-stack- and -reshape- are both fairly high-level commands. -stack- is
(extremely roughly!) a special case of -reshape-. A rough guess is that
-reshape- imposes slightly more interpretative overhead than -stack-,
but I've done no testing. It's also probably true that any specific
-reshape- only uses a small fraction of the code.
In principle, I guess you could always write a more "efficient", meaning
machine faster, alternative for any specific -reshape long-, at the cost
of leaving out various checks that could be crucial in many
circumstances. The human time cost of that would probably be far greater
than any real saving.
Nick
[email protected]
Tunga Kantarci
I have a panel variable: that is it has time series and cross section
dimensions.
I would like to produce a histogram regardless of the time dimension.
That is, I would like to pool the time dimension and then produce a
histogram.
To do this, I used the following command:
.
.
.
reshape long variablename, i(id) j(number)
I suppose one can also use the "stack" command.
I am wondering if this is an inefficient way of pooling data.
Is there a better workaround to pool data?
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