ZoomIn Command

From GeoGebra Manual
Revision as of 19:41, 2 May 2011 by Zbynek (talk | contribs) (formating)
Jump to: navigation, search



ZoomIn[ <Scale Factor> ]
Zooms the Graphics View in by given factor with respect to current zoom, center of the screen is used as center point for the zoom.
Example: ZoomIn[1] doesn't do anything, ZoomIn[2] zooms the view in, ZoomIn[0.5]is equivalent to ZoomOut[2], i.e. it zooms the view out.
ZoomIn[ <Scale Factor>, <Center Point> ]
Zooms the Graphics View in by given factor with respect to current zoom, second parameter specifies center point for the zoom.
ZoomIn[ <Min-x>, <Min-y>, <Max-x>, <Max-y> ]
Zooms the graphics view to the rectangle given by vertices (Min-x, Min-y), (Max-x,Max y).
Note: If multiple Graphics Views are present, the active one is used.

Comments

Idea of Use[edit]

Linear aproximation of a function by its tangent[edit]

Create a function f with a point A on it and a button with the code ZoomIn(2,A) to see that the function looks equal to the tangent for a big "magnification". Another button with ZoomOut let you be able to prove this at other positions of the point A.

© 2024 International GeoGebra Institute