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How to set uneven (space) tick Units in JFreeChart XYLine

I've trying to find a solution to this problem.
I have an XYLineChart and I would like to have uneven spaces between tick units.
This is my code:
//Method (receive the dataset and return the chart)
private JFreeChart createChart(XYDataset dataset){
//--------create XYlineChart
JFreeChart oChart = ChartFactory.createXYLineChart("XYLineChart", "X", "Y", dataset);
XYPlot plot = (XYPlot) oChart.getPlot();
plot.setOrientation(PlotOrientation.VERTICAL);
plot.setRangeAxisLocation(AxisLocation.BOTTOM_OR_LEFT);
plot.setBackgroundPaint(Color.WHITE);
plot.setDomainGridlinesVisible(true);
plot.setDomainGridlinePaint(Color.black);
plot.setRangeGridlinePaint(Color.black);
// render shapes and lines
XYLineAndShapeRenderer renderer = new XYLineAndShapeRenderer(true, true);
plot.setRenderer(renderer);
renderer.setBaseShapesVisible(true);
renderer.setBaseShapesFilled(true);
NumberAxis yAxis = (NumberAxis) plot.getRangeAxis();
NumberAxis xAxis = (NumberAxis) plot.getDomainAxis();
xAxis.setNumberFormatOverride(THOUSANDS); //Override and Use a my NumberFormat
xAxis.setRange(0, 8000);
//I want to use this with my own set of tickUnits, the values(x) that are on the image I'm trying to achieve
//xAxis.setStandardTickUnits();
xAxis.setTickUnit(new NumberTickUnit(500));
yAxis.setRange(0.0, 130.0);
yAxis.setTickUnit(new NumberTickUnit(10));
yAxis.setInverted(true);
return oChart;
}
I dont know how to make my own set of TickUnits or how to space the domainAxis (xAxis) unevenly.
I'll be glad to read any examples of something like that, so i can try to use it or apply it.
I'll really appreciate your help, is the only thing missing in my project.

Too much data in DomainAxis, another way of setTickUnit

I am creating chart like this:
DefaultCategoryDataset cumulativeResultData = new DefaultCategoryDataset();
DefaultCategoryDataset indexResultData = new DefaultCategoryDataset();
then in for loop im adding data to each Dataset using cumulativeResultData.addValue
CategoryPlot plot = new CategoryPlot();
plot.setDomainAxis(new CategoryAxis("Days"));
plot.setRangeAxis(new NumberAxis("Result"));
plot.setOrientation(PlotOrientation.VERTICAL);
CategoryAxis domainAxis = plot.getDomainAxis();
domainAxis.setCategoryLabelPositions(CategoryLabelPositions.UP_45);
LineAndShapeRenderer renderer2 = new LineAndShapeRenderer(true, false);
LineAndShapeRenderer renderer = new LineAndShapeRenderer(true, false);
plot.setRenderer(renderer);
plot.setDataset(cumulativeResultData);
ValueAxis rangeAxis2 = new NumberAxis("Index price");
rangeAxis2.setRange(minRange - 1, maxRange + 1);
plot.setRangeAxis(1, rangeAxis2);
plot.setRenderer(1, renderer2);
plot.setDataset(1, indexResultData);
plot.mapDatasetToRangeAxis(1, 1);
JFreeChart chart = new JFreeChart(plot);
But what i get is not what i expected to get, please take a look in the picture bellow.
The domainAxis has to much data and it is blurred. Is any way to repair this? That only every for example 20th element shows on the domainAxis?
http://imgur.com/PkxSZl8

You should only use the CategoryPlot class when your x-axis will show categorical data. It looks like you have time series data, and for that you can use the XYPlot class with a DateAxis for the x-axis. There is also the TimeSeriesCollection class that you can probably use for your dataset.

JavaFX real-time LineChart with time axis

I'm trying to plot real-time graph, with time axis, but I have found the LineChart constructor only has the signature.
LineChart(Axis<X> xAxis, Axis<Y> yAxis)
I think embedding jfree chart in javafx is not a proper solution.
I want a few of the jfree features in a javafx LineChart, is this possible?

