Step 1: Create a simple line chart using a date dimension and measure. In the given example it is Order date as Year (Date dimension) and Sum of sales as a measure.
Step 2: Change the date dimension to continuous date dimension and make it as Month of order date.
Step 3: Put one more sales measure in the rows shelf and make it as dual axis
Step 4: Change the chart type to area using the marks card.
Step 5: Format the chart and here we go with all new line chart and a different way of showing the line chart. Mind you it is not an area chart. To explore more please add other dimension in color and play around with it.
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