whatsnew8_2.hlp

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3.  {help bootstrap}, {help jknife}, {help permute}, {help simulate}, and
    {help statsby} now {help more:set more off} before looping.

{p 5 9 2}
{* enhancement}
4.  {help dotplot} has the new {cmd:over()} option, which is a synonym for the
    {cmd:by()} option.

{p 5 9 2}
{* enhancement}
5.  {help dstdize} now returns the standard errors and confidence intervals in
    the matrices {cmd:r(se)}, {cmd:r(lb)}, and {cmd:r(ub)}.

{p 5 9 2}
{* enhancement}
6.  {help graph combine} has a new option, {cmd:altshrink}, that provides an
    alternate sizing of the text, markers, line thickness, and line patterns
    on the individual combined graphs; see help {help graph combine}.

{p 5 9 2}
{* fix}
7.  {help mfx} has been changed as follows.

{p 9 13 2}
    a.  {cmd:mfx} is no longer allowed after {help boxcox} or {help vec}.

{p 9 13 2}
    b.  {cmd:mfx} displays links to an explanation when it is unsuitable for
        computing the marginal effects or standard errors.

{p 9 13 2}
    c.  {cmd:mfx} displays {cmd:e(cmd2)} as the estimation command instead of
        {cmd:e(cmd)} when {cmd:e(cmd2)} is present.

{p 9 13 2}
    d.  {cmd:mfx} now displays an error message if the {cmd:eqlist()} option
        is used and equation names contain spaces.

{p 9 13 2}
    e.  {cmd:mfx} leaves {cmd:r()} empty at completion.  {cmd:mfx} continues
        to return results to {cmd:e()}.

{p 9 13 2}
    f.  {cmd:mfx} gave incorrect standard errors when using the linear method
        on models that contained a constant equation before an equation
        containing variables; this has been fixed.

{p 9 13 2}
    g.  {cmd:mfx} failed to complete if the model contained an equation with
        all coefficients at zero; this has been fixed.

{p 5 9 2}
{* fix}
8.  {help frontier:predict, te} after fitting a model with {help frontier} in
    which both the {cmd:uhet()} and {cmd:vhet()} options were specified exited
    with an error; this has been fixed.

{p 5 9 2}
{* fix}
9.  {help tabi} produced an appropriate error message but left the returned
    error code {cmd:_rc} as 0 in some cases; this has been fixed.

{p 4 9 2}
{* fix}
10.  {help truncreg} refused to fit a constant-only model; this has been
     fixed.

{p 4 9 2}
{* fix}
11.  {help xtdes} declared that the observations were not unique for the id by
     time grid if the width of the participation pattern exceeded the value of
     the {cmd:width()} option.


{hline 8} {hi:update 27jul2004} {hline}

    {title:Ado-files}

{p 5 9 2}
{* fix}
1.  {help _get_diparmopts}, a programmer's tool for estimation commands, now
    handles models with a large number of model parameters.  Correspondingly,
    {help svar} no longer exits with an obscure error message when fitting
    models with a large number of parameters.

{p 5 9 2}
{* enhancement}
2.  {help archlm} now allows a single panel from a panel dataset to be
    specified with an {help if} or {help in} qualifier.

{p 5 9 2}
{* fix}
3.  {help blogit} and {help bprobit} now issue a more informative error
    message when either {it:pos_var} or {it:pop_var} is not integer valued.

{p 5 9 2}
{* fix}
4.  {cmd:predict}, after {help xtlogit}, {help xtprobit}, and {help xtcloglog}
    for fitting random effects models, ignored the {cmd:if} and {cmd:in}
    qualifiers; this has been fixed.

{p 5 9 2}
{* fix}
5.  {help stcurve}, after {help streg} or {help stcox} with {help pweights},
    issued an error stating that {cmd:pweights} were not allowed, even
    though they were allowed when fitting the original model.  {cmd:stcurve}
    has been fixed to allow {cmd:pweights} and handle them properly.

{p 5 9 2}
{* fix}
6.  {help xttobit} ignored the {cmd:noskip} option; this has been fixed.


{hline 8} {hi:update 23jul2004} {hline}

{p 4 4 2}
The 23jul2004 update includes extensions to Stata's time-series capabilities,
including new commands for fitting and analyzing cointegrated vector
error-correction models (VECMs); see help {help vecintro}.  Several
postestimation commands for use after estimating vector autoregressions (VARs)
and structural VARs have been renamed to better reflect their function.  These
new time-series features are documented in a second edition of the Stata
Time-Series Reference Manual; see
{browse "http://www.stata.com/bookstore/ts.html"}.

