whatsnew8_0.hlp

是一个经济学管理应用软件 很难找的 但是经济学学生又必须用到

{* fix}
1.  {help graph_bar:graph bar} and {help graph_box:graph box} ignored
    weight specifications when users specified suboptions {cmd:relabel()},
    {cmd:sort}, or {cmd:total} within options {cmd:over()} or
    {cmd:yvaroptions()}; this is fixed.

{p 5 9 2}
{* enhancement}
2.  {help graph_display:graph display} has a new {cmd:scale()} option that
    allows all text, symbols, and line widths to be rescaled when a graph is
    displayed again.

{p 5 9 2}
{* fix}
3.  {help arima:predict} with the {cmd:mse} option, if used after {help arima}
    with the {cmd:condition} option, now produces mean-squared errors that are
    based on initializing the presample MSE vector of the state vector with
    the expected long-run MSE. This is the same initialization method used to
    produce conditional estimates. Previously, the presample MSE vector was
    initialized with expected values derived from the estimated parameters,
    which is the initialization method used to produce unconditional
    estimates.  The new method is more consistent with the conditional method
    of estimation.


{hline 8} {hi:update 24apr2003} {hline}

    {title:Ado-files}

{p 5 9 2}
{* fix}
1.  {help egen:egen {it:newvar} = group()} with the {cmd:label} option would
    write over the value label named {it:newvar} if the value label already
    existed.  Now, it prompts you to use the {cmd:lname()} option to specify a
    name for the value label.

{p 5 9 2}
{* fix}
2.  {help tabodds} with {help weights} large enough to cause an overflow of
    the storage type {help int} would produce incorrect results.  Now, storage
    type {help long} is used, and the problem is fixed.


    {title:Stata executable}

{p 5 9 2}
{* enhancement}
3.  The {cmd:*} {help comments:comment indicator} can now be used in
    {help dialogs:.dlg} and .idlg files.

{p 5 9 2}
{* fix}
4.  The find string from the {help viewer:Viewer} window's Find dialog would
    sometimes be converted to lower case; this is fixed.

{p 5 9 2}
{* enhancement}
5.  Some operating systems allow read-only files to be overwritten if the
    directory is not read only.  Stata no longer allows read-only files to be
    overwritten, regardless of the directory protection.

{p 5 9 2}
{* fix}
6.  After {help dp:set dp comma}

{p 13 17 2}
    {help graph} now honors the setting and uses commas in place of decimals
    when labeling axes.

{p 13 17 2}
    {help graph} no longer draws extra-wide legends that overwrite other graph
    objects.

{p 13 17 2}
    {help serset} extended macro functions now return numbers with decimal
    points instead of commas to avoid problems in subsequent computations.

{p 13 17 2}
    {help macro:++} and {help macro:--} macro operators, when the value of the
    macro is not an integer, now return numbers with decimal points instead of
    commas to avoid problems in subsequent computations.

{p 5 9 2}
{* fix}
7.  (Windows) {help graph_export:graph export} of a {cmd:.wmf} file would fail
    if the path and filename were over 80 characters; this is fixed.

{p 5 9 2}
{* enhancement}
8.  (Windows and Unix) {help window:window manage maintitle} is a new command
    that allows users to set the main title of the Stata window; see help
    {help window}.

{p 5 9 2}
{* enhancement}
9.  (Macintosh) Keyboard shortcuts have been added for Edit->Copy Table,
    Tools->Search->Replace and Find Next, and Tools->Search->Match.

{p 4 9 2}
{* fix}
10.  (Macintosh) If the log menu became disabled, it would not be reenabled
     when Stata could again process log commands; this is fixed.

{p 4 9 2}
{* fix}
11.  (Macintosh) The Find button in the Viewer would not move when the window
     was resized; this is fixed.

{p 4 9 2}
{* fix}
12.  (Macintosh) You can now save a graph as a PNG (portable network graphics)
     file from the Save dialog.

{p 4 9 2}
{* fix}
13.  (Macintosh) Stata previously ran at a low scheduling priority when in
     batch mode.  The scheduling priority has been raised, increasing the
     execution speed.

