Hi,
I'm a newbie and am trying to figure out the following:
- I have an N x T panel of stock returns on (N stocks, T time periods), with some missing values
- I am able to plot the cross-sectional density of returns for a given time t
- I would like to create a surface plot that combines all of the cross sectional densities - any tips here?
- Also is there any type of kernel estimation that will smooth out this plot across time? (As opposed to rougher aggregation of the individual density cross-sections).
Many thanks for any suggestions here.
Regards,
Jim M
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