Hello! Could you help me with the following?
I have time series data with 255 variables.
I have to convert all 255 companies' rate of return daily data to monthly data from 2004 to 2016. I have done it with one variable using proc expand
proc expand data=work.risk
But how can I use this to matrix data with 255 variables. The data looks like this. There are only 3 companies shown. I have to use the program to 255 companies.
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