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ValueZoomMode - property of object TrendsView

Description:
Value axis range setup method. The range is always defined by the trend properties ValueMin and ValueMax. In some modes the values of ValueMin or ValueMax properties are modified automatically based on the values of points currently being displayed.
Syntax:
ValueZoomMode As Long
Calling:
oTView.ValueZoomMode = 4
Values:
1 (default) - The properties ValueMin and ValueMax are not set automatically.
2 - The ValueMin property is set automatically as minimum of the values of displayed points of this trend. The ValueMax property is not set automatically.
3 - The ValueMin property is not set automatically. The ValueMax property is set automatically as maximum of the values of displayed points of this trend.
4 - Both properties ValueMin and ValueMax are set automatically as minimum/maximum of the values of displayed points of this trend.
5 - The ValueMin property is set automatically as minimum of the values of displayed points of all trends (ValueMin is the same for all trends). The ValueMax property is not set automatically.
6 - The ValueMin property is not set automatically. The ValueMax property is set automatically as maximum of the values of displayed points of all trends (ValueMax is the same for all trends).
7 - Both properties ValueMin and ValueMax are set automatically as minimum/maximum of the values of displayed points of all trends (ValueMin and ValueMax are the same for all trends).
Note:
Property access for read and write. The preset value of this property is defined in the "Value axis range" configurator of this object.

The property is used only if the graphic mode is set.

In order to make the modification visible after write, it is necessary to call the Draw method.

 
Reading from ValueMin or ValueMax gets currently valid values (calculated or entered).
 
The Range of displayed value scale is always determined by the value axis (by current values of properties ValueMin and ValueMax) of the trend that is currently active (see TrendsView.TrendActive).
PROMOTIC 8.3.26 SCADA system documentation - MICROSYS, spol. s r.o.

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