Do something to waves in marquee

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This code permits the user to select a subset of waves in a graph by drawing a marquee around them, then choosing a command from the marquee menu that is executed on that subset of waves. The example here highlights the selected waves, but lots of other possibilities exist, such as deleting the waves, averaging them, hiding them, ....


#pragma rtGlobals=1		// Use modern global access method.
#include <Execute Cmd On List>  
 
Menu "GraphMarquee"
	"Do something to Waves in Marquee"
	"Do something else to Waves in Marquee"
End
 
Function pointInBox(px,py,bl,bt,br,bb)	// determine if point is in box
	variable px,py,bl,bt,br,bb
 
	return((px>bl && br>px) && (py>bb && bt>py))
End
 
Function waveThroughBox(w,bl,bt,br,bb)	// determine if wave w goes through box
	wave w
	variable bl,bt,br,bb
 
	variable pt,px
	for(pt=0;numpnts(w)>pt;pt+=1)
		px=DimOffset(w,0)+DimDelta(w,0)*pt
		if(pointInBox(px,w[pt],bl,bt,br,bb))
			return 1
		endif
	endfor
	return 0
End
 
Function/S WavesinBox(bl,bt,br,bb)	// get list of waves passing through box
	variable bl,bt,br,bb
 
	string retlst,aWv,wvl=WaveList("*",";","WIN:")
	retlst=""
	variable i
	for(i=0;ItemsinList(wvl)>i;i+=1)
		aWv=StringFromList(i,wvl)
		wave wv=$aWv
		if(waveThroughBox(wv,bl,bt,br,bb))
			retlst+=aWv+";"
		endif
	endfor
	return retlst
End
 
Function DoSomethingToWavesInMarquee()	// here, just highlighting traces
 
	GetMarquee/K left,bottom
	string waves2highlight=WavesinBox(V_left,V_top,V_right,V_bottom)
	ExecuteCmdOnList("ModifyGraph lsize(%s)=3",waves2highlight)
End
 
Function DoSomethingElseToWavesInMarquee()	// here, just reversing highlighting of traces
 
	GetMarquee/K left,bottom
	string waves2highlight=WavesinBox(V_left,V_top,V_right,V_bottom)
	ExecuteCmdOnList("ModifyGraph lsize(%s)=1",waves2highlight)
End
 
 
 
Function TestMarqueeWaves()	// just puts some waves into a graph onto which one can draw a marquee and highlight some of the waves
 
	variable nwaves=10
	variable i
	string awv
	Display/W=(200,200,600,600)
	for(i=0;nwaves>i;i+=1)
		awv="w"+Num2Str(i)
		Make/O/N=100 $awv=gnoise(1)
		Smooth 11,$awv
		AppendtoGraph $awv
		ModifyGraph rgb($awv)=(65535*i/nwaves,65535*(1-i/nwaves),332767)
	endfor
	ModifyGraph mode=0
End

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