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Combined plot for hardware monitoring

I am monitoring CPU, RAM and disk IO for a computational pipeline that consists of multiple steps to process the input data. I would like to visualize the hardware consumption for the entire pipeline but also per step of the pipeline.
In order to render hardware consumptions, I'd like to draw a combined plot with jFreeChart with four vertically aligned subplots that all have the same x-axis - time. The top plot is supposed to be a gantt plot to indicate the step of the pipeline. In the second plot I'd like to render the CPU consumption over time. In the third plot the RAM consumption, the bottom plot is for disk IO. The aim is to visually slide horizontally over the plot and see, which step of the pipeline uses how much CPU, RAM and disk.
I'm all set up in eclipse, jFreeChart library installed and all my data is imported and ready to render. All I need is some guidance for how to set up the combined chart up, cause my code blows up, when I try to combine the Gantt plot (which is a category plot) and the CPU plot (which is XY plot):
public JFreeChart createChart() {
final JFreeChart ganttChart = ChartFactory.createGanttChart(
"Gantt of Tasks", // chart title
"Task", // domain axis label
"Time", // range axis label
createGanttDataset(), // data
true, // include legend
true, // tooltips
false // urls
);
JFreeChart cpuChart = ChartFactory.createTimeSeriesChart(
"CPU load", // title
"Time", // x-axis label
"CPU Load", // y-axis label
createCpuDataset(), // data
true, // create legend?
true, // generate tooltips?
false // generate URLs?
);
// parent plot...
final CombinedRangeCategoryPlot plot = new CombinedRangeCategoryPlot();
plot.setGap(10.0);
// add the subplots...
plot.add(ganttChart.getCategoryPlot(), 1);
plot.add(cpuChart.getCategoryPlot(), 1);
plot.setOrientation(PlotOrientation.VERTICAL);
// return a new chart containing the overlaid plot...
return new JFreeChart("Combined GANTT/CPU plot",
JFreeChart.DEFAULT_TITLE_FONT, plot, true);
}
private IntervalCategoryDataset createGanttDataset() {
final TaskSeries taskSeries = new TaskSeries("Tasks");
for (Map.Entry<DoubleLong, String> entry : algoStartEndDates.entrySet()) {
final String taskTitle = entry.getValue();
final long startDate = entry.getKey().n1;
final long endDate = entry.getKey().n2;
taskSeries.add(new Task(taskTitle, new SimpleTimePeriod(startDate, endDate)));
}
final TaskSeriesCollection collection = new TaskSeriesCollection();
collection.add(taskSeries);
return collection;
}
private XYDataset createCpuDataset() {
final TimeSeries timeSeries = new TimeSeries("CPU load");
for (CollectlData data : collectlData) {
final RegularTimePeriod t = new Millisecond(new Date(data.getUtcTime()));
timeSeries.add(t, data.getCpuData().getTotal());
}
final TimeSeriesCollection dataset = new TimeSeriesCollection();
dataset.addSeries(timeSeries);
dataset.setDomainIsPointsInTime(true);
return dataset;
}
I would expect this to create a combined plot, but I'm receiving the error message:
Caused by: java.lang.ClassCastException: class org.jfree.chart.plot.XYPlot cannot be cast to class org.jfree.chart.plot.CategoryPlot (org.jfree.chart.plot.XYPlot and org.jfree.chart.plot.CategoryPlot are in unnamed module of loader 'app')
at org.jfree.chart.JFreeChart.getCategoryPlot(JFreeChart.java:824) ~[jfreechart-1.0.15.jar:1.0.15]

Add Regression Line using Java and mysql [duplicate]

This question already has answers here:
Plotting multiple regression lines through different Y-Intercepts and X-values
(1 answer)
How can I get a values from the line chart in java?
(1 answer)
Closed 4 years ago.
I'm a beginner in Java. I would like to ask if is it possible to add a regression line in line chart using java and mysql? anyway this is my code:
try {
String sql = "select YEAR(admission.admissiondate) as YEAR, count(admissionID) as StudNum from admission group by YEAR(admissiondate)";
JDBCXYDataset dataset = new JDBCXYDataset(
"jdbc:mysql://localhost/zoom", "com.mysql.jdbc.Driver", "root", "");
dataset.executeQuery(sql);
final JFreeChart chart = ChartFactory.createXYLineChart ("Number of Students Per Year","YEAR", "Number of Students",
dataset,PlotOrientation.VERTICAL,true,true,false);
XYPlot plot =null;
ChartFrame frame = new ChartFrame("cchart", chart);
frame.setVisible(true);
frame.setSize(500, 500);
chart.setBackgroundPaint(Color.white);
XYPlot xyPlot = chart.getXYPlot();
NumberAxis domainAxis = (NumberAxis) xyPlot.getDomainAxis();
domainAxis.setTickUnit(new NumberTickUnit(1.0));
domainAxis.setRange(2016,2030);
} catch(Exception e) {
e.printStackTrace();
}

