Description Usage Arguments Details Value Examples

This function accepts two data frames of daily flow data and returns a data frame of
calculated difference statistics from calc_allHIT,
calc_magnifSeven, calculate_other_flow_stats, and calculate_GoF_stats.
HitStats, calc_magnifSeven, and other_flow_stats are differented as `(a-b)/a`

1 2 | ```
calculate_stats_diffs(sites, flow_data_a, flow_data_b, yearType = "water",
digits = 3)
``` |

`sites` |
A two column dataframe containing site names for flow_data_a and flow_data_b flow data. |

`flow_data_a` |
A dataframe containing a NWCCompare flow dataset. Should have been cleaned by validate_data and constructed by a build dataset function from this package. |

`flow_data_b` |
A second NWCCompare flow dataset to be compared to flow_data_a. |

`yearType` |
A charcter of either "water" or "calendar" indicating whether to use water years or calendar years, respectively. |

`digits` |
A numeric. Number of digits to round indice values |

Assumptions: Dates must match between the two data sources.

statsout data frame of calculated statistics

1 2 3 4 5 6 7 8 9 10 11 12 13 | ```
# https://cida.usgs.gov/nwc/#!waterbudget/achuc/031300011004
nwis <- "02335757"
huc <- "031300011004"
sites <- data.frame(a=nwis, b=huc, stringsAsFactors = FALSE)
start_date <- "2004-10-01"
end_date <- "2010-09-30"
flow_data_a <- build_nwis_dv_dataset(nwis, start_date, end_date)
flow_data_b <- build_nwc_flow_dataset(huc, start_date, end_date)
diff_statsout <- calculate_stats_diffs(sites = sites,
flow_data_a = flow_data_a,
flow_data_b = flow_data_b,
yearType = "water",
digits = 2)
``` |

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