# Facebook isWorkoutDay: boolean If a data point is 0 don't create the poly line... not sure how to do this just yet. You could do something similar where if there is a zero it breaks the data points into multiple arrays. But if you do this... you'll have to graph each line separately You can only connect effort data points for workout days.. --- I like the best option as workout days are either filled or use a kettelbell as the datapoint. Non workout days use a cirlce that is filled in with the graph background color... you want the appearly of only a border.