ENsetcontrol: Set the parameters of a simple control statement

In epanet2toolkit: Call 'EPANET' Functions to Simulate Pipe Networks

Set the parameters of a simple control statement

Description

ENsetcontrol sets the parameters of a simple control statements.

Usage

ENsetcontrol(
  cindex,
  ctype = NULL,
  lindex = NULL,
  setting = NULL,
  nindex = NULL,
  level = NULL
)

Arguments

cindex	Integer, control statement index
ctype	Integer or character string, the control type code (see Details below).
lindex	Integer, index of the link being controlled.
setting	Numeric, value of the control setting.
nindex	Integer, the index of the controlling node.
level	value of controlling water level or pressure for level controls or of time of control action (in seconds) for time-based controls

Details

Controls are indexed starting from 1 in the order in which they were entered into the [CONTROLS] section of the EPANET input file. Control type codes consist of the following:

EN_LOWLEVEL	0	Control applied when tank level or node pressure
		drops below specified level
EN_HILEVEL	1	Control applied when tank level or node pressure
		rises above specified level
EN_TIMER	2	Control applied at specific time into simulation
EN_TIMEOFDAY	3	Control applied at specific time of day

For pipes, a setting of 0 means the pipe is closed and 1 means it is open. For a pump, the setting contains the pump's speed, with 0 meaning the pump is closed and 1 meaning it is open at its normal speed. For a valve, the setting refers to the valve's pressure, flow, or loss coefficient, depending on valve type.

For Timer or Time-of-Day controls set the nindex parameter to 0.

For level controls, if the controlling node nindex is a tank then the level parameter should be a water level above the tank bottom (not an elevation). Otherwise level should be a junction pressure.

To remove a control on a particular link, set the lindex parameter to 0. Values for the other parameters in the function will be ignored.

Value

Returns NULL invisibly on success or raises an error or warning.

See Also

ENsetcontrol

Examples

# path to Net1.inp example file included with this package
inp <- file.path( find.package("epanet2toolkit"), "extdata","Net1.inp")  
ENopen( inp, "Net1.rpt")
ENgetcontrol(1)
ENsetcontrol(1, ctype=2, lindex=3, setting=1, nindex=0, level=54)		
ENgetcontrol(1)
ENclose() 

epanet2toolkit documentation built on May 29, 2024, 8:40 a.m.