plot_peakonly {gcxgclab}

Plot only peaks

Description

plot_peakonly plots the peaks from a chromatograph.

Usage

plot_peakonly(peak_df, title = "Peaks")

Arguments

peak_df

a data.frame object. A data frame with 4 columns (Time, X, Y, Peak), ideally the output from top_peaks() or thr_peaks().

title

a string object. Title placed at the top of the plot. Default title "Peaks".

Details

This function creates a circle plot of the peak intensity vs the x and y retention times using ggplot from ggplot2 package (Wickham 2016). The size of the circle indicates the intensity of the peak.

Value

A ggplot object. A circle plot of peak intensity in 2D retention time.

References

Wickham H (2016). ggplot2: Elegant Graphics for Data Analysis. Springer-Verlag New York. ISBN 978-3-319-24277-4, https://ggplot2.tidyverse.org.

Examples

file1 <- system.file("extdata","sample1.cdf",package="gcxgclab")
frame <- extract_data(file1,mod_t=.5)
peaks <- top_peaks(frame$TIC_df, 5)
plot_peakonly(peaks,title="Top 20 Peaks")