Description Usage Arguments Author(s) References Examples
Creates a diagram as described by Taylor (2001). The graph is in the form
of a semicircle, with radial lines and spokes connecting at a focus point on
the flat (lower) edge. The radius of a point on the graph indicates the
standard deviation of the corresponding quantity, i.e. x and the columns in
y. The angle connecting a point on the graph to the focus provides an
indication of correlation coefficient with respect to x. The “east” side
of the graph indicates R=1, while R=0 is at the
"north" edge and R=1 is at the "west" side. The x
data are indicated with a bullet on the graph, appearing on the lower edge
to the right of the focus at a distance indicating the standard deviation of
'x'. The other points on the graph represent the columns of 'y',
coded automatically or with the supplied values of 'pch' and
'col'.
The example shows two tidal models of the Halifax sealevel data, computed
with tidem()
with just the M2 component and the S2 component;
the graph indicates that the M2 model is much better than the S2 model.
1 
x 
a vector of reference values of some quantity, e.g. measured over time or space. 
y 
a matrix whose columns hold values of values to be compared with
those in x. (If 
scale 
optional scale, interpreted as the maximum value of standard deviation. 
pch 
list of characters to plot, one for each column of 
col 
list of colors for points on the plot, one for each column of

labels 
optional vector of strings to use for labelling the points. 
pos 
optional vector of positions for labelling strings. If not provided, labels will be to the left of the symbols. 
... 
optional arguments passed by 
Dan Kelley
Taylor, Karl E., 2001. Summarizing multiple aspects of model performance in a single diagram, J. Geophys. Res., 106:D7, 7183–7192.
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