HTScrollLeft() Function

The HTScrollLeft() function sets the start time of the trend to an earlier time than the current start time by a percentage of the trend's total time span. The effect is to scroll the chart to the left to an earlier time by a specified percentage of the trend’s total time span.

Category

Historical

Syntax

HTScrollLeft(Hist_Tag,Percent);

Arguments

Hist_Tag

HistTrend tag assigned the name of the trend.

Percent

Real number representing the percentage of the chart’s time span to scroll (0.0 to 100.0) left.

Example

The following statement scrolls the time/date left by 10 percent of the PumpPress trend’s total width:

HTScrollLeft("PumpPress",10.0);

If the current display starts at 12:00:00 PM and the display width is 60 seconds, then the new trend starts at 11:59:54 AM after the function is processed.