Loads a csv text file containing the ring widths measured on tree cross-sections.
a string giving the name of the file to load
Ring-widths and their calendar years, as well the heights of the cross-sections they were measured from must be stored in a csv file. Ring-widths will be ordered in columns, from the lowest cross-section, to the highest (nearest to tree tip) cross-section. The first row will hold cross-sections heights (in m). The first column will hold the calendar years whose ring refer. Csv files can be created through any spreadsheet program. As an example of what a future ring-width csv file might look in a spreadsheet consider the following:
Returns a data.frame object holding the ring-widths. Calendar years are coded as row names, and can be accessed via
Cross-section heights along the stem are coded column names, they can be accessed via
colnames() and converted to numeric values via
Decimals should be dot-separated.
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