`R/plot_annual_outside_normal.R`

`plot_annual_outside_normal.Rd`

Plots the number of days per year outside of the 'normal' range (typically between 25 and 75th percentiles) for
each day of the year. Upper and lower-range percentiles are calculated for each day of the year of from all years, and then each
daily flow value for each year is compared. All days above or below the normal range are included. Calculates statistics from all
values from complete years, unless specified. Data calculated using `calc_annual_outside_normal()`

function. Returns a list of plots.

plot_annual_outside_normal( data, dates = Date, values = Value, groups = STATION_NUMBER, station_number, normal_percentiles = c(25, 75), roll_days = 1, roll_align = "right", water_year_start = 1, start_year, end_year, exclude_years, months = 1:12, include_title = FALSE )

data | Data frame of daily data that contains columns of dates, flow values, and (optional) groups (e.g. station numbers).
Leave blank if using |
---|---|

dates | Name of column in |

values | Name of column in |

groups | Name of column in |

station_number | Character string vector of seven digit Water Survey of Canada station numbers (e.g. |

normal_percentiles | Numeric vector of two values, lower and upper percentiles, respectively indicating the limits of the
normal range. Default |

roll_days | Numeric value of the number of days to apply a rolling mean. Default |

roll_align | Character string identifying the direction of the rolling mean from the specified date, either by the first
( |

water_year_start | Numeric value indicating the month ( |

start_year | Numeric value of the first year to consider for analysis. Leave blank to use the first year of the source data. |

end_year | Numeric value of the last year to consider for analysis. Leave blank to use the last year of the source data. |

exclude_years | Numeric vector of years to exclude from analysis. Leave blank to include all years. |

months | Numeric vector of months to include in analysis (e.g. |

include_title | Logical value to indicate adding the group/station number to the plot, if provided. Default |

A list of ggplot2 objects with the following for each station provided:

a plot that contains the number of days outside normal

number of days per year below the daily normal (default 25th percentile)

number of days per year above the daily normal (default 75th percentile)

number of days per year below and above the daily normal (default 25/75th percentile)

# Run if HYDAT database has been downloaded (using tidyhydat::download_hydat()) if (file.exists(tidyhydat::hy_downloaded_db())) { # Plot annual statistics with default limits of normal (25 and 75th percentiles) plot_annual_outside_normal(station_number = "08NM116") # Plot annual statistics with custom limits of normal plot_annual_outside_normal(station_number = "08NM116", normal_percentiles = c(10,90)) }#> Warning: One or more calculations included missing values and NA's were produced. Filter data for complete years or months, or use to ignore_missing = TRUE to ignore missing values.#> Warning: One or more calculations included missing values and NA's were produced. Filter data for complete years or months, or use to ignore_missing = TRUE to ignore missing values.#> $Annual_Days_Outside_Normal#>