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SetYTimeFormat — Set date/time formatting string for Y labels
$plot->SetYTimeFormat($ytf)
SetYTimeFormat sets the formatting string for Y tick
and data labels when 'time' formatting mode for Y labels is in effect.
(Y data labels are only available with bar charts and stacked bar charts.)
Use SetYLabelType to select the formatting mode for labels.
The formatting string is used with the PHP strftime
to format labels as date/time strings.
This function is retained for compatibility, but use of SetYLabelType is preferred.
$ytf
Formatting string for Y labels, used with strftime().
For example, if the label value is 1104534000 (which is the
time_t representation of 6:00 PM on the last day of 2004),
'%Y-%m-%d.%H:%M:%S' results in '2004-12-31.18:00:00',
and '%d %b %Y' results in '31 Dec 2004'.
This applies to Y tick labels, and also to Y data labels unless overridden by SetYDataLabelType.
To use date/time formatting, the label values must be Unix time_t values (number of seconds since Unix epoch).
Unlike SetPrecisionY, SetYTimeFormat does not
automatically enable the correct label formatting mode. You
must call SetYLabelType('time') to use date/time
formatting of labels.
The default time format is '%H:%M:%S', showing hours, minutes, and seconds (and ignoring any date information).
Starting with PHPlot-5.0.6, the time format can be set with SetYLabelType instead.
The default time format was undefined prior to PHPlot-5.0rc3.
This version of the manual was produced for the
PHPlot Sourceforge project web service site, which requires the logo on each
page.
To download a logo-free copy of the manual, see the
PHPlot project downloads
area.