python - Pandas: Group by Time, then plot density per group -


i'm trying group data frame time , plot density of variable each subgroup. i'm doing:

mydf.groupby(pd.timegrouper('as'))['myvar'].plot(kind='density')

here's result:

date 2006-01-01    axes(0.125,0.1;0.775x0.8) 2007-01-01    axes(0.125,0.1;0.775x0.8) 2008-01-01    axes(0.125,0.1;0.775x0.8) 2009-01-01    axes(0.125,0.1;0.775x0.8) 2010-01-01    axes(0.125,0.1;0.775x0.8) name: myvar, dtype: object

and plot:

output

how add correct legend plot? there's no way know line corresponds year right now.

set legend argument true:

mydf.groupby(pd.timegrouper('as'))['myvar'].plot(kind='density', legend=true)

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