flux_plot function

plotting fluxes for visual evaluation

plots the fluxes, fit and slope in facets with color code indicating quality flags This function takes time to run and is optional in the workflow, but it is still highly recommended to use it to visually check the measurements. Note that 'flux_plot' is specific to the 'fluxible' package and will work best with datasets produced following a fluxible workflow.

flux_plot(
  slopes_df,
  conc_col,
  datetime_col,
  color_discard = "#D55E00",
  color_cut = "#D55E00",
  color_ok = "#009E73",
  color_zero = "#CC79A7",
  scale_x_datetime_args = list(date_breaks = "1 min", minor_breaks = "10 sec",
    date_labels = "%e/%m \n %H:%M"),
  f_ylim_upper = 800,
  f_ylim_lower = 400,
  f_plotname = "",
  facet_wrap_args = list(ncol = 4, nrow = 3, scales = "free"),
  y_text_position = 500,
  print_plot = "FALSE",
  output = "print_only",
  ggsave_args = list()
)

Arguments

• slopes_df: dataset containing slopes, with flags produced by flux_quality

• conc_col: column with gas concentration

• datetime_col: column with datetime of each data point

• color_discard: color for fits with a discard quality flag

• color_cut: color for the part of the flux that is cut

• color_ok: color for fits with an ok quality flag

• color_zero: color for fits with a zero quality flag

• scale_x_datetime_args: list of arguments for scale_x_datetime

• f_ylim_upper: y axis upper limit

• f_ylim_lower: y axis lower limit

• f_plotname: filename for the extracted pdf file; if empty, the name of slopes_df will be used

• facet_wrap_args: list of arguments for facet_wrap_paginate

• y_text_position: position of the text box

• print_plot: logical, if TRUE it prints the plot as a ggplot object but will take time depending on the size of the dataset

• output: pdfpages, the plots are saved as A4 landscape pdf pages; ggsave, the plots can be saved with the ggsave function; print_only (default) prints the plot without creating a file (independently from 'print_plot' being TRUE or FALSE)

• ggsave_args: list of arguments for ggsave

  (in case output = "ggsave")

Returns

plots of fluxes, with raw concentration data points, fit, slope, and color code indicating quality flags and cuts. The plots are organized in facets according to flux ID, and a text box display the quality flag and diagnostics of each measurement. The plots are returned as a ggplot object if print_plot = TRUE; if print_plot = FALSE it will not return anything but will produce a file according to the output argument.

Examples

data(slopes0_flag)
flux_plot(slopes0_flag, conc, datetime)
data(slopes30lin_flag)
flux_plot(slopes30lin_flag, conc, datetime)
data(slopes30qua_flag)
flux_plot(slopes30qua_flag, conc, datetime)