You can find a Regression Class in the
JFree API which basically does what it sounds like.
A more detailed Example is shown here under
'Adding a Regression line to the Graph':
private void drawRegressionLine() {
// Get the parameters 'a' and 'b' for an equation y = a + b * x,
// fitted to the inputData using ordinary least squares regression.
// a - regressionParameters[0], b - regressionParameters[1]
double regressionParameters[] = Regression.getOLSRegression(inputData,
0);
// Prepare a line function using the found parameters
LineFunction2D linefunction2d = new LineFunction2D(
regressionParameters[0], regressionParameters[1]);
// Creates a dataset by taking sample values from the line function
XYDataset dataset = DatasetUtilities.sampleFunction2D(linefunction2d,
0D, 300, 100, "Fitted Regression Line");
// Draw the line dataset
XYPlot xyplot = chart.getXYPlot();
xyplot.setDataset(1, dataset);
XYLineAndShapeRenderer xylineandshaperenderer = new XYLineAndShapeRenderer(
true, false);
xylineandshaperenderer.setSeriesPaint(0, Color.YELLOW);
xyplot.setRenderer(1, xylineandshaperenderer);
}

JFreeChart not updating

Some background info: I'm creating a system to register lost, found and returned luggage. The amount of those 3 variable need to be in a LineChart to get a nice overview from how much luggage is lost etc. over an amount of time.
Now the problem:
When I create a LineChart and add it to a ChartPanel the LineChart represent a dataset. I've heard that when you edit/update your dataset, the chart is also automatically updated. Well I have an update button next to the chart which has to update the chart when clicked. Independent of the chart in an already existing JPanel/ChartPanel I also create a new frame which represent a ChartFrame.
When I click the update button a new frame pops-up and with the most recent data from the updated dataset. When I click it again, obviously another frame is created, but the already existing frame is also update while the chart in the JPanel isn't though they use the same dataset which is static and comes from a LineChart model.
Well here some code:
LineChartModel
//At the top of the document the dataset is initialize static
public static DefaultCategoryDataset dataset = null;
/*****************Other code omitted***********************/
/**
*
* Updates an already existing dataset
*
* #param dataset
* #return dataset
*/
public CategoryDataset updateDataset(DefaultCategoryDataset dataset) {
this.dataset = dataset;
// row keys...
final String rowLost = "Lost";
final String rowFound = "Found";
final String rowReturned = "Returned";
//Don't pay attention to this. It's setting the value for the dataset from different arrays which I know of the are filled correctly
int i = 0;
while (i < 12) {
dataset.setValue(lost[i], rowLost, type[i]);
System.out.println("There were " + lost[i]
+ " lost luggages in month: " + type[i]);
i++;
}
for (int j = 0; j < 12; j++) {
dataset.setValue(found[j], rowFound, type[j]);
System.out.println("There were " + found[j]
+ " found luggages in month: " + type[j]);
}
for (int j = 0; j < 12; j++) {
dataset.setValue(returned[j], rowReturned, type[j]);
System.out.println("There were " + returned[j]
+ " returned luggages in month: " + type[j]);
}
return dataset;
}
The LineChart Class with his constructor
LineChartModel model = new LineChartModel();
public ChartPanel chartPanel;
/**
* Creates a new demo.
*
* #param title the frame title.
*/
public LineChart(final String title, LineChartModel m) {
m = model;
m.selectRange();
m.createDataset();
final JFreeChart chart = createChart(m.dataset);
chartPanel = new ChartPanel(chart);
chartPanel.setPreferredSize(new Dimension(500, 270));
}
ChartController
First the params of the constructor
public ChartController(final ManCharts v, final LineChartModel m) {
view = v;
model = m;
And here the actionlistener of the button.
//Select a range by sumbitting the variables
v.date.btnSubmit.addActionListener(new ActionListener() {
#Override
public void actionPerformed(ActionEvent arg0) {
//selectRange select all the data between 2 dates but isn't important for this problem
m.selectRange(/*v.date.dateChooserFrom, v.date.dateChooserTo*/);
//updateDataset updates the dataset from the LineChartModel which is static
m.updateDataset(m.dataset);
//The data in the chart should already be updated but here I'm trying to replace the current chart by a new one
v.chart.chartPanel = new ChartPanel(v.chart.createChart(m.dataset));
//This is the new chart which does automatically update when the button is pressed
JFreeChart chart = ChartFactory.createLineChart("Something chart", "Date", "Value", m.dataset);
ChartFrame frame = new ChartFrame("New line chart", chart);
frame.setVisible(true);
}
});
I really hope someone can help and that this problem is not too complicated without having the full code.
If you need more code or something. Just say so.
Thanks in advance!
EDIT!
I think it has to do something with how I create the chart. The chart in my JPanel which is created at the start of my application is created with an edited method (this is part of my LineChart class and stands below my constructor):
/**
* Creates a sample chart.
*
* #param dataset a dataset.
*
* #return The chart.
*/
public JFreeChart createChart(final CategoryDataset dataset) {
// create the chart...
final JFreeChart chart = ChartFactory.createLineChart(
"Luggage", // chart title
"Time", // domain axis label
"Value", // range axis label
dataset, // data
PlotOrientation.VERTICAL, // orientation
true, // include legend
true, // tooltips
false // urls
);
chart.setBackgroundPaint(Color.decode("#d6d9df"));
final CategoryPlot plot = (CategoryPlot) chart.getPlot();
plot.setBackgroundPaint(Color.lightGray);
plot.setRangeGridlinePaint(Color.white);
// customise the range axis...
final NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
rangeAxis.setAutoRangeIncludesZero(true);
// customise the renderer...
final LineAndShapeRenderer renderer = (LineAndShapeRenderer) plot.getRenderer();
//renderer.setDrawShapes(true);
renderer.setSeriesStroke(
0, new BasicStroke(
2.0f, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND,
1.0f, new float[] {10.0f, 6.0f}, 0.0f
)
);
renderer.setSeriesStroke(
1, new BasicStroke(
2.0f, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND,
1.0f, new float[] {6.0f, 6.0f}, 0.0f
)
);
renderer.setSeriesStroke(
2, new BasicStroke(
2.0f, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND,
1.0f, new float[] {2.0f, 6.0f}, 0.0f
)
);
// OPTIONAL CUSTOMISATION COMPLETED.
return chart;
}
SOLVED
It had to do with another dataset that was created when clicking the submit button. So I've fixed the recreation and it's working now. Not really a chart problem, but just a problem in my model. Thanks for the help anyway!