Download Ensemble sample from http://www.oracle.com/technetwork/java/javafx/samples/index.html
There are several examples in it for dynamic charts, e.g. "Advanced Stock Line Chart". You can take a look at their source code directly in the application.
To show time on axis you can use string and DateFormatter:
BarChart<String, Number> chart = new BarChart<>(new CategoryAxis(), new NumberAxis());
final XYChart.Series<String, Number> series1 = new XYChart.Series<>();
chart.getData().addAll(series1);
SimpleDateFormat dateFormat = new SimpleDateFormat("HH:mm:ss");
Date date = new Date();
for (int i = 0; i <= 10; i += 1) {
date.setTime(date.getTime() + i * 11111);
series1.getData().add(new XYChart.Data(dateFormat.format(date), Math.random() * 500));
}

The class org.jfree.chart.demo.TimeSeriesChartDemo1 is included with the distribution. It is pictured in the demo, and its source illustrates the use of the factory method ChartFactory.createTimeSeriesChart(). There's a related example here.

JFree chart set axis to percentage

I want my Axis in my JFree charts to become % instead of normal numbers does anyone know how I can modify my code so this happens.
It should be said that my table is already in procentage but the graph it self is not!
UPDATE
This is what ive tried so far yet still no changes:
CategoryPlot plot = (CategoryPlot) chart.getPlot();
NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
DecimalFormat pctFormat = new DecimalFormat("#.0%");
rangeAxis.setNumberFormatOverride(pctFormat);
rangeAxis.setRange(0.0, 100.0);
chart.getXYPlot().setRangeAxis(rangeAxis);
title = periode;
chartPanel.setChart(chart);
setTableModel(true,true);
UPDATE2
To set the intervals to 10 you need the following code:
NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
rangeAxis.setRange(0.0, 100.0);
rangeAxis.setTickUnit(new NumberTickUnit(10));
rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
rangeAxis.setAutoRangeIncludesZero(true);

You can use NumberAxis#setNumberFormatOverride() and provie a java.text.NumberFormat
CategoryPlot plot = (CategoryPlot) chart.getPlot();
NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
DecimalFormat pctFormat = new DecimalFormat("#.0%");
rangeAxis.setNumberFormatOverride(pctFormat);

Java JFreeChart Category Step Chart horizontal (image to explane)

i need the following type of chart:
It should be a "steped" line chart with categories on the vertical axis, like this:
I found this example of an Category Step Chart, but it the orientation is not right for my purpose.
http://www.jfree.org/jfreechart/api/javadoc/org/jfree/chart/renderer/category/CategoryStepRenderer.html
All i have done so far is this, but as you can see the red line does not fit to the orientation of the chart(should be horizontal):
The corresponding code to this:
DefaultCategoryDataset ds = new DefaultCategoryDataset();
// create dataset
for (int k = 0; k < ffCount; k++) {
StateSignal ss1 = (StateSignal) this.ffDSet.getFframes().get(k).getSignals().get(i);
ds.setValue((double) k + 1, ss1.getName(), ss1.getStates().get(0).getStatus());
}
CategoryStepRenderer categorysteprenderer = new CategoryStepRenderer(false);
categorysteprenderer.setBaseToolTipGenerator(new StandardCategoryToolTipGenerator());
CategoryAxis categoryaxis = new CategoryAxis("Category");
NumberAxis numberaxis = new NumberAxis("Value");
CategoryPlot categoryplot = new CategoryPlot(ds, categoryaxis, numberaxis, categorysteprenderer);
categoryplot.setRangePannable(true);
categoryplot.setOrientation(PlotOrientation.HORIZONTAL);
chart = new JFreeChart("test", null, categoryplot, true);
I don´t get it to work. Any ideas?
Thanks in advance!

It looks like you need to use a standard XYLineChart with a XYStepRenderer and a SymbolAxis to replace the default Range Axis rather than a CategoryStepRenderer and a horizontal plot orientation
If you associate Status A and B with a numerical value say 1 and 2 you can create a chart like this:
Using this a XYStepRenderer
XYStepRenderer renderer = new XYStepRenderer();
renderer.setBaseShapesVisible(true);
renderer.setSeriesStroke(0, new BasicStroke(2.0f));
renderer.setSeriesStroke(1, new BasicStroke(2.0f));
renderer.setBaseToolTipGenerator(new StandardXYToolTipGenerator());
renderer.setDefaultEntityRadius(6);
plot.setRenderer(renderer);
and a Symbol Axis
String[] grade = new String[3];
grade[0] = "";
grade[1] = "Status A";
grade[2] = "Status B";
SymbolAxis rangeAxis = new SymbolAxis("", grade);
rangeAxis.setTickUnit(new NumberTickUnit(1));
rangeAxis.setRange(0,3);
plot.setRangeAxis(rangeAxis);
In this example the SymbolAxis provides an alternative label for each value in the Axis