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Display Bar Values in Chart

Steve Dyke
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Joined: Nov 16, 2004
Posts: 1490
    
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Can someone help me with the following code syntax? I need to display the x values on top of the bars in my chart.

Ulf Dittmer
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Joined: Mar 22, 2005
Posts: 42926
    
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My guess would be that this calls for a subclass of ClusteredXYBarRenderer that does some extra drawing (of the numeric value) on top of the bar. You'd override the drawItem method for that.
Steve Dyke
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Joined: Nov 16, 2004
Posts: 1490
    
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Ulf Dittmer wrote:My guess would be that this calls for a subclass of ClusteredXYBarRenderer that does some extra drawing (of the numeric value) on top of the bar. You'd override the drawItem method for that.


Can you explain a little more in detail?
Ulf Dittmer
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Joined: Mar 22, 2005
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Something like this:
Steve Dyke
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Joined: Nov 16, 2004
Posts: 1490
    
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Maybe I am missing somthing and I am surely not questioning your advice and expertise. Is all this necessary just to do what I thought would be a simple, turn on or display x value labels.
Ulf Dittmer
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Joined: Mar 22, 2005
Posts: 42926
    
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Maybe I'm misunderstanding what you're trying to do. I interpreted "I need to display the x values on top of the bars in my chart. " to mean that you want the values to be drawn inside of the rectangle defined by each bar. Since FreeChart has no provisions for doing that, you'd have to go the route I outlined.

If you actually meant something else, please elaborate.

Out of the box, JFreeChart can only display values as part of an Axis, which can be left or right of a chart (for value axes) or above or below a chart (for domain axes); see the AxisLocation class for details.
Steve Dyke
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Joined: Nov 16, 2004
Posts: 1490
    
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Right now my chart displays horizontal bars, seven sets of five bars. It is showing a weeks worth of department activity. What the Management wants to see in addition to what I have is the values of the bars also displayed above each bar.
Ulf Dittmer
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Joined: Mar 22, 2005
Posts