Plot the daily mean flow values from a streamflow data set. Plots daily discharge values
from all years, unless specified. Can choose specific dates to start and end plotting. Can choose to plot out each year
separately. Multiple groups/stations can be plotted if provided with the `groups`

argument. Returns a list of plots.

plot_flow_data( data, dates = Date, values = Value, groups = STATION_NUMBER, station_number, roll_days = 1, roll_align = "right", water_year_start = 1, start_year, end_year, exclude_years, start_date, end_date, log_discharge = FALSE, plot_by_year = FALSE, one_plot = FALSE, 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. |

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. |

start_date | Date (YYYY-MM-DD) of first date to consider for plotting. Leave blank if all years are required. |

end_date | Date (YYYY-MM-DD) of last date to consider for plotting. Leave blank if all years are required. |

log_discharge | Logical value to indicate plotting the discharge axis (Y-axis) on a logarithmic scale. Default |

plot_by_year | Logical value to indicate whether to plot each year of data individually. Default |

one_plot | Logical value to indicate whether to plot all groups/stations on one plot. Default |

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

A ggplot2 object of daily flows from flow_data or HYDAT flow data provided

# Run if HYDAT database has been downloaded (using tidyhydat::download_hydat()) if (file.exists(tidyhydat::hy_downloaded_db())) { # Plot data from a data frame and data argument flow_data <- tidyhydat::hy_daily_flows(station_number = "08NM116") plot_flow_data(data = flow_data) # Plot data directly from HYDAT plot_flow_data(station_number = "08NM116") # Plot statistics with custom years plot_flow_data(station_number = "08NM116", start_year = 1981, end_year = 2010, exclude_years = c(1991,1993:1995)) # Plot data between specific dates plot_flow_data(station_number = "08NM116", start_date = "1990-01-01", end_date = "1990-06-01") # Plot data multiple groups on one plot plot_flow_data(station_number = c("08NM241", "08NM242"), one_plot = TRUE) }#> Warning: Did not plot 3394 missing or excluded values between 1949-01-01 and 2017-12-31.#> Warning: Did not plot 3394 missing or excluded values between 1949-01-01 and 2017-12-31.#> Warning: Did not plot 1460 missing or excluded values between 1981-01-01 and 2010-12-31.#> Warning: Did not plot 328 missing or excluded values between 1983-01-01 and 2016-12-31.#> $Daily_Flows#>