将Python中的多个图合并为一个图

Question

您好，我正在尝试将4个图形组合在一起以相互重叠，我不确定这是如何完成的，这4个图形是plotMultiDays（MergedDataJuly）到plotMultiDays（MergedDataDec）

任何帮助都会很好。 代码如下：

MergedDataJuly=MergedData[MergedData.expiration == Date(2016,7,16)]
MergedDataAugust=MergedData[MergedData.expiration == Date(2016,8,20)]
MergedDataSep=MergedData[MergedData.expiration == Date(2016,9,17)]
MergedDataDec=MergedData[MergedData.expiration == Date(2016,12,17)]




plotMultiDays(MergedDataJuly,AgainstMarket='Yes')
plotMultiDays(MergedDataAugust,AgainstMarket='Yes')
plotMultiDays(MergedDataSep,AgainstMarket='Yes')
plotMultiDays(MergedDataDec,AgainstMarket='Yes')

plotMultiDays(MergedDataJuly)
plotMultiDays(MergedDataAugust)
plotMultiDays(MergedDataSep)
plotMultiDays(MergedDataDec)