fasstr (version 0.5.3)

write_flow_data: Write a streamflow dataset as a .xlsx, .xls, or .csv file

Description

Write a daily streamflow data set to a directory. Can fill missing dates or filter data by years or dates before writing using given arguments. List data frame or HYDAT station number to write its entirety. Can write as .xls, .xlsx, or .csv file types. Writing as Excel file type uses the writexl package.

Usage

write_flow_data(
  data,
  dates = Date,
  values = Value,
  groups = STATION_NUMBER,
  station_number,
  water_year_start = 1,
  start_year,
  end_year,
  start_date,
  end_date,
  file_name,
  fill_missing = FALSE,
  digits
)

Arguments

data

Data frame of daily data that contains columns of dates, flow values, and (optional) groups (e.g. station numbers). Leave blank or set to NULL if using station_number argument.

dates

Name of column in data that contains dates formatted YYYY-MM-DD. Only required if dates column name is not 'Date' (default). Leave blank or set to NULL if using station_number argument.

values

Name of column in data that contains numeric flow values, in units of cubic metres per second. Only required if values column name is not 'Value' (default). Leave blank if using station_number argument.

groups

Name of column in data that contains unique identifiers for different data sets, if applicable. Only required if groups column name is not 'STATION_NUMBER'. Function will automatically group by a column named 'STATION_NUMBER' if present. Remove the 'STATION_NUMBER' column beforehand to remove this grouping. Leave blank if using station_number argument.

station_number

Character string vector of seven digit Water Survey of Canada station numbers (e.g. "08NM116") of which to extract daily streamflow data from a HYDAT database. Requires tidyhydat package and a HYDAT database. Leave blank if using data argument.

water_year_start

Numeric value indicating the month (1 through 12) of the start of water year for analysis. Default 1.

start_year

Numeric value of the first year of data to write. Leave blank or set well before start date (i.e. 1800) to use from the first year of the source data.

end_year

Numeric value of the last year of data to write. Leave blank or set well after end date (i.e. 2100) to use up to the last year of the source data.

start_date

Date (YYYY-MM-DD) of first date of data to write. Leave blank or set well before start date (i.e. 1800-01-01) if all dates required.

end_date

Date (YYYY-MM-DD) of last date of data to write. Leave blank or set well after end date (i.e. 2100-12-31) if all dates required.

file_name

Character string naming the output file. If none provided, a default file name (with .xlsx) is provided (see "Successfully created" message when using function for file name).

fill_missing

Logical value indicating whether to fill dates with missing flow data with NA. Default FALSE.

digits

Integer indicating the number of decimal places or significant digits used to round flow values. Use follows that of base::round() digits argument.

Examples

if (FALSE) {

# Working examples:

# Write data from a data frame
flow_data <- tidyhydat::hy_daily_flows(station_number = "08NM116")
write_flow_data(data = flow_data, 
                file_name = "Mission_Creek_daily_flows.xlsx")

# Write data directly from HYDAT
write_flow_data(station_number = "08NM116", 
                file_name = "Mission_Creek_daily_flows.xlsx")

# Write data directly from HYDAT and fill missing dates with NA
write_flow_data(station_number = "08NM116", 
                file_name = "Mission_Creek_daily_flows.xlsx",
                fill_missing = TRUE)

}