ChartPanel implements an event listener that prompts it to repaint() itself when needed; JPanel does not. See the implementation of ChartChangeListener in chartChanged(), for example. When debugging, look for one instance of ChartPanel that shadows another or an errant use of JPanel.
Addednum Does the frame also need to be an ApplicationFrame or could it work in a JFrame?
Either is acceptable, as shown in this JFrame example or this ApplicationFrame example; both update dynamically. Note that Swing GUI objects should be constructed and manipulated only on the event dispatch thread.

JFreeChart Pie graph labels squishing

As you can see from the picture, the labels for the arrows pointing to the sections of the pie graph are overlapping on the left side. Is there a way to shrink the font of the labels so more can fit? Or make them go out so they dont overlap?strong text

you can rotate chart by some angle by using following code
JFreeChart chart = ChartFactory.createPieChart3D("World Polulation by Countries ", dataset, true, true, true);
PiePlot plot = (PiePlot) chart.getPlot();
plot.setPieIndex(0);
// plot.setLabelFont(new Font("SansSerif", Font.NORMAL, 12));
plot.setNoDataMessage("No data available");
plot.setCircular(false);
plot.setLabelLinksVisible(true);
// plot.zoom(200);
// plot.setStartAngle(180);
// plot.setLabelBackgroundPaint(paint);
plot.setLabelLinkMargin(0.01);
return chart;

Display X Values on the XYLineChart

I want to display the X values on to the XY line chart As shown below:
How can i do this?
I want to display it like this:
Here's my code to display the line Graph:
public class LineChartDemo6{
public static void main(String arg[]){
XYSeries series = new XYSeries("Average Weight");
series.add(20.0, 20.0);
series.add(40.0, 20.0);
series.add(55.0, 20.0);
series.add(70.0, 20.0);
XYDataset xyDataset = new XYSeriesCollection(series);
JFreeChart chart = ChartFactory.createXYLineChart
("XYLine Chart using JFreeChart", "Age", "Weight",
xyDataset, PlotOrientation.VERTICAL, true, true, false);
ChartFrame frame1=new ChartFrame("XYLine Chart",chart);
frame1.setVisible(true);
frame1.setSize(300,300);
}
}

You can add an XYItemLabelGenerator to your plot's renderer, as shown in this example and this example. It looks like ArgumentIndex {1} is the domain value.
Addendum: Your example works fine; it just needs a little extra margin.
ValueAxis range = plot.getRangeAxis();
range.setUpperMargin(0.20);