### Tool: Map Statistics

**Map Statistics** reports the minimum, maximum, and mean values,
the standard deviation (SD) from the mean, and the
root-mean-square (RMS) deviation from zero for
volume data (map) models.

**Map Statistics** can be started
from the **Volume Data** section of the **Tools** menu.
It does not have a graphical interface, but simply runs the
**measure mapstats**
command on the currently displayed map models (acting on
selected maps only, if any, otherwise all).
If a map is cropped to a subregion and/or shown at step > 1,
only the corresponding values are used to calculate the statistics.
See also: **Volume Viewer**,
measurements

UCSF Resource for Biocomputing, Visualization, and Informatics /
March 2021