Dragging and zooming in Plot.geo

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1

I used to zoom and drag maps using base d3…I wonder whether something like d3-versor-dragging is applicable to Plot.geo…or something else, BTW.

Thanks for any feedbacks

2

Hi Enrico,

here’s a direct port of the D3 notebook for Plot: Plot: Versor Zooming / Observable | Observable

Note that we ditch and recreate a new chart each time—but it’s probably OK. We could optimize it maybe by working on a render transform, but we would have to write quite a bit more code.

You can disable the zooming part by specifying a zoomExtent [1, 1].

Note: in the future, please create a GitHub discussion instead, as we’re trying to reorganize the knowledge base around the github repo. (In fact if you’re OK to paste the same question there, I will paste the same answer ;-))

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3

Super thanks!
here is the new topic in Github

4

This is oddly far less performant than the source notebook. It seems to barely work on my phone.

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5

FYI, here is how I used Fil’s code…
World FIRs with zoom and rotate / Enrico Spinielli | Observable
I have issues with labels positioning, I think because I use centroid and for fancy projections it is not the right way…

6

thanks; let’s continue the discussion there.