Dummy question.
I have a CSV file that contains three columns (fields), ,
2017-01-01, 10, g1
2017-01-02, 11, g1
2017-01-03, 12, g1
2017-01-01, 20, g2
2017-01-02, 21, g2
2017-01-03, 22, g2
How can I draw two linecharts with Y-axis is `` , x-axis is ``, with respect to two groups?
Thanks,
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