How to create a boundary in PCA/t-SNE plot?

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Hello,
I am wondering if there is any possible way to plot a graph, like the one in link below, within KNIME? Any help/suggestions would be appreciated.

Figure - PMC (nih.gov)

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I’m pretty sure the authors drew that shadowed area in by hand.

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Hi @mpepper -

I’m afraid there’s not a node dedicated to this kind of boundary plotting in KNIME. That said, you could probably tackle it with a bit of Python or R code inside a related Snippet node.

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