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Plotting a graph using Java Applet

开发者 https://www.devze.com 2023-02-15 15:49 出处:网络
I have a problem where I have to draw a graph on an applet using some data in an excel file. I would need to design an applet where I can display the graph and the data on the same applet.

I have a problem where I have to draw a graph on an applet using some data in an excel file. I would need to design an applet where I can display the graph and the data on the same applet.

I had a hard time writing some code in Java to code some CSVreader and ExcelReader files. Now,开发者_JS百科 I am really stuck in how to take this data and graph it on an applet.

I don't know which class/libraries to use for drawing the graph and how to scale it and draw the actual points or designing the applet itself. I would appreciate if someone can help me out.

EDIT

Sample input:

mis(t)  nt       Vt       N(t)      h(t)      H(t)
1      141    200,000   200,000   0.00071   0.00071
2      103    200,000   199,859   0.00052   0.00122

Here, the graph is to be plotted for mis(t) vs. h(t).


Perhaps, what you are looking for is an easy to use Chart application in Java. The answer is jFreeChart. They have a lots of samples as well to get you started immediately.

And regarding reading CSV files to pass the data to jFreeChart, use OpenCSV

Reading a CSV file is as simple as -

CSVReader rec = new CSVReader(new FileReader(filePath));
String[] recLine;
while ((recLine = rec.readNext()) != null) {
 //Get the data from recLine
}

Let me know if you need more details.

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