In JFreeChart is there a notion of a composite Chart.
I need to layout several charts in a grid like arrangement.
Each chart in the grid needs to have its own separate title.
I would like to be able to save this composite chart into a png file
I would get a code snippet that explains how to do this.
As shown here, ChartPanel can be placed in any desired Swing layout.
The example cited uses GridLayout. ChartUtilities has methods for rendering a chart as a .png. I see several approaches to getting a composite image:
Use Robot#createScreenCapture() to image the layout, as shown here and here; the resulting BufferedImage can be saved using ImageIO.write().
Use JFreeChart#createBufferedImage() to render each chart and impose the individual images into a BufferedImage to create a single image, as suggested here.
Implement the Printable interface to render the image in a graphics context, as shown here.
Related
I am working on making this layout which is a layout contains a chart with custom image. I assume that this is a bar chart with custom image on it.
Every 10 values equal to one bottle image. I'm planning to use MPAndroidChart but seems that i have to make my own customRenderer. but i dont know how to do it.
this is the design of the layout Chart With Custom Image
Can anyone please show me an example?
I am trying to create chart like below:
While I've almost achieved everything by simply creating a line chart and customizing shape/paint for Renderer, I can't seem to find a way to fill the areas under the series line.
Any clues, how can I do this?
You could create your chart with a StackedXYAreaRenderer. Specify AREA_AND_SHAPES in the constructor and enable outlines. See the ChartFactory code for createStackedXYAreaChart() as an example.
StackedXYAreaRenderer r = new StackedXYAreaRenderer(XYAreaRenderer.AREA_AND_SHAPES);
r.setOutline(true);
Given a renderer, you can set the outline paint and stroke as desired.
I want to create a game where I want to have many image tiles which will respond to the arrow keys. Should I use BufferedImage to create every individual tile?
Refer to: Java Game Playing Area Difficulty
RobotChase is a tile-based game that uses BufferedImage in this way. Alternatives include these:
Implement the Icon interface, as shown in the examples cited here.
Set a component's text to a suitable Unicode glyph, as shown here.
In my application, I am showing data in a table as well as through a Dual Axis Bar/Line JFreeChart. To save some space (as the charts are being saved as PNG and put on PDF with iText PDF), I wanted to take the Graphics from the Legend, use them in the tabular view, and remove the legend.
Is there a way to grab the icons that lie with the legend item? I have found the LegendGraphic class, which seemed like would be the method to retrieve the icon from the LegendItem, but have not found anything in the documentation for LegendItem that would indicate it does.
It would be preferable if they were returned in an object that could easily be used to create a com.itextpdf.text.Image, such as byte[] or java.awt.Image.
You can get a series' LegendItem using the chart renderer's getLegendItem() method. You can change a series' Shape using the methods of ShapeUtilities, as shown in this example. See also DefaultDrawingSupplier for details of how createStandardSeriesShapes() works.
Addendum: Note that the renderer's getLegendItem() method works even if you create the chart with no legend or later use chart.removeLegend(). Once you have the LegendItem, you can use it's attributes as required.
System.out.println(renderer.getLegendItem(0, 0).getShape());
System.out.println(renderer.getLegendItem(0, 0).getFillPaint());
So I have this chart that's a little special. Kind of like an XY plot of points but my boss wanted to look like a bunch of boxes rather than dots connected by lines. And I basically made a chart using gridlayout and a whole bunch of cells that I'll be colouring in black or white depending on the data.
Now he sorta wants it to be outputted to a image file. Is there any way to save a Panel into a picture? He wants to display not only the data but also save a visual representation of the data into an image file.
Is there any way to save a Panel into
a picture?
Screen Image
You can create a Graphics context which paints to an image. This technique is often used with animations to prepare drawings offline and swap them in place to avoid artifacts.
Typically you can use the same paint methos as used to paint your canvas.
Here are more details