Read a .csv file with categorical data
Reads a data table containing categorical data (e.g. petrographic, heavy mineral or geochemical data)
a string with the path to the .csv file
either "bray" (for the Bray-Curtis distance) or "aitchison" (for Aitchison's central logratio distance). If omitted, the function defaults to 'aitchison', unless there are zeros present in the data.
an optional string with the name of one of R's built-in colour palettes (e.g., heat.colors, terrain.colors, topo.colors, cm.colors), which are to be used for plotting the data.
an object of class
compositional, i.e. a list with the
x: a data frame with the samples as rows and the categories as columns
method: either "aitchison" (for Aitchison's centred logratio
distance) or "bray" (for the Bray-Curtis distance)
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