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help for twoway parea
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twoway parea

    twoway parea is a modification of standard Stata twoway area command. It
    uses some undocumented features of Stata to enable pattern fills (tested
    on Windows only).

Syntax

        twoway area yvar xvar [if] [in] [, options]

        options               description
        ---------------------------------------------------------------------
        pattern(pattern_name) fill pattern; default is pattern10 (solid)
        vertical              vertical area plot; the default
        horizontal            horizontal area plot
        base(#)               value to drop to; default is 0
        nodropbase            programmer's option
        sort                  sort by xvar; recommended

INCLUDE help gr_areaopt

INCLUDE help gr_axlnk

INCLUDE help gr_twopt
        ---------------------------------------------------------------------
        Option base() is rightmost; vertical, horizontal, nodropbase, and
        sort are unique; see repeated options.


Description

    This command is a modified version of the standard twoway area command
    with the pattern fills enabled. All other options of twoway area should
    be supported as well.

Options
    pattern(pattern_name) specifies which pattern must be used for fills.
    Possible values are: pattern1, pattern2,..., pattern10, background, and
    none. Value pattern10 is the default value and corresponds to a solid
    fill. If separate areas must have different fills, combine several calls
    to parea with "||" symbol.

Examples

 . do pareademo 

 . sysuse sp500
 . twoway parea high date, pattern(pattern8) || parea low date, pattern(pattern
> 6) scale(0.5)

 . sysuse auto
 . twoway parea l w, sort pattern(pattern6)

 . twoway parea d w, sort pattern(pattern9) || parea l w if w<=3600, sort patte
> rn(pattern6) || parea l w if w>=3600, sort pattern(pattern4) ,legend(rows(1))


Author

        Sergiy Radyakin, sradyakin(at)worldbank.org

Versions

        Aug. 2007 First version for Stata 9
        Apr. 2008 Corrected for some undocumented internal changes in Stata 10 
> (which prevented the legend keys to be rendered).
        

Also see

    Manual:  [G] graph twoway area

    Online:  twoway area