问题
I have requirement for the barchart which I have created using JFreeChart libraries.
I am illustrating this using an example. Lets say: I have plotted "John", "Mark", "Louis" and "Keith" on the X-axis (Students) and their respective marks on the Y-axis. I am using three different bars for each of the students to show their respective English, Science, and Maths marks.
Lets say, Science weigh the most, hence a student getting highest in Science would get a "Gold-Medal". Highest in "Maths" would fetch a student a "Silver", and highest in English would fetch him a "Bronze"
I want to put a small image (gold, silve or bronze) beside the label of the student who has got the highest marks in each of the subjects. A particular student (obviously) can get all the medals. Can this (or a thing similar to this) be done.
I am using JFreeChart's ChartFactory.createBarChart(...) api for this. I am able to plot the graph correctly but stuck with the above requirement.
Thank you!
回答1:
You might look at one of the org.jfree.chart.annotations such as XYDataImageAnnotation, XYDrawableAnnotation or XYImageAnnotation.
回答2:
It has been a long time this question was asked,
This is what I have done to achieve it.
Drawn a image at : (x,y) at each Category Entity.
Size of image : (width ,height) of CategoryLabel entity.
You can place you image accordingly around the category label.
Preview
Hope it helps.
Cheers :)
来源：https://stackoverflow.com/questions/12315061/add-an-image-next-to-a-x-axis-label-on-a-jfreecharts-barchart