XWaveRefFromTrace

XWaveRefFromTrace (graphNameStr, traceNameStr)

The XWaveRefFromTrace function returns a wave reference to the wave supplying the X coordinates against which the named trace is displayed in the named graph window or subwindow.

Parameters

graphNameStr can be "" to refer to the top graph window.

When identifying a subwindow with graphNameStr, see Subwindow Syntax for details on forming the window hierarchy.

Details

XWaveRefFromTrace returns a null reference (see WaveExists) if the wave is not plotted versus an X wave.

graphNameStr and traceNameStr are strings, not names.

Examples

Display ywave vs xwave                  // XY graph
Print XWaveRefFromTrace("","ywave")[50] // prints xwave value at point 50

See Also

Trace Names, Programming With Trace Names

For other commands related to waves and traces: WaveRefIndexed, TraceNameToWaveRef, TraceNameList, CsrWaveRef, CsrXWaveRef.

For a description of wave references: Wave Reference Functions.

For a description of Traces: ModifyGraph.

For a discussion of Contour Traces: Contour Traces.

For commands referencing other waves in a graph: ImageNameList, ImageNameToWaveRef, ContourNameList, ContourNameToWaveRef.