It's a little difficult. You have to define the delay function yourself.

Thanks
But the basic data is {X i,t.a}，without “report_period” it is difficult to define such kind of functions

It can be processed in two steps, reading all the data first, and then cutting it yourself, although the processing speed will be slower. It will be troublesome if you use pit data, but if it is factor data, only one additional csv file is needed to store the financial report points in time, such as 0331, 0630, 0931, 1231 or 0501, 0901, 1101.

@specialuse
#343 is designed for exactly your requirements.
Please pay attention to it.

expecting
thanks

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