subset_ord_plot: Subset points from an ordination-derived ggplot
Description
Easily retrieve a plot-derived data.frame with a subset of points
according to a threshold and method. The meaning of the threshold depends
upon the method. See argument description below.
There are many useful examples of phyloseq ordination graphics in the
http://joey711.github.io/phyloseq/subset_ord_plot-examples{phyloseq online tutorials}.
(Required). A ggplot object created by
plot_ordination. It contains the complete data that you
want to subset.
threshold
(Optional). A numeric scalar. Default is 0.05.
This value determines a coordinate threshold or population threshold,
depending on the value of the method argument, ultimately
determining which points are included in returned data.frame.
method
(Optional). A character string. One of
c("farthest", "radial", "square"). Default is "farthest".
This determines how threshold will be interpreted.
[object Object],[object Object],[object Object]
Value
A data.frame suitable for creating a
ggplot plot object, graphically summarizing
the ordination result according to previously-specified parameters.
See Also
http://joey711.github.io/phyloseq/subset_ord_plot-examples{phyloseq online tutorial} for this function.