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Stata 软件更新到了 10.1 (11 Aug. 2008 补丁) |
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2008-08-15
广州博脉 |
Stata 10 可执行文件和 ado 文件都已更新到 11 Aug. 2008 的最新补丁，如您能在 Stata 中直接连接 StataCorp 的服务器，请使用 update all 命令进行自动更新。
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如果不能在 Stata 中直接连接服务器，请参照下面的页面，进行手动更新：
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Stata 10 可执行文件手动更新说明
Stata 10 ado 文件手动更新说明
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___11 Aug. 2008 补丁更新内容___
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What's new in release 10.1 (compared with release 10.0)
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Highlights for release 10.1 include the following:
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o Distribution and probability mass functions for the hypergeometric, negative binomial, and Poisson distributions have
been added to Stata. The probability mass function for the binomial distribution has also been added. See density
functions. Additionally, Mata now has these functions; see mata normal().
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o Random-variate functions for the beta, binomial, chi-squared, gamma, hypergeometric, negative binomial, normal,
Poisson and Student's t distributions have been added to Stata; see random-number functions. Additionally, Mata now
has these random-variate functions; see mata runiform().
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uniform() has been renamed to runiform() in order to be consistent with the naming convention of the nonuniform random
variate functions. uniform() continues to work, but is now undocumented. Mata functions uniform() and uniformseed()
have been renamed to runiform() and rseed().
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o asmprobit and asroprobit have several new features including option factor(#) specifying use of a factor covariance
structure which models the covariance as I + C'C. Postestimation command estat facweights displays the covariance
factor weights in matrix form.
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o reshape now preserves the J variable value and variable labels and all xij variable labels when reshaping from wide to
long and back to wide.
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o pwcorr has new option listwise, which specifies that missing values are to be handled by listwise deletion, allowing
users of pwcorr to mimic correlate's treatment of missing values while maintaining access to all of pwcorr's features.
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o Initialization Mata functions ghk_init() and ghkfast_init() as well as several other helper functions have been added
to construct, modify, and query structures defining simulation parameters and creating simulation points for
subsequent calls to ghk() and ghkfast().
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We recommend that you set version to version 10.1 at the top of new do-files and ado-files. See help version.
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Ado-files
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1. asmprobit and asroprobit have a new covariance structure. Option factor(#) specifies to use the factor covariance
structure. For a model with J alternatives, the # x J factor matrix C, # smaller than J, models the covariance as I +
C'C, where I is a J x J identity matrix.
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2. asmprobit and asroprobit have a new option favor(speedspace) that directs the programs to favor either speed or space
(memory) when executing. favor(speed) is the default.
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3. asmprobit and asroprobit have a new option nopivot that will direct the programs not to pivot integration intervals so
that wider intervals are on the inside of the multivariate integration. This option may be useful when fitting a model
with few simulation points.
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4. biplot did not honor if or in qualifiers when computing means (and standard deviations with option std) used in the
computations. This has been fixed.
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5. bootstrap and jackknife removed the vce() option when it was specified on the command being bootstrapped or jackknifed,
resulting in calculations based on the conventional standard errors and covariances instead of the requested
alternative. This has been fixed.
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6. canon's default output has changed. canon now displays matrices of raw coefficients by default. canon no longer
documents option coefmatrix which specified the display of matrices of raw coefficients. Setting version to less than
10.1 will display the raw coefficients, conditionally estimated standard errors and confidence intervals in the standard
estimation table by default; this output can also be obtained by using the new stderr option.
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7. dstdize reported large population totals rounded to floating point precision. This has been fixed.
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8. egen function mode() with option missing now treats missing values as a category when finding the mode. The options
minmode, maxmode, and nummode() can now be specified with and without the missing option for the desired mode. When
version is set to less than 10.1 with option missing, missing values are not treated as a category.
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9. egen functions total() and rowtotal() have new option missing. With this option, if all values of exp or varlist for an
observation are missing, then that observation in newvar will be set to missing.
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10. New postestimation command estat facweights after asmprobit, factor(#) and asroprobit, factor(#) displays the covariance
factor weights in matrix form.
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11. The dialog box for fdasave did not place quotation marks around the path and filename, causing an error when the path or
filename contained spaces. This has been fixed.
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12. In the Graph Editor when editing a bar graph that had been created with the by option, the Sort button of both the
Contextual Toolbar for the bar region and the properties dialog for the bar region failed to sort the graph's bars.
This has been fixed.
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13. The dialog box for graph twoway now allows plots to be reordered when multiple plots have been defined.
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14. ivregress, when a heteroskedasticity-and-autocorrelation consistent VCE or weight matrix was requested with the Bartlett
kernel and Newey and West's optimal bandwith selection algorithm, could report incorrect standard errors. When the GMM
estimator was used, the point estimates could also be incorrect. This has been fixed. Whether one observes changes in
output as a result of this bug fix is data dependent.
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15. Mata functions ghk() and ghkfast() have a new syntax. Initialization functions ghk_init() and ghkfast_init() as well as
several helper functions have been added to construct, modify, and query structures defining simulation parameters and
creating simulation points for subsequent calls to ghk() and ghkfast().
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16. pwcorr has new option listwise, which specifies that missing values are to be handled by listwise deletion, that is,
observations containing missing values for any of the given variables are removed from the estimation sample before any
calculations take place. By default pwcorr uses pairwise deletion, under which the correlation calculation for each
variable pair uses all available data without regard to missing values outside that variable pair.
