FM.init: Model Initialization
In FloodMapper: Cross-Scale Flooding Prediction under Heavy Precipitation

Description Usage Arguments Author(s) Examples

This function needs to be executed in order to initiate a FloodMapper model run. A unique run name should be specified to identify the model run.

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FM.init(runname, startdatetime, enddatetime, outputinterval,
    internaltimestep = 30, debug = TRUE, rerun = FALSE,
    wdbreakpoints = NA, workdir = "")

`runname`	a unique name to identify the model run. A folder with this name will be created under your current work directory.
`startdatetime`	start datetime of the model run, should be formated as "YYYY-MM-DD hh:mm:ss". E.g., "2016-06-09 12:00:00".
`enddatetime`	end datetime of the model run, should be formated as "YYYY-MM-DD hh:mm:ss". E.g., "2016-06-09 13:00:00".
`outputinterval`	time step for the model outputs, unit: seconds.
`internaltimestep`	(OPTIONAL) internal integral time step, unit: seconds, default: 30 seconds.
`debug`	(OPTIONAL) if the debug mode is enabled, a log file (named log.txt) will be generated under the run folder.
`rerun`	(OPTIONAL) assign TRUE if this is a rerun.
`wdbreakpoints`	(OPTIONAL) a vector defines how to display the flood depth with different colors (unit: mm). This setting will be only applied to the outputted PNG/PDF files.
`workdir`	Full path to a user-specified work directory. If not specified, the temporary folder defined by tempdir() will be used.

Xander Wang <xiuquan.wang@gmail.com>

## Load FloodMapper package
library(FloodMapper)

## Refer to Step 1 in the sample code of FM.start():
## Step 1. Initiate a new model run with a name of "Lafayette_1km"