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Hello, I think your problem is not coming from the chart at all. If you get an out of memory after a while this is probably because your charts are kept in memory. The lowest memory consumption would be to recreate the chart each time it is requested but this could eventually be heavy for the proce...

Hi I used jfreechart 1.0.13 for a real time charting in a web application I used a timeSerie chart I have 10 chart that i update every 20 second My problem is that after a time, i get an OutOfMemoryException Is there any way to avoid this problem or some best practice to use to consume less memory (...

hi i'm developping a web application with JSF to updates my charts, i'm calling the methode ChartUtilities.saveChartAsPNG(file1, chart, 400, 300, null); every 10seconds my application become more slow until it generates this error: javax.faces.el.EvaluationException: java.lang.OutOfMemoryError: Java...

hi
i have a multiple line chart.
the color of every line is generated automatically
i would like to set my own color to the differents line
how can i do this

hi i am using a DateAxis my problem is that when i add new value dataset.getSeries(0).addOrUpdate(new Minute(minute,new Hour()),Integer.parseInt(valAtt)); i get the date format like hh:mm:s or in my axis i have axis.setDateFormatOverride(new SimpleDateFormat("hh:mm")) and because i do the update eve...

hi,
my y axis show me value like 10.0000
how can i show in my y axis only decimal values(ex:10)

i am using timeseries but the update is not done there is my code: public TestJfreeChart() { } public String generateChartMethod(){ JFreeChart chart = ChartFactory.createTimeSeriesChart( "Test", // title "Date", // x-axis label "Nombre", // y-axis label getDataset(), // data true, // create legend? ...

could you please explain more there is my class: public class TestJfreeChart implements DatasetChangeListener { XYDataset dataset; public TestJfreeChart() { } public String generateChartMethod(){ System.out.println("Appel de generateChartMethod"); JFreeChart chart = ChartFactory.createTimeSeriesChar...

hi
i red in jfreechart Developer Guide that JFreeChart uses an event notification mechanism to update a chart
but i don't know how to implement DatasetChangeListener and DatasetChangeEvent
please help me

hi i would like to preveiw a chart with jfreechart my java code is : public String generateChartMethod(){ JFreeChart chart = ChartFactory.createTimeSeriesChart( "Test", // title "Date", // x-axis label "Nombre", // y-axis label getDataset(), // data true, // create legend? true, // generate tooltips...

hi
i succeded to show a graph using JFreeChart library
My problem is that i have dynamic data to show on the graph, every periode of time i had new data
hiow can i update my graph when receiving new data
please help me?

hi
i am using timeseries chart
i would like to use my one scale in the x-axis and y-axis(for example for the y-axis: every 2 unit)
how can i do this