FAQ:  What sets the initial Zoom to Selected Features scale for a single point?

【解决方案】
Because
points are zero-dimensional, they do not have a bounding geometry or an extent envelope like polygons and lines. An envelope is defined as a minimum bounding rectangle with a width (x-value) and height (y-value).

When a user selects the option to zoom to a point feature from a selection, ArcMap assigns geometry to the point feature since points have no spatial extent. The extent of the entire point feature class is examined, and a zoom scale is selected based on the extent of the feature class.

The calculated zoom scale is 1/20th of the full extent of the feature class.


�If the data frame is zoomed out further than 1/20th of the feature class' extent, the 'Zoom To' tool zooms in to 1/20th of the full extent. The same scale is seen in the data frame.



If the data frame is zoomed in closer than 1/20th of the feature class' extent and select the option to 'Zoom To', the geometry or extent envelope is re-created, and the data is centered in the data view.

Selecting two or more points does not exhibit the same behavior, since the user has custom-created an extent/envelope and there are (at least) two XY points.

【创建及修改时间】
Created: 12/17/2013

Last Modified: 9/19/2014
【原文链接】
http://support.esri.com/en/kno ... 41898