disable negatives values on lineChart with zoom

[Alex4924]

Hello everybody,

For beginning I specify to you that I am French so sorry for my English.

I've a problem with a LineChart graph who is create dynamically. This graph contain mouse wheel Zoom.
The x-axis contains date values, and the y-axis contains numeric values.

And I want to disable negatives values on the y-axis when I zoom. I don't want that when I zoom out, my graph drops below zero at the y-axis

I hope I was clear.

Thank you.

[maryan]

Hey, did you fix this?

[Alex4924]

Hello,

No I didn't fix this problem and I didn't have any answer!

[maryan]

As I wrote in another post, you can try to override zoomOutBoth method from ChartPanel. That's work for me.

[mkivinie]

If you are going to show only positive Y-values why not use the NumberAxis method

Code: Select all

setRangeType(RangeType.POSITIVE)

for your Y-axis? This way the zoom out will not slip into negative range.

[mkrauskopf]

setRangeType solution does not seem to work once the user starts zooming out - plot will display area below zero.

I've posted another tip into: viewtopic.php?f=3&t=109509#p167219