{p 4 9 2}
{* enhancement}
14.  (Macintosh) The {cmd:-h} startup option has been added.  This option does
     not start Stata but shows the syntax diagram for invoking Stata.

{p 4 9 2}
{* fix}
15.  (Macintosh) The {cmd:-q} startup option now suppresses the Stata logo as
     well as the initialization messages.


{hline 8} {hi:update 16apr2003} {hline}

    {title:Ado-files}

{p 5 9 2}
{* enhancement}
1.  The submenu for cross-sectional time-series under the statistics menu has
    been restructured to improve access to the dialog boxes.  (This will
    take effect once you exit and restart Stata.)

{p 5 9 2}
{* fix}
2.  {help egen:egen {it:newvar} = group()} with the {cmd:label} option did not
    check to see if a value label named {it:newvar} already existed before
    creation.  Now an error message is
    presented indicating that you should use the {cmd:lname()} option to
    provide a name for the new value label.

{p 5 9 2}
{* fix}
3.  {help findfile} produced an error message if the path specified in the
    {cmd:path()} option contained spaces; this is fixed.

{p 5 9 2}
{* enhancement}
4.  {help graph} when specified with the option {cmd:scale()} now causes
    linewidths to scale in proportion to the scaling of fonts and symbols.
    This also applies to the automatic scaling by {cmd:graph, by()} and
    {cmd:graph combine}.

{p 5 9 2}
{* fix}
5.  Some error messages in {help graph} have been improved.

{p 5 9 2}
{* fix}
6.  {help histogram} and {help twoway_histogram:twoway histogram} are now much
    faster for large datasets.

{p 5 9 2}
{* enhancement}
7.  {help levels} is a new command that displays a sorted list of the distinct
    values of a variable.  This command is especially useful for looping over
    distinct values of a variable with (say) {help foreach}; see help
    {help levels}.

{p 5 9 2}
{* fix}
8.  {help ml} did not correctly compute the tolerance for the
    {cmd:nrtolerance()} option when the {cmd:nr} or {cmd:bhhh} options were
    also specified.  This could cause {help arch} and {help arima} incorrectly
    to continue iterating beyond convergence.
    This is fixed.

{p 5 9 2}
{* enhancement}
9.  {help odbc}, as of the 10apr2003 executable update, is available for
    Mac OS X and Linux systems that use the iODBC Driver Manager.  ODBC, an
    acronym for Open DataBase Connectivity, allows data to be imported into
    Stata via an ODBC data source.  More information on configuring ODBC for
    Mac and Linux can be obtained from the FAQ located at
    {browse "http://www.stata.com/support/faqs/data/odbcmu.html"}.

{p 4 9 2}
{* enhancement}
10.  The {dialog stcox} dialog has been improved.

{p 4 9 2}
{* fix}
11.  {help tabstat} with the {cmd:by()} option ignored the
     {help dfmt:date format} when displaying the {cmd:by()} variable; this is
     fixed.


{hline 8} {hi:update 10apr2003} {hline}

    {title:Stata executable}

{p 5 9 2}
{* enhancement}
1.  {help graph_intro:Graphics} are now approximately 100% faster -- they run
    in about half the time.  Some graphs demonstrate more than a 100% speedup,
    some less.
    Speedups are greatest on the second and subsequent {cmd:graph} commands
    (second
    after Stata has been started or refreshed by typing {cmd:clear} or
    {cmd:discard}).

{p 5 9 2}
{* enhancement}
2.  The {help viewer:Stata Viewer} now has the ability to search for text
    within the window.  Click on the find icon which looks like a pair of
    binoculars.  This icon is at the top right of the Viewer.

{p 5 9 2}
{* fix}
3.  {help delimit:#delimit ;} followed by a
    {help quotes:compound double quoted} string containing an odd number of
    regular double quotes would cause an error due to matching the
    beginning and ending compound double quotes incorrectly; this is fixed.

{p 5 9 2}
{* enhancement}
4.  {help graph_export:graph export} now supports PNG (portable network
    graphics) format, especially useful for posting graphs on the Internet.

