Hello.
I use JasperReport to create a report with a timeSeriesChart. I used a JRChartCustomizer to customize that chart because I needed to display the different values into the chart himself and managed to do that by overriding the customize method in that way:
public void customize(JFreeChart chart, JRChart jasperChart)
{
XYPlot xyplot = chart.getXYPlot();
XYItemRenderer renderer = (XYItemRenderer) xyplot.getRenderer();
renderer.setBaseItemLabelsVisible(true);
renderer.setBaseItemLabelGenerator(new StandardXYItemLabelGenerator());
}
The problem is that higher labels are truncated when I generate the report like shown in the image below. It is also the case for the last label of the domain axis.
Does anyone have an idea to solve that problem?
Thank you.
15 Answers:
A possibility would be to increase the range axis upper margin with a certain amount.
Hope this helps,
sanda
| Code: |
public void customize(JFreeChart chart, JRChart jasperChart)
{
XYPlot xyplot = chart.getXYPlot();
XYItemRenderer renderer = (XYItemRenderer) xyplot.getRenderer();
renderer.setBaseItemLabelsVisible(true);
renderer.setBaseItemLabelGenerator(new StandardXYItemLabelGenerator());
xyplot.getRangeAxis().setUpperMargin(xyplot.getRangeAxis().getUpperMargin() + 0.05);
}</td></tr></tbody></table> |
Thank your for the idea, it works !
I had also tried with this workaround:
"rangeAxis.setUpperBound(rangeAxis.getUpperBound() * 1.05);"
but I think it is a crappy solution, yours is really better.
I also used it for the domain axis and finally, the solution to the problem is the 2 lines above.
Have a nice day.
| Code: |
xyplot.getRangeAxis().setUpperMargin(xyplot.getRangeAxis().getUpperMargin() + 0.05); xyplot.getDomainAxis().setUpperMargin(xyplot.getDomainAxis().getUpperMargin() + 0.05);</td></tr></tbody></table> |
Hi
It is a "timeSeriesChart" in the JRXML and I think that it is a XYLine JFreeChart. I customize the x labels in the JRChartCustomizer with the following code
| Code: |
XYPlot xyplot = chart.getXYPlot();
DateAxis axis = (DateAxis)xyplot.getDomainAxis();
axis.setDateFormatOverride(new SimpleDateFormat("dd/MM/yyyy"));</td></tr></tbody></table> |
Another possibility is to edit the jrxml file: in the <categoryAxisFormat /> set the tickLabelMask attribute in the <axisFormat/> subelement with an appropriate date format pattern.
Hope this helps,
sanda
| Code: |
<categoryAxisFormat> <axisFormat tickLabelMask="MM/dd/yyyy"> ... </axisFormat> </categoryAxisFormat> |
Post Edited by shertage at 01/31/2011 12:17
Hi, thank you, timeseries really solved my main problem.
but i got another less important problem. One information of my chart, it´s a vertical line, because, its only happened one time, but has many values.
i.e: Values, 3,5,7 at 3:00 o clock.
On my XYLine chart i could see the vertical line, and with Times Series Chart, i just have a point, and the value is the latest number read. So i got a point at X:7 and Y: 3:00 o clock. Anyone have been through this ? THXX
Post Edited by danielnb at 01/31/2011 15:38
danielnb
Wrote:
| Hi, thank you timeseries really solved my main problem. but i got another less important problem. One information of my chart, it´s a vertical line, because, its only happened one time, but has many values. i.e: Values, 3,5,7 at 3:00 o clock. On my XYLine chart i could see the vertical line, and with Times Series Chart, i just have a point, and the value is the latest number read. So i got a point at X:7 and Y: 3:00 o clock. Anyone have been through this ? THXX |
I'm not sure that I undrestand what you want but I think you should use multiple "timeSeries" in your "timeSeriesDataSet", 3 in this case: one for the 3, one for the 5 and one for the 7.
Hi.
you been very helpfull.
I think i didnt explain very well.
so i atached this image.
First chart is my original chart(Times Series), you can see at top left, 2 points (not related).
On my test chart (XY Line), i used same Y variables.
What i want is that 2 points of first chart has the same line, that second chart have. All the data and expressions are the same, except the kind of chart. And these numbers are not fixed come from Java Beans.
So i dont know how many values i got and even if i knew. I think if i make multiple series, i should get multiples points one under another, and not a plain line.
I know its confused, my bad english must contribute for that.
Well, if anyone have some idea, i apreciate a lot. Thanks =)
Hi,
This is a limitation in the JFreeChart library: a TimeSeries does not allow multiple observations for the same x-axis value. So, if you need multiple observations (ie multiple points on the same vertical line), you have to define multiple <timeSeries/> elements in your dataset, identified by different <seriesExpression/> values.
Unfortunately, an xy plot cannot be used as time series plot.
Hope this helps,
sanda
Hi again. 
I kinda solved this problem, i created a multi axis with 2 time series chart, the first, i put all series that i have no problem.
The second, i put the vertical data, duplicating the last bean and setting one more minute to his time.
I created two because they have different time period.
Well but i got another problem, my left scale is duplicated and in different proportion.
There is anyway i take it off ?
I attached an image, so you know better what im talking.
Thx
Customize the chart in a JRChartCustomizer.
HTH,
sanda
| Code: |
public void customize(JFreeChart chart, JRChart jrChart)
{
Plot mainPlot = chart.getPlot();
if (mainPlot instanceof CategoryPlot)
{
((CategoryPlot)mainPlot).getRangeAxis(1).setVisible(false);
}
else if (mainPlot instanceof XYPlot)
{
((XYPlot)mainPlot).getRangeAxis(1).setVisible(false);
}
}</td></tr></tbody></table> |
