ImportRW: Import a ring-width file

Description Usage Arguments Details Value Note Author(s) See Also

View source: R/tReeglia.R

Description

Loads a csv text file containing the ring widths measured on tree cross-sections.

Usage

1
ImportRW(filename)

Arguments

filename

a string giving the name of the file to load

Details

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:

0.0 1.30 3.00 5.00
1990 1234
1991 1234
1992 1234 4232
1993 1234 4232 353
1994 1234 4232 353
1995 1234 4232 353
1996 1234 4232 353 3567
1997 1234 4232 353 3567
1998 1234 4232 353 3567

Value

Returns a data.frame object holding the ring-widths. Calendar years are coded as row names, and can be accessed via rownames(). Cross-section heights along the stem are coded column names, they can be accessed via colnames() and converted to numeric values via as.numeric().

Note

Decimals should be dot-separated.

Author(s)

Marco Bascietto

See Also

ExportFile


mbask/treeglia documentation built on Sept. 2, 2017, 2:34 a.m.