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Specifying listwise allows users of pwcorr to mimic correlate's treatment of missing values while maintaining access to
all of pwcorr's features.
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17. reshape now preserves the J variable value and variable labels and all xij variable labels when reshaping from wide to
long and back to wide. Previous behavior is obtained by setting version to less than 10.1.
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18. roctab and roccomp, although r-class commands, left information in the ereturn list from calls they made to the logistic
command. This has been fixed.
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19. stpower did not allow spaces in file names specified in option saving(). This has been fixed.
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20. svy's descriptive statistics commands (svy: mean, svy: proportion, svy: ratio, and svy: total) were marking out
observations that had missing values in the variable list for observations outside the subpopulation. This affects the
estimated variance values when the primary sampling units were the individual observations and could decrease the design
degrees of freedom. Both of these effects are very slight and inversely related to the sample size. This has been
fixed.
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21. svy did not allow the missing() function to be specified in the if expression within the subpop() option. This has been
fixed.
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22. xthtaylor, when used with a sufficient number of perfectly collinear covariates, would drop different variables when the
same command was repeatedly run. This has been fixed.
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23. xtgee, when used with corr(fixed matname), deleted matrix matname. This has been fixed.
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24. xtmelogit and xtmepoisson now support the maximize option from(); see maximize. This allows users to specify starting
values, which can significantly speed up estimation. For these two commands, from() is particularly useful when
combined with refineopts(iterate(0)), which bypasses the initial optimization stage.
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25. As of Stata 10.1, xtmixed, xtmelogit, and xtmepoisson now require that random-effects specifications contain an explicit
level variable (or _all) followed by a colon. Previously, if these were omitted a level specification of _all: was
assumed, leading to confusion when only the colon was omitted. To avoid this confusion, omitting the colon now produces
an error, with previous behavior preserved under version control.
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26. xtreg with option be, when used with regressors that included time-series operators, would exit with an error message
saying "time-series operators not allowed." Now, time-series operators are allowed.
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Stata executable, all platforms
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27. Distribution and probability mass functions for the hypergeometric, negative binomial, and Poisson distributions have
been added to Stata. The probability mass function for the binomial distribution has also been added. See density
functions. Additionally, Mata now has these functions; see mata normal().
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28. Random-variate functions for the beta, binomial, chi-squared, gamma, hypergeometric, negative binomial, normal, Poisson
and Student's t distributions have been added to Stata; see random-number functions. Additionally, Mata now has these
random-variate functions; see mata runiform().
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29. Function uniform() has been renamed to runiform() in order to be consistent with the naming convention of the nonuniform
random variate functions. uniform() continues to work, but is now undocumented. Mata functions uniform() and
uniformseed() have been renamed to runiform() and rseed().
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30. Old function Binomial() is no longer allowed (as of Stata 10.1); binomialtail() should be used instead. Binomial() is
allowed when version is set to less than 10.1.
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31. drawnorm now uses the new rnormal() function to generate normal random variates. When version is set to less than 10.1,
drawnorm reverts to using invnormal(uniform()).
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32. Mata's addition colon operator, :+, crashed Stata if one of the arguments was a void string matrix. This has been
fixed.
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33. Mata function hash1(x, n) returned n+1 for certain x and n. This has been fixed.
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34. Mata function strofreal() returned different results depending on the style of decimal point setting. This has been
fixed.
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35. mlmatbysum now checks for string variables in the by() option. String variables are not allowed in this option.
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36. odbc insert with option create now writes Stata doubles as SQL data type FLOAT(53) instead of REAL. Most of the time in
SQL the REAL data type maps to a 4 byte float so on SQL Server, for example, there was a loss of precision for all
doubles.
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37. oneway with a constant response_var and option bonferroni, scheffe, or sidak produced invalid p-values in the comparison
table. For larger datasets, Stata stopped responding while oneway was in the middle of producing the comparison table.
This has been fixed.
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38. stcox now allows a maximum of 100 variables to be specified in option tvc(). The previous limit was 10.
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Stata executable, Windows
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39. postfile with option every() did not cause post to write results to disk as often as was specified in every(). This has
been fixed.
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40. The Do-File editor did not allow printing a selection. This has been fixed.
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41. When grid editing in the graph editor, dragging an object into another cell did not highlight the target cell properly.
Now the target cell is shown in a darker translucent red, which is consistent with Stata for Mac OS and Unix.
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Stata executable, Macintosh
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42. You may now disable keyboard navigation in the Variables and Review windows from the General Preferences dialog. See
revkeyboard or varkeyboard for more information.
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43. Pressing cmd-left arrow and cmd-right arrow in the Command window will now move the cursor to the beginning of a line
and to the end of a line, respectively.
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Stata executable, Unix
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44. printer define now allows up to 100 defined printers. The previous limit was 10.
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45. Previously, when opening an existing do-file using File > Open from an existing Do-file Editor window, the do-file to be
opened would replace the contents of the existing Do-file Editor window regardless of whether the existing window had
been saved or not. Stata now always opens an existing do-file in a new window. The Open Recent menu would display some
characters as underlined if a filename contained an underscore. This has been fixed. The Open Recent menu in a new
Do-file Editor window would not show the most recent file added to the menu. This has been fixed. |
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