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Plotting dates against numbers

 
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Hello. I am using JFreeChart to plot some data I receive via serial port. Data I receive is the measure of temperature taken twice a day. Perhaps the client is going to receive data recorded during one month. I have plotted succesfully this data, but my question is this: is it possible to make JFreeChart to map the date (with hour and minute) with its corresponding measured temperature? Automatically it shows some dates in X axis, but does not correspond to the days I have measured temperature. I dont know if I am being clear. In short: show dates and temperatures in X and Y axis...

Thank you very, very much
 
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