This function helps to explore DNA alignments by zooming in. The user clicks twice defining the opposite corners of the portion which is extracted and drawned on a new window.
an object of class
further arguments to pass to
This function works with a DNA alignment (freshly) plotted on an
interactive graphical device (i.e., not a file) with
alex, the user clicks twice defining a rectangle
in the alignment, then this portion of the alignment is extacted and
plotted on a new window. The user can click as many times on
the alignment. The process is stopped by a right-click. If the user
clicks twice outside the alignment, a message “Try again!” is
alex is called, the alignment is plotted on a new
window without closing or deleting those possibly already plotted.
In all cases, the device where
x is plotted is the active
window after the operation. It should not be closed during the
## Not run: data(woodmouse) image(woodmouse) alex(woodmouse) ## End(Not run)
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