This routine reads in a valid Raven main input (.rvi) file and returns the information about hydrological processes as a data table.
rvn_rvi_read(filename)the name of the .rvi file (with .rvi extension included), either relative to the working directory or absolute.
Returns a list with two items:
a data table of hydrologic processes. Includes the following data columns: process type, algorithm, 'from' compartment, 'to' compartment, conditional (logical), and condition (character)
a table of aliases read from the rvi file, NULL if no aliases are included
This function does not like tabs in the .rvi file - it should be untabified first. Comma-delimited tables with a trailing comma are also problematic. The .rvi file can have arbitrary contents outside of the :HydrologicProcesses- :EndHydrologicProcesses block and :SubBasins-:EndSubBasins command blocks.
# sample workflow of rvn_rvi_read
rvi <- system.file("extdata","Nith.rvi", package="RavenR") %>%
rvn_rvi_read(.)
# get number of Hydrologic processes
nrow(rvi$HydProcTable)
#> [1] 14