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Question about Cluster operation #2

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darcular opened this issue Jul 9, 2017 · 1 comment
Open

Question about Cluster operation #2

darcular opened this issue Jul 9, 2017 · 1 comment
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@hag0r

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@darcular
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darcular commented Jul 9, 2017 •
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Hi, Thank you for this great application. I am using it for clustering certain geospatial data with lon/lat. I have a question about the unit of epsilon parameter in your DBSCAN implementation. If I want to set 0.5 km for eps, should I calculate the epsilon by 0.5 / kms_per_radian ? I have tried it and got memory overflow or exceed kryoserializer buffer size. I think the reason is the CellSize for BSPartitioner is too small due to the input epsilon value.
@hag0r
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hag0r commented Jul 13, 2017

Hi, sorry for the delay.
I have to check this. Can you provide some sample data and also your input parameters for DBSCAN?
But, yes the unit depends on the units of your point coordinates.

@hag0r hag0r self-assigned this Jul 13, 2017
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@darcular @hag0r