{p 4 4 2}
A list of the other ado-file and executable updates for this update is
included after the description of the time-series updates.


    {title:Time-series update}

{p 5 9 2}
{* enhancement}
1.  The new command {help vec} fits cointegrated vector error-correction
    models (VECMs) using Johansen's method; see help {help vec}.

{p 5 9 2}
{* enhancement}
2.  The new command {help vecrank} produces statistics used to determine the
    number of cointegrating vectors in a VECM, including Johansen's trace and
    maximum-eigenvalue tests for cointegration; see help {help vecrank}.

{p 5 9 2}
{* enhancement}
3.  The new command {help fcast}, which replaces the old command
    {cmd:varfcast}, produces and graphs dynamic forecasts of the dependent
    variables after fitting a VAR, SVAR, or VECM; see help {help fcast}.

{p 5 9 2}
{* enhancement}
4.  The new command {help irf}, which replaces the old command {cmd:varirf},
    does everything the old command did and more.  {cmd:irf} estimates the
    impulse-response functions, cumulative impulse-response functions,
    orthogonalized impulse-response functions, structural impulse-response
    functions, and forecast error-variance decompositions after fitting a VAR,
    SVAR, or VECM.  {cmd:irf} can also make graphs and tables of the results.
    See help {help irf}.

{p 9 9 2}
    {cmd:varirf} continues to work but is no longer documented.  {cmd:irf}
    accepts {cmd:.vrf} result files created by {cmd:varirf}.

{p 5 9 2}
{* enhancement}
5.  The new command {help veclmar} computes Lagrange-multiplier statistics for
    autocorrelation after fitting a VECM; see help {help veclmar}.

{p 5 9 2}
{* enhancement}
6.  The new command {help vecnorm} tests whether the disturbances in a VECM
    are normally distributed.  For each equation, and for all equations
    jointly, three statistics are computed: a skewness statistic, a kurtosis
    statistic, and the Jarque-Bera statistic.  See help {help vecnorm}.

{p 5 9 2}
{* enhancement}
7.  The new command {help vecstable} checks the eigenvalue stability condition
    after fitting a VECM; see help {help vecstable}.

{p 5 9 2}
{* enhancement}
8.  The new command {help vecstable} and the existing command {help varstable}
    have a graph option that produces publication-quality graphs to facilitate
    interpreting and presenting the stability results.  See help
    {help vecstable} and help {help varstable}.

{p 5 9 2}
{* enhancement}
9.  The output of the following commands has been standardized for easier
    understanding:  {help var}, {help svar}, {help vargranger},
    {help varlmar}, {help varnorm}, {help varsoc}, {help varstable}, and
    {help varwle}.


    {title:Additional ado-files}

{p 4 9 2}
{* fix}
10.  {help ac}, {help bgodfrey}, {help corrgram}, {help cumsp}, {help dfgls},
     {help dfuller}, {help durbina}, {help dwstat}, {help pac},
     {help pergram}, {help pperron}, {help wntestb}, {help wntestq}, and
     {help xcorr} now allow a single panel from a panel dataset to be
     specified with an {help if} or {help in} qualifier.

{p 4 9 2}
{* fix}
11.  {help glm:glm, irls} quietly ignored {help ml}-specific {help maximize}
     options; this has been fixed.

{p 4 9 2}
{* fix}
12.  {help sw}, when used with {help clogit}, did not allow the {cmd:strata()}
     option as a synonym for {cmd:group()}; this has been fixed.

{p 4 9 2}
{* fix}
13.  {help xi}{cmd::} {it:command ...} run under version 6 or earlier,
     produced indicator variables appropriate for the calling version but
     ignored the calling version when executing {it:command}, instead running
     {it:command} under version 7.  {cmd:xi} now runs {it:command} under the
     calling version.


    {title:Stata executable, all platforms}

{p 4 9 2}
{* enhancement}
14.  A menu item, 'Back', has been added to the {help viewer:Viewer's}
     contextual menu that appears when you right-click on the window.  It does
     the same thing as the 'Back' button on the Viewer.

{p 4 9 2}
{* enhancement}
15.  {cmd:VERSION} in {help dialogs:.dlg} files now takes an optional list of
     operating systems after the version number.  Any combination of
     {cmd:WINDOWS}, {cmd:MACINTOSH}, or {cmd:UNIX} may be specified.  The
     dialog will then be displayed only on the specified operating system(s).
     By default, a dialog may be displayed on any operating system.

