ITT Rule IDL Version 7.0 User Manual
Appendix A: Controlling iTools from the IDL Command Line
393
iTool Developer’s Guide
Selecting Items in the iTool
Selecting Items in the iTool
When you execute an operation in an iTool, the operation will be applied to the
currently selected item. You can use the Select method of the IDLitVisualization
class to ensure that the correct item is selected.
currently selected item. You can use the Select method of the IDLitVisualization
class to ensure that the correct item is selected.
To select an item, do the following:
1. Find the object’s full identifier as described in
on page 382. Note that only visualizations and annotations can be
selected.
2. Get an object reference to the object using the GetByIdentifier method of the
IDLitContainer class.
3. Call the Select method.
Example: Selecting an Item Programmatically
For example, suppose you create an iPlot tool with two plot lines, using the following
statements:
statements:
IPLOT, RANDOMU(seed, 15)*FINDGEN(15)
IPLOT, FINDGEN(15), /OVERPLOT
After these statements have been executed, the second (straight) plot line will be
selected in the tool. To select the first plot line, you would use the following
statements:
selected in the tool. To select the first plot line, you would use the following
statements:
idTool = ITGETCURRENT(TOOL=oTool)
plotIDs = oTool->FindIdentifiers('*plot*', /VISUALIZATIONS)
plotObj0 = oTool->GetByIdentifier(plotIDs[0])
plotObj0->Select
To apply the smooth operation to the first plot line (which has now been
programmatically selected), setting the value of the SHOW_EXECUTION_UI
property to 0 (False), you would use the following statements:
programmatically selected), setting the value of the SHOW_EXECUTION_UI
property to 0 (False), you would use the following statements:
idSmooth = oTool->FindIdentifiers('*smooth', /OPERATIONS)
success = oTool->DoSetProperty(idSmooth, 'SHOW_EXECUTION_UI', 0)
success = oTool->DoAction(idSmooth)