# Plot TOXSWA surface water concentrations

Plot TOXSWA hourly concentrations of a chemical substance in a specific
segment of a TOXSWA surface water body.

## Usage

``` r
# S3 method for class 'TOXSWA_cwa'
plot(
  x,
  time_column = c("datetime", "t", "t_firstjan", "t_rel_to_max"),
  xlab = "default",
  ylab = "default",
  add = FALSE,
  threshold_factor = 1000,
  thin_low = 1,
  total = FALSE,
  LC_TIME = "C",
  ...
)
```

## Arguments

- x:

  The TOXSWA_cwa object to be plotted.

- time_column:

  What should be used for the time axis. If "t_firstjan" is chosen, the
  time is given in days relative to the first of January in the first
  year.

- xlab, ylab:

  Labels for x and y axis.

- add:

  Should we add to an existing plot?

- threshold_factor:

  The factor by which the data have to be lower than the maximum in
  order to get thinned for plotting (see next argument).

- thin_low:

  If an integer greater than 1, the data close to zero (smaller than
  1/threshold_factor of the maximum) in the series will be thinned by
  this factor in order to decrease the amount of data that is included
  in the plots

- total:

  Should the total concentration in water be plotted, including
  substance sorbed to suspended matter?

- LC_TIME:

  Specification of the locale used to format dates

- ...:

  Further arguments passed to `plot` if we are not adding to an existing
  plot

## Author

Johannes Ranke

## Examples

``` r
H_sw_D4_pond  <- read.TOXSWA_cwa("00001p_pa.cwa",
  basedir = "SwashProjects/project_H_sw/TOXSWA",
  zipfile = system.file("testdata/SwashProjects.zip", package = "pfm"))
plot(H_sw_D4_pond)

plot(H_sw_D4_pond, time_column = "t")

plot(H_sw_D4_pond, time_column = "t_firstjan")

plot(H_sw_D4_pond, time_column = "t_rel_to_max")


H_sw_R1_stream  <- read.TOXSWA_cwa("00003s_pa.cwa",
  basedir = "SwashProjects/project_H_sw/TOXSWA",
  zipfile = system.file("testdata/SwashProjects.zip", package = "pfm"))
plot(H_sw_R1_stream, time_column = "t_rel_to_max")
```