# Problem with Distance Matrix Hierarchical Clustering

**URL:** <https://forum.knime.com/t/problem-with-distance-matrix-hierarchical-clustering/645>\
**Category:** KNIME Analytics Platform\
**Created:** [January 24, 2010, 6:35pm UTC](https://forum.knime.com/t/problem-with-distance-matrix-hierarchical-clustering/645 "2010-01-24T18:35:38Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Ella](https://forum-cdn.knime.com/letter_avatar_proxy/v4/letter/e/cdc98d/32.png) [@Ella](https://forum.knime.com/u/Ella)\
**Post date:** [January 24, 2010, 6:35pm UTC](https://forum.knime.com/t/problem-with-distance-matrix-hierarchical-clustering/645/1 "2010-01-24T18:35:38Z")

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Hi, I’ve just found KNIME recently and I am very happy that it can deal with distance matrices. However I have the following problem: I read in a distance matrix with Distance Matrix Reader but then the Hierarchical Clustering (DistMatrix) does not work: ` Distance matrix column ‘null’ does not exist’. I tried k-medoids, which works fine. Thanks for any help.

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**Author:** ![thor](https://forum-cdn.knime.com/user_avatar/forum.knime.com/thor/32/4_2.png) [@thor](https://forum.knime.com/u/thor)\
**Post date:** [January 24, 2010, 8:25pm UTC](https://forum.knime.com/t/problem-with-distance-matrix-hierarchical-clustering/645/2 "2010-01-24T20:25:37Z")

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Did you choose the right column in the dialog of the hierarchical clustering node?

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**Author:** ![system](https://forum-cdn.knime.com/uploads/default/original/1X/ab3ccf34482a0329361734a18199390177204f15.png) [@system](https://forum.knime.com/u/system)\
**Post date:** [June 23, 2023, 8:15pm UTC](https://forum.knime.com/t/problem-with-distance-matrix-hierarchical-clustering/645/3 "2023-06-23T20:15:18Z")

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