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st: RE: generate lognormal RV less than 20000 observations.
From
"Nick Cox" <[email protected]>
To
<[email protected]>
Subject
st: RE: generate lognormal RV less than 20000 observations.
Date
Fri, 9 Apr 2010 10:20:00 +0100
This sparked a thread with Martin Weiss. I have four comments by way of summarizing and going beyond that exchange.
1. Please do specify where user-written software you refer to comes from.
(Most postings from Sun Samn ignore advice in the FAQ in at least one way.)
2. It is quite untrue that -rndlgn- requires 20,000 observations.
3. In this case, the user-specified software is not, and never has been, needed. A one-line call with reference to -exp(rnormal())- gets you random draws from a lognormal quite directly. (Before -rnormal()- was introduced, other functions could be used, and indeed were used internally within -rndlgn-. I imagine that for their own reasons Joe Hilbe and friend wanted something uniform in syntax with the other commands that they wrote a while back.)
4. -rndlgn- is a command, not a function. -exp()- and -rnormal()- are functions.
Nick
[email protected]
sun samn
I know the function ' rndlgn' can generate lognormal RVs, but it requires the numbers of observation to be at 20000. Now, I want a list of only 500. What should I do then?
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