Cogent C API and Utilities : Version 6.4
	Data Types

`HI_stVALUE`

HI_stVALUE — contains an (x,y) data tuple used by the Cascade Historian.

Synopsis

typedef struct HI_stVALUE
{
    double xaxis;
    double value;
} HI_stVALUE;

Members

`xaxis`	X data value of the tuple, typically time expressed in seconds.
`value`	Y data value of the tuple, typically the historical data of interest.

Description

This simple structure provides a generalized (x,y) data pair from which histories and queries are built. A history, being a time-series of data, uses time as the x axis and therefore interprets the structure as (time, value). Queries may also provide data vs. time, but may also provide data against some other variable.

This structure is analogous to the Cascade Historian class HI_stVALUE.