Difference between revisions of "ZoomIn Command"
From GeoGebra Manual
m (fixed wiki syntax) |
|||
| Line 4: | Line 4: | ||
: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. | :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|1=<code>ZoomIn[1]</code> doesn't do anything, <code>ZoomIn[2]</code> zooms the view in, <code>ZoomIn[0.5]</code>is equivalent to [[ZoomOut Command|ZoomOut]][2], i.e. it zooms the view out.}} | {{example|1=<code>ZoomIn[1]</code> doesn't do anything, <code>ZoomIn[2]</code> zooms the view in, <code>ZoomIn[0.5]</code>is equivalent to [[ZoomOut Command|ZoomOut]][2], i.e. it zooms the view out.}} | ||
| − | ;ZoomIn[ <Scale Factor>, | + | ;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. | :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> ] | ;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). | :Zooms the graphics view to the rectangle given by vertices (Min-x, Min-y), (Max-x,Max y). | ||
{{Note|If multiple [[Graphics View|Graphics Views]] are present, the active one is used.}} | {{Note|If multiple [[Graphics View|Graphics Views]] are present, the active one is used.}} | ||
Revision as of 20:39, 2 May 2011
- 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.
