ion_labeller: Chemical species names for plots and tables

In MartinSchobben/point: Reading, Processing, and Analysing Raw Ion Count Data

Chemical species names for plots and tables

Description

ion_labeller and R_labeller converts a character string containing chemical species names in a latex string or expression. The stat_labeller function generates labels for statistics in tables (latex) or on plots (expressions).

Usage

ion_labeller(ion, label = "latex")

R_labeller(ion1, ion2, label = "latex")

stat_labeller(var, org, stat, value, label = "latex")

Arguments

ion	A chemical species character string
label	Character string indicating whether the output should be "latex" or an expression ("expr").
ion1	A chemical species character string (for isotope ratios the rare isotope).
ion2	A chemical species character string (for isotope ratios the common isotope).
var	A character string for the variable, either "X" for single ions or "R" for ion ratios.
org	A character string for the origin of a derived variable, e.g., R.
stat	A character string for the statistic following convention of e.g. point::names_stat_X.
value	The numeric value for the statistic result.

Details

This functions converts chemical species names of the form, e.g. '"12C"', '"13C2"', '"12C 14N"', or '"12C-14N"' to a character string which can be parsed in Latex to species names with appropriate superscripts on th left for mass and subscripts for the index on the right.

Value

A character string parsable in Latex or expression for usage in plots.

Examples

# plot some ion count data
library(ggplot2)
ggplot() +
 geom_blank() +
 ylab(ion_labeller("12C2-40Ca", "expr")) +
 xlab(R_labeller("12C2-40Ca", "13C2-40Ca", "expr"))

MartinSchobben/point documentation built on May 22, 2022, 7:15 a.m.