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Object PmgTrendViewer

Description:
See: PmgTrendViewer - Deatiled object description
 
Graphic Object used for viewing trends.
 
The whole panel containing this object used for viewing the trends including trend list table, the instrumental buttons, etc. can be easily created - see Preconfiguration "Trends viewer".
This object adopts properties and methods of object PmgObject.
Properties and methods:
Action Performs the action in the trend viewer
AddServer Registration of server into list in viewer
AddTrend Creates a new object of the tvTrend type
Autoscroll Enable/disable Autoscroll
AutoscrollRate Period of reading data in seconds while autoscroll is switched on
AutoscrollSize How much to scroll
AutoscrollSizeUnit Unit of AutoscrollSize property values
AutoscrollType Automatic scroll type
BackgroundColor Background color of the trend viewer
CompressType Evaluation type for the data compression
CursorColor Color of the cursor
CursorTime Time referring to vertical cursor line
CursorTimeColor Color of the cursor label time
CursorTimeLocation Cursor time location
CursorType Cursor type, its appearance
DataTimeout Maximum time to wait for data
DlgTrends Calling window for runtime configuration of trend viewer
Draw Redrawing of whole object
FindTrend Searching object of the tvTrend type
GetCfg Returns current values of configuration data of the viewer and displayed treds
GetState Returns viewer state
GetStateText Returns the current state of the viewer in text form
GraphInit Returns tvGraph object - initializing object for drawing
GridTime Returns object of tvGrid type (vertical lines of grid on time axis)
GridValue Returns object of the tvGrid type (horizontal lines of grid on value axis)
InsertTrend Creates a new object of the tvTrend type
LastCfgSrc Reference to recently loaded configuration file
LastCfgTitle The name of the recently loaded configuration file
LastErr Numeric code of the last risen error
LastErrText Text of the last risen error
LoadCfg Reading configuration data of viewer
PointsMaxVisibleCount Maximum number of displayed points in viewer range
ReadData Calls sending the request for current data
RemoveAllTrends Deletes all trends
RemoveTrend Removes the specified trend
SaveCfg Saving current configuration data of viewer
SaveToHtm Creates an HTML page for data of this viewer
ScaleTime Returns object of the tvScale type (time scale)
ScaleValue Returns object of the tvScale type (value scale)
ScrollTime Scroll of viewer on the time scale
ScrollValue Scroll of trend viewer on value scale
SetUserControl Enables/disables the user control of the viewer
TableHeadBgColor Background color of head in the table mode
TableHeadFont Font of head legends in the table mode
TableHeadRowHigh Height of head row in the table mode
TableHeadTextColor Color of head legends in the table mode
TableOper Setting some parameters in the table mode
TableRowHigh Height of data row in the table mode
TableTimeBgColor Background color of time column in the table mode
TableTimeColumnWidth Width of time column in the table mode
TableTimeFont Font of time column in the table mode
TableTimeFormat Format of time column values in the table mode
TableTimeFormatType Format type of time column values in the table mode
TableTimeTextColor Color of time column values in the table mode
TimeMax Time of viewer right edge
TimeMin Time of viewer left edge
TimeSetType Type of input time values in viewer methods
TimeType Type of values on horizontal axis (time or number)
TimeZoomMax Maximum limit of viewer time axis range
TimeZoomMaxForPoints Maximum limit of viewer time axis range for displaying points
TimeZoomMaxForValues Maximum limit of viewer time axis range for displaying point values
TimeZoomMin Minimum limit of viewer time axis range
TimeZoomMinForCompress Maximum range of viewer time axis range for displaying calculated points
TrendActive Index of active tvTrend object
TrendArea Returns tvTrendArea object (trends area)
Trends Returns tvTrend object
TrendsCount Returns number of tvTrend subobjects
ValueZoomMode Value axis range setup method
ViewMode Switches from/to the table mode
ZoomTime Change of range, viewer zoom on time scale
ZoomValue Zooming trends on value scale
Events:
onCursorTimeChange Is triggered when time on vertical cursor line position changed
onDataTrendReady Is triggered when viewer got data from server
onError Is triggered if error occured in viewer
onMouseArea Is triggered when user clicked into the graph drawing area by the mouse
onReadData Is triggered any time when viewer asks for new data
onTimeChange Is triggered when begin or end time of viewer changed
onTrendParamsChange Is triggered on viewer start or if basic parameter of one of the tvTrend type object has been changed
Related objects:
tvTrendArea(TrendViewer area) Object represents area where graphs are drawn
tvGraph(TrendViewer graph) The object for drawing trend
tvGrid(TrendViewer grid) Object that represents grid lines
tvPoints(TrendViewer points) Object that holds data points of trend
tvScale(TrendViewer scale) Object represents a scale
tvTicks(TrendViewer scale ticks) Object for configuration of scale ticks or grid lines layout
tvTrend(TrendsView trend) Object represents one trend variable
Configuration windows:
Object General information about the object
Content Content of the Pmg object in the XML form
Position Setting the position, width and height of the Pmg object
Variables List and configuration of user defined Pmg object variables
Events Algorithms definition for the object events
Methods Definition of designer's methods in the Pmg object
Panel Setting the background area of the Pmg object
Viewer Trend viewer basic parameters setup
Trends Create and edit a list of trends
Appearance Appearance setup of individual parts of the trend viewer.
Control Controls setup of the trend viewer

History:
Pm9.00.00: Object name changed: PmiAx-TrendsView -> PmgTrendViewer
Pm8.03.29: Fixed bug: for Web panels
Pm8.03.22: Fixed bug: in Web panels:
- Improved transition between standard and daylight saving time.
- Repeated calling of RemoveAllTrends method did not work.
- Setting the properties ValueMin and ValueMax in reversed order caused the scale to flip.
Pm8.03.20: Fixed bug: Web panels - Trends can now be viewed also from other PROMOTIC applications.
Pm8.03.17: Web panels - In Chrome browser, the configuration of trends (colours, styles etc.) is now functional.
Pm8.03.14: Web panel - in JavaScript Web panels:
- The PmgTrendViewer > Value axis grid > Line type configurator is now functional.
- Fixed bug: if tvTrend was set as invisible in the configuration file, then it was still visible on the Web.
- Fixed bug: RemoveAllTrends method generated error if no trend was present.
- showing a trend description on the cursor position now including the timestamp - see SetUserControl("click:showvaltimename(trend=all)").
Pm8.03.13: in JavaScript Web panels:
- Fixed bug: Chart of the Constant type was not rendered correctly under some conditions.
- Fixed bug: Texts rendered next to points were not appearing beneath each other but were overlaping.
Pm8.03.11: Patch fixing vulnerability of this object in HTML pages.
Pm8.03.07: Fixed bug: in JavaScript Web panels: sometimes did not render correctly in Chrome browser.
Pm8.03.06: Fixed bug: in JavaScript Web panels:
- Rendering when no trend was connected.
- Rendering when scrolling in the table mode.
Pm8.03.05: Fixed bug: While configuring the object the panel editor sometimes failed (bug since version Pm8.3.4).
Pm8.03.04: in JavaScript panels:
- Improved values rendering in trends after mouseclick.
PROMOTIC 9.0.7 SCADA system documentation - MICROSYS, spol. s r.o.

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