Zoom to the given feature extent.
mapCanvas.setExtent(rect, ...)
the rectangular extent to zoom to (a numeric vector in the order xmin, ymin, xmax, ymax)
xmin
ymin
xmax
ymax
low-level parameters (such as host and auth) to be passed on to qgisremote()
host
auth
qgisremote()
The new scale of the canvas (numeric).