CODEWITHSUNDEEP
javajfreechart
BJ Dela Cruz
BJ Dela Cruz

Reputation: 5354

Formatting Y-axis on JFreeChart

I have a StackedXYAreaChart similar to the one below:

enter image description here

On the Y-axis, instead of the tick units shown (2.5, 5.0, 7.5, 10.0, etc.), I have the following: 100,000, 200,000, 300,000, 400,000, etc. These represent Bytes, just like the one above. My question is: is there a way I could format these tick units such that they represent Kilobytes, i.e. 100, 200, 300, 400, etc. or even Megabytes, i.e. 0.1, 0.2, 0.3, 0.4, etc.? I don't want to display 10 MB as 10,000,000 on the Y-axis.

Thanks!

Upvotes: 2

Views: 3983

Answers (2)

CruzianEngineer
CruzianEngineer

Reputation: 11

I would of done a byte conversion, converting from 

KB to MB=(KB/1024)
KB to TB=(KB/(1024*2))
KB to GB=(KB/(1024*3))
KB to PB=(KB/(1024*4))

Where the the NumberAxis should auto range depending on the value passed.

Upvotes: 1

trashgod
trashgod

Reputation: 205785

The static factory createStackedAreaChart() instatiates a NumberAxis for the range. The NumberAxis method createStandardTickUnits() creates the standard tick units, which may serve as an example for creating your own units. In particular, "If you don't like these defaults, create your own instance of TickUnits and then pass it to the setStandardTickUnits() method." There's more details here.

Upvotes: 4

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