an object of class <code>UPb</code> or <code>detritals</code>

a string indicating what kind of age should be plotted.<p></p><p>If <code>x</code> has class <code>UPb</code>, <code>type</code> could be one of
either <code>t.75</code>, <code>t.68</code> (default), <code>t.76</code> or
<code>t.conc</code></p>

method

boolean flag indicating if the horizontal lines of
the CAD should be connected by vertical lines

verticals

xlab

an optional string with the name of one of <code>R</code>'s
built-in colour palettes (e.g., heat.colors, terrain.colors,
topo.colors, cm.colors), which are to be used for plotting data
of class <code>detritals</code>.

colmap

colour to give to single sample datasets (i.e. not of
class <code>detritals</code>)

optional arguments to the generic <code>plot</code> function


Plot a dataset as a Cumulative Age Distribution (CAD), also known
as a `empirical cumulative distribution function'.


An R implementation of Ken Ludwig's popular Isoplot add-in to Microsoft Excel. Currently plots U-Pb data on Wetherill and Tera-Wasserburg concordia diagrams. Calculates concordia and discordia ages. Performs linear regression of measurements with correlated errors using the 'York' approach. Generates Kernel Density Estimates (KDEs) and Cumulative Age Distributions (CADs). Calculates 40A/39Ar ages and isochrons. Future versions will include functionality for the Rb-Sr, Sm-Nd, Re-Os, U-Th-He, fission track and cosmogenic nuclide methods, including age spectra, ternary diagrams, radial plots, banana diagrams and multidimensional scaling plots. A graphical user interface is provided as an RStudio Shiny app at http://isoplotr.london-geochron.com. Offline access to this interface will be provided at a later point in time.

Pieter Vermeesch

IsoplotR

Statistical Toolbox for Radiometric Geochronology

cad function

a string indicating what kind of age should be plotted.

If <code>x</code> has class <code>UPb</code>, <code>type</code> could be one of
either <code>t.75</code>, <code>t.68</code> (default), <code>t.76</code> or
<code>t.conc</code>

Last chance! 50% off unlimited learning

cad: Plot continuous data as cumulative age distributions

Description

Usage

Arguments

Examples