Re:Show HN: Plotting 3 years of hourly data in 150ms
by doublesCs on Friday May 01, 2020 @03:43PM
(#23045768)
Hi, I'm very interested in this. I've been using dask/plotly for a side project but it's just too slow. If you know dask, do you think you could discuss which features of dask your project has and doesn't have?
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Re:Show HN: Plotting 3 years of hourly data in 150ms
by jparmer on Friday May 01, 2020 @04:01PM
(#23045956)
Here's a Dash app that use Dask & Datashader for fast aggregations on +40M rows: https://dash-gallery.plotly.host/dash-world-cell-towers
The source code, which can be used as a Dash + Dask boilerplate, is here: https://github.com/plotly/dash-world-cell-towers
Feel free to ask questions at community.plot.ly
Re:Show HN: Plotting 3 years of hourly data in 150ms
by vamega on Friday May 01, 2020 @04:50PM
(#23046335)
I don't think that actually plots the 40M points, just aggregates them in Python and plots a small section of that data on the website?
Re:Show HN: Plotting 3 years of hourly data in 150ms
by kylebarron on Friday May 01, 2020 @06:35PM
(#23047237)
I believe so. An optimization of Datashader is that it _doesn't_ plot all the points, but rather optimizes which points actually influence pixel values.
Re:Show HN: Plotting 3 years of hourly data in 150ms
by gesman on Friday May 01, 2020 @07:40PM
(#23047636)
It plots cell towers in the middle of my residential neighborhood where i absolutely sure there aren't any
Re:Show HN: Plotting 3 years of hourly data in 150ms
by jcims on Saturday May 02, 2020 @01:42AM
(#23049574)
https://community.opencellid.org/t/range-of-a-tower/370/2
>The range field tells you the approximate area within which the cell could be, in metres. This is effectively an estimate of how accurate the location is.
There's one marked in the middle of a corn field near me with a range of 48,000m. ?