{p 5 9 2}
{* fix}
5.  {help graph_save:graph save} could, on rare occasions, produce
    severely misdrawn graphs when preceded by "{cmd:graph7} ...
    {cmd:, saving()}".  This is fixed.

{p 5 9 2}
{* fix}
6.  {help saving_option:graph ... , saving(... , asis)} could, on rare
    occasions, cause Stata to crash.
    This occurred only when saving
    {cmd:asis}-format graphs; see help {help gph_files}.
    This is fixed.

{p 5 9 2}
{* fix}
7.  Help file aliases contained in the official {cmd:help_alias.maint} file
    are now resolved before attempting to locate the .hlp file along the ado
    path.  This ensures that the official Stata .hlp files are found before
    user-written .hlp files.

{p 5 9 2}
{* fix}
8.  {help regress:regress, beta} after {help anova} produced nonsense results
    for the normalized beta coefficients.  {cmd:regress, beta} is no longer
    allowed after {cmd:anova}.

{p 5 9 2}
{* fix}
9.  After {help dp:set dp comma},
    in-line = macro-expansion operators did not work in most contexts
    because the results it produced would have commas for decimal points and
    Stata would not understand that as input.
    In-line = operators now ignore the {cmd:dp} setting and all is fixed.

{p 4 9 2}
{* enhancement}
10.  Graphs exported to {help graph_export:PS or EPS} format now use round
     line caps on connected lines.

{p 4 9 2}
{* enhancement}
11.  (Unix) Connected lines drawn to the Graph window now use round line caps.
     The Windows and Macintosh versions already use round line caps.

{p 4 9 2}
{* enhancement}
12.  (Macintosh) Unconnected lines such as grid lines and axes now use butt
     line caps rather than round line caps.

{p 4 9 2}
{* enhancement}
13.  (Windows) Keyboard shortcuts to the menu items Do and Run in the
     {help edit:Do-file Editor} have been added.
     The shortcuts are ctrl-d and ctrl-r.

{p 4 9 2}
{* enhancement}
14.  (Macintosh) A keyboard shortcut to the menu item Run for the
     {help edit:Do-file Editor} has been added.

{p 4 9 2}
{* fix}
15.  (Macintosh) {help edit:Do-file editor} preferences were corrupted when
     the preference dialog was opened; this is fixed.

{p 4 9 2}
{* enhancement}
16.  (Macintosh) The preferences dialogs have been rewritten as one single
     dialog that can be accessed from Stata's menus or from the application
     menu.

{p 4 9 2}
{* fix}
17.  (Macintosh) When saving a new dataset, Stata now correctly defaults to a
     filename of Untitled.dta.

{p 4 9 2}
{* fix}
18.  (Macintosh) Stata now treats text that is dragged-and-dropped into the
     Command window the same as text that is pasted -- it truncates the text
     to the first line because the Command window only accepts one line of
     text.

{p 4 9 2}
{* enhancement}
19.  (Macintosh and Unix) The contents of the {help viewer:Review window}
     can now be copied to the Clipboard using the Review window's contextual
     menu.

{p 4 9 2}
{* fix}
20.  (Unix) The {help viewer:Review window's} contextual menu remained
     permanently disabled if the menu was ever opened while the Review window
     was empty; this is fixed.

{p 4 9 2}
{* enhancement}
21.  Stata for IRIX is now approximately 30% faster.

{p 4 9 2}
{* enhancement}
22.  Stata for 64-bit Solaris is now approximately 10% faster.


{hline 8} {hi:update 02apr2003} {hline}

    {title:Ado-files}

{p 5 9 2}
{* fix}
1.  {help bstat} produced an error message when the {cmd:stat()} or
    {cmd:accel()} options were specified with a matrix; this is fixed.

{p 5 9 2}
{* fix}
2.  {help graph_bar:graph bar} when specified with both the {cmd:over()} and
    {cmd:asyvars} options and with an {cmd:if} or {cmd:in} qualifier, could
    produce bars that did not match those in the legend; this is fixed.