# airdist

0th

Percentile

##### Measure distance from plot

Measure a distance between two points on a plot using locator; the function checks par("plt") and par("usr") to try to ensure that the aspect ratio y/x is 1, that is that the units of measurement in both x and y are equivalent.

Keywords
spatial
##### Usage
airdist(ann=FALSE)
##### Arguments
ann
annotate the plot with line measured and distance
##### Value

a list with members:

locator