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graph with gap in single line

Hi, did any know how to plot out a graph with gap during the time there have no data. the graph should continue to plot in a same line when have some data in the database. eg within a week time, there is no data on wed. so the graph should show a gap on wed.
i try to empty the data value, but the graph will plot 0 for me when the data is empty.
Hope u can help me to solve this problem
 
 
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Message 1 of 2
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Use NaN instead of zero and you'll get a gap. 🙂
 
(To create a NaN diagram constant, simply create a DBL diagram constant and type nan in it.)
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