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| Re: Dynamically changing the date format on the X axis [message #851173 is a reply to message #851151] |
Fri, 20 April 2012 18:12  |
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Mike
Are you doing something like:
function beforeDrawAxisLabel( axis, label, context )
{
importPackage(Packages.org.eclipse.birt.chart.model.attribute);
importPackage(Packages.java.text);
//LINEAR_LITERAL
//LOGARITHMIC_LITERAL
//TEXT_LITERAL
//DATE_TIME_LITERAL
if (axis.getType() == AxisType.DATE_TIME_LITERAL)
{
value = label.getCaption().getValue();
importPackage( Packages.java.util );
var lc = new Locale("en", "US");
var dtf2 = new SimpleDateFormat("MMM/dd/yyyy", lc);
//var dtf2 = new SimpleDateFormat("MM/dd",
context.getExternalContext().getScriptable().getLocale());
var dt = new Date(value);
var fn1 = dtf2.format(dt);
label.getCaption().setValue(fn1);
}
}
Jason
On 4/20/2012 1:51 PM, Mike Wulkan wrote:
> Currently in my reports I have logic that checks whether the range of
> datetimes on the X axis spans a calendar day. If it does it sets the
> format specifier to show both the date and time, otherwise it sets the
> format specifier to just show the time. It does this in the
> beforeGeneration script for the chart using:
> xAxis.setFormatSpecifier(
> JavaDateFormatSpecifierImpl.create(dateTimeFormat) );
>
> What I would like to do is change this so that only the first label for
> a unique day gets the long format and the rest of the labels use the
> short time only format. This would reduce the clutter and highlight the
> point where the day changed.
>
> I tried to change the format using the above API in the
> beforeDrawAxisLabel script but no matter what I set it to it doesn't
> appear to take effect. I'm thinking that I may have to define the X axis
> label as a string and format it myself in the beforeDrawAxisLabel.
> I am hoping there is a better way
>
> Thanks,
> Mike
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