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to

Autoplot URI here.

loading uri=vap%2Bhapi%3Ahttps%3A%2F%2Fjfaden.net%2FHapiServerDemo%2Fhapi%3Fid%3D%3F%3F%3F%3F%3F%3F%26parameters%3DAltimeter%26timerange%3D2021-07-27

Click and drag a range on the plot to zoom in. Buttons below zoom out and scan. Click to read coordinates, and the center button will center the plot on this click position.

Note there is also a version of this at http://autoplot.org/git/web/thin/zoom/demo.html.
v20200215.0705