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st: Stata 9.1 (ado and executable update)
Stata 9.1 is now available. Stata 9 users obtain it as a free
update using Stata's -update- command (type -update- or click
"Help" and select "Official Updates" and then follow the
Highlights for release 9.1 include the following:
o Multiple log files may be opened simultaneously.
o Survey linearization is now 2 to 100 times faster, the
larger multiplier applying to large datasets with many
o The string length limit has been increased to 244 for
Intercooled and Small Stata to match Stata/SE.
o Up to 300 estimation results may be stored.
o Mata has a new permutation function making it easier
to program exact permutation tests.
o Mata has several other new features, including new
string, regular expression, and binary I/O functions.
o Graphs exported to PNG or TIFF bitmap format may now have
their sizes specified, allowing the resolution to be
greater than screen resolution.
o There is a new command for computing marginal effects
after an alternative-specific multinomial probit model.
o There is now a console version of Stata/SE for the
o Collecting statistics across a by list using the statsby
command is now allowed in more situations, including with
o Fay's adjustment is now allowed with balanced repeated
replications (BRR) for complex survey data.
After updating, type -help whatsnew- to see the full list of
improvements and fixes that are found in this update.
Ken Higbee firstname.lastname@example.org
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