"curveHistory"
Assigns history Y values from a database to a curve.
Synopsis
setValue(string shape, "curveHistory", string Name, dyn_string dps);
shape.curveHistory(string Name, dyn_string dps);
Parameters
| Parameter | Description |
|---|---|
| shape | Name of the object |
| Name | Name of curve |
| dps | Label field of the Dp variables used for the Y values of a curve |
Description
This attribute is used to assign history (database) values and values currently displayed for scrolling back in the trend display. When using dpConnect(), the function should be called before the actual dpConnect() in the main() function.
Example
The following example inserts the values of DP "Value_2." as history values into "curve1".
main()
{
dyn_string ds;
ds=makeDynString("Value_2.:_original.._value");
TREND1.curveHistory("curve1", ds);
}Assignment
Trend
