Zooms out on current plot
Interactively zoom out on the current plot. Works on an existing
qmap object. Simply pass that object to
zo(). A single zoom
out results and the extent of the
qmap object is changed.
A qmap object. Optional, but performs better with larger data sets.
A proportion to determine the zoom level. The x and y axes are increased by this amount. Default is 0.5.
A list with an x and y numeric indicating a location. Default is to interactively get loc value until escaped.
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