gUpdateMessage-class {iSPlot} | R Documentation |
gUpdateMessage is a class to represent an update message. When one of the components in the model-view-controller paradigm needs to tell another component to be updated, an update message is created. For example, when the data changes, it needs to tell the views to be updated and thus, a gUpdateViewMessage object is created. Both gUpdateViewMessage and gUpdateDataMessage classes are inherited from gUpdateMessage. Although, gUpdateMessage is not a virtual class, currently no objects of class gUpdateMessage are created in package, iSPlot.
Objects can be created by calls of the form new("gUpdateMessage", ...)
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Class "gMessage"
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slot Elizabeth Whalen
gMessage-class
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gUpdateViewMessage-class
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gUpdateDataMessage-class
if (interactive()) { createControlWindow() # should load data through Open Data or Open File under the File menu data(USArrests) loadDFData(USArrests,"USArrests") # plotting the data should occur through Plot Data under the # Display menu createView(type = "plotView", dataName = "USArrests", plotType = "sPlotView", dfRows = 1:nrow(USArrests), dfColumns = 1:2) # should modify using the control window (by choosing the view mode and # then clicking on a plot) # by interacting with a plot when the view mode is color, these # functions will be called automatically modify("USArrests", Rname=c("Massachusetts","Ohio"), Cname=c("color","color"), data=c("red","green")) # create an update view message and then dispatch it so the points # that have changed will be replot plMessage<-new("gUpdateViewMessage",type="modify",Rname=c("Massachusetts", "Ohio")) handleMessage(plMessage,dataName="USArrests") # now see if the message is inherited from gMessage is(plMessage,"gUpdateMessage") }