etasFLP (version 1.3.0)

magn.plot: Transformed plot of the magnitudes distribution of an earthquakes catalog

Description

Plots the logarithm of the cumulative frequency of eccedence vs. magnitude in an earthquake catalog.

Usage

magn.plot(catalog,...)

Arguments

catalog

should be a eqcat object, or at least must contain a column with name magn1.

...

other arguments to be passed to plot()

Value

Details

For each magnitude $mj$, if $Nj$ is the number of values of magn1 greater than $mj$, the values of $log(Nj)$ vs. $mj$ are plotted.

According to the Gutenberg-Richter law, this plot should be linear. If there is a linear behaviour only for values greater than a given $m0$, then $m0$ is probably the magnitude threshold of the catalog.

Examples

## Not run: 
# data(italycatalog)
# magn.plot(italycatalog) 
# ## End(Not run)