoline/isosurface?