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drawpolygon
Draw a polygon
Description `

    [XV,YV,H] = drawpolygon asks the user to draw a closed polygon on the
    current figure. Double-click or right-click to quickly close the
    polygon and exit. [XV,YV] are the vertices of the polygon, and H a
    handle to the polygon.

    [XV,YV,H] = drawpolygon(N) selects at most N points.

    [XV,YV,H] = drawpolygon(N,DX) specifies the tolerance DX for closing
    the polygon, i.e. the number of pixels DX in the neighborhoud of the
    first vertex required to close the polygon. By default, DX=4.

See Also

    selectdata.

`

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