{p 4 9 2}
{* enhancement}
16.  The maximum number of description lines in a {help usersite:stata.toc}
     file has been increased from 10 to 50.

{p 4 9 2}
{* fix}
17.  {help anova:anova, sequential}, with the "{cmd:/}" syntax for specifying
     error terms, produced incorrect F statistics; this has been fixed.

{p 4 9 2}
{* enhancement}
18.  {help clogit} has new options {cmd:robust} and {cmd:cluster()}; see help
     {help clogit}.  In addition, {cmd:clogit} has been converted from a
     built-in command to one that now uses {help ml}.  As a result,
     {cmd:clogit} now supports options that are available to
     {cmd:ml}-programmed estimators, such as {cmd:constraint()} for linear
     constraints.

{p 4 9 2}
{* fix}
19.  When {help delimit:#delimit ;} was on, {cmd://} comment lines without a
     leading space resulted in an error; this has been fixed.

{p 4 9 2}
{* fix}
20.  {help factor:factor, ml} with collinear variables entered an endless
     loop.  Now it presents an error message.

{p 4 9 2}
{* fix}
21.  {help infix}, when incorrectly specified without {cmd:using}, caused
     Stata to crash; this has been fixed.

{p 4 9 2}
{* fix}
22.  {help kdensity} and {help twoway kdensity} exited with an uninformative
     error message when supplied with a variable that did not vary; this has
     been fixed.

{p 4 9 2}
{* fix}
23.  {help label variable} and {help label data}, when given a label longer
     than the maximum allowed label length, truncated the label without
     warning.  A warning message is now displayed.

{p 4 9 2}
{* fix}
24.  {help rotate} caused Stata to crash if a negative number was supplied in
     the {cmd:factor()} option; this has been fixed.

{p 4 9 2}
{* fix}
25.  {help score}, in rare cases, did not set the generated variable to a
     missing value in an observation where one or more of the variables
     involved in the preceding {help pca} command had missing values; this has
     been fixed.


    {title:Stata executable, Windows}

{p 4 9 2}
{* enhancement}
26.  When the Command window has the keyboard focus, you can press the Up or
     Down cursor keys in combination with the Shift key to scroll through the
     Results window a line at a time.  You can also press the Page Up and Page
     Down keys in combination with the Shift key to scroll through the Results
     window a page at a time.

{p 4 9 2}
{* fix}
27.  {help shell} could not pass quoted arguments to a program installed in a
     path containing a space; this has been fixed.


    {title:Stata executable, Macintosh}

{p 4 9 2}
{* enhancement}
28.  The maximum number of controls in Stata's old-style dialog programming
     language has been raised to 300 to be consistent with the Windows and
     Unix (GUI) versions of Stata.  Stata users are still encouraged to use
     the new {help dialogs:dialog programming language} when programming
     dialogs, as the old-style dialogs have been deprecated.

{p 4 9 2}
{* fix}
29.  In some cases, the Graph window automatically resized beyond the
     resolution of the screen, preventing the window from being resized
     manually; this has been fixed.

{p 4 9 2}
{* fix}
30.  The zoom control in the window titlebar has been reworked so that the
     ideal window state for a window that is to be zoomed is optimal for the
     current window.  For example, clicking on the zoom box in the Results
     window or {help viewer:Viewer} will resize the window so that it is 80
     characters wide and uses the full height of the screen (adjusted to the
     nearest line height).  Clicking on the zoom control in the
     {help edit:Data Editor} will result in the editor taking up the whole
     screen.  Clicking on the zoom control in the Graph window will result in
     the current graph taking up as much of the screen as possible while
     maintaining the correct aspect ratio.  Clicking on the zoom control again
     will restore the window to its previous state.

{p 4 9 2}
{* fix}
31.  Printing from Stata could potentially lead to a crash; this has been
     fixed.

{p 4 9 2}
{* fix}
32.  When printing multiple pages from the {help doedit:Do-file Editor}, page
     margins after the first page were smaller on all sides; this has been
     fixed.


    {title:Stata executable, Unix}

{p 4 9 2}
{* fix}
33.  A command that saved a file with a path having tilde "{cmd:~}" as the
     first character without the {cmd:replace} option overwrote the file
     without generating an error or warning; this has been fixed.

{p 4 9 2}
{* fix}
34.  (GUI) If a do-file was executed by starting Stata with command-line
     arguments, the scrollbar of the Results window would not be in sync with
     the number of lines outputted in the Results window; this has been fixed.