These functions are used to manage a project. More...

Functions
int	EN_createproject (EN_Project *ph)
	Creates an EPANET project. More...

int	EN_deleteproject (EN_Project ph)
	Deletes a currently opened EPANET project. More...

int	EN_runproject (EN_Project ph, const char inpFile, const char rptFile, const char outFile, void(pviewprog)(char *))
	Runs a complete EPANET simulation. More...

int	EN_init (EN_Project ph, const char rptFile, const char outFile, int unitsType, int headLossType)
	Initializes an EPANET project. More...

int	EN_open (EN_Project ph, const char inpFile, const char rptFile, const char *outFile)
	Opens an EPANET input file & reads in network data. More...

int	EN_getcount (EN_Project ph, int object, int *count)
	Retrieves the number of objects of a given type in a project. More...

int	EN_gettitle (EN_Project ph, char out_line1, char out_line2, char *out_line3)
	Retrieves the title lines of the project. More...

int	EN_settitle (EN_Project ph, char line1, char line2, char *line3)
	Sets the title lines of the project. More...

int	EN_saveinpfile (EN_Project ph, const char *filename)
	Saves a project's data to an EPANET-formatted text file. More...

int	EN_close (EN_Project ph)
	Closes a project and frees all of its memory. More...

Overview

These functions are used to manage a project.

Function Documentation

◆ EN_close()

int EN_close ( EN_Project ph )

Closes a project and frees all of its memory.

Parameters

ph	an EPANET project handle.

Returns: Error code

This function clears all existing data from a project but does not delete the project, so it can be re-used with another set of network data. Use EN_deleteproject to actually delete a project from memory.

◆ EN_createproject()

int EN_createproject ( EN_Project * ph )

Creates an EPANET project.

Parameters

[out] ph an EPANET project handle that is passed into all other API functions.

Returns: an error code.

EN_createproject must be called before any other API functions are used.

◆ EN_deleteproject()

int EN_deleteproject ( EN_Project ph )

Deletes a currently opened EPANET project.

Parameters

[in,out] ph an EPANET project handle which is returned as NULL.

Returns: an error code.

EN_deleteproject should be called after all network analysis has been completed.

◆ EN_getcount()

int EN_getcount	(	EN_Project	ph,
		int	object,
		int *	count
	)

Retrieves the number of objects of a given type in a project.

Parameters

	ph	an EPANET project handle.
	object	a type of object to count (see EN_CountType)
[out]	count	number of objects of the specified type

Returns: an error code

◆ EN_gettitle()

int EN_gettitle	(	EN_Project	ph,
		char *	out_line1,
		char *	out_line2,
		char *	out_line3
	)

Retrieves the title lines of the project.

Parameters

	ph	an EPANET project handle.
[out]	out_line1	first title line
[out]	out_line2	second title line
[out]	out_line3	third title line

Returns: an error code

◆ EN_init()

int EN_init	(	EN_Project	ph,
		const char *	rptFile,
		const char *	outFile,
		int	unitsType,
		int	headLossType
	)

Initializes an EPANET project.

Parameters

ph	an EPANET project handle.
rptFile	the name of a report file to be created (or "" if not needed).
outFile	the name of a binary output file to be created (or "" if not needed).
unitsType	the choice of flow units (see EN_FlowUnits).
headLossType	the choice of head loss formula (see EN_HeadLossType).

Returns: an error code.

This function should be called immediately after EN_createproject if an EPANET-formatted input file will not be used to supply network data. If the project receives it's network data from an input file then there is no need to call this function.

◆ EN_open()

int EN_open	(	EN_Project	ph,
		const char *	inpFile,
		const char *	rptFile,
		const char *	outFile
	)

Opens an EPANET input file & reads in network data.

Parameters

ph	an EPANET project handle.
inpFile	the name of an existing EPANET-formatted input file.
rptFile	the name of a report file to be created (or "" if not needed).
outFile	the name of a binary output file to be created (or "" if not needed).

Returns: an error code.

This function should be called immediately after EN_createproject if an EPANET-formatted input file will be used to supply network data.

◆ EN_runproject()

int EN_runproject	(	EN_Project	ph,
		const char *	inpFile,
		const char *	rptFile,
		const char *	outFile,
		void()(char )	pviewprog
	)

Runs a complete EPANET simulation.

Parameters

ph	an EPANET project handle.
inpFile	the name of an existing EPANET-formatted input file.
rptFile	the name of a report file to be created (or "" if not needed)
outFile	the name of a binary output file to be created (or "" if not needed)
pviewprog	a callback function that takes a character string (char *) as its only parameter.

Returns: an error code

The callback function should reside in and be used by the calling code to display the progress messages that EPANET generates as it carries out its computations. Here is an example of a such a function that displays progress messages to stdout:

void  writeConsole(char *s)
{
    fprintf(stdout, "\n%s", s);
}

It would be passed into EN_runproject as &writeConsole. If this feature is not needed then the pviewprog argument should be NULL.

◆ EN_saveinpfile()

int EN_saveinpfile	(	EN_Project	ph,
		const char *	filename
	)

Saves a project's data to an EPANET-formatted text file.

Parameters

ph	an EPANET project handle.
filename	the name of the file to create.

Returns: Error code

◆ EN_settitle()

int EN_settitle	(	EN_Project	ph,
		char *	line1,
		char *	line2,
		char *	line3
	)

Sets the title lines of the project.

Parameters

ph	an EPANET project handle.
line1	first title line
line2	second title line
line3	third title line

Returns: an error code

Functions

Overview

Function Documentation

◆ EN_close()

◆ EN_createproject()

◆ EN_deleteproject()

◆ EN_getcount()

◆ EN_gettitle()

◆ EN_init()

◆ EN_open()

◆ EN_runproject()

◆ EN_saveinpfile()

◆ EN_settitle()