Include Option to Paste Spreadsheet Row Directly as Column Wave

how about this:

menu "edit", hideable, dynamic
	TableClipMenu("Transpose Paste"), TransposePaste()
end

function /s TableClipMenu(str)
	string str
	
	if(WinType("")==2)
		return str
	endif
	return ""
end

function TransposePaste()
	
	string clip=getScrapText(), sOut=""
	variable rows=itemsinlist(clip, "\r")
	variable columns=itemsinlist(stringfromlist(0,clip,"\r"), "\t")
	variable i,j
	for(i=0;i<columns;i+=1)
		for(j=0;j<rows;j+=1)
			sOut+=stringfromlist(i,stringfromlist(j, clip,"\r"), "\t")+"\t"
		endfor
		sOut=removeEnding(sOut,"\t")
		sOut+="\r"
	endfor
	putscrapText sOut
	doIgorMenu "Edit", "Paste"
	putscrapText clip
end

Thank you. It looks interesting. Once I get back to the entire data set, I give it a test run.

Tony's solution is really helpful (especially when the menu item is given a hotkey). Thanks to you both for raising the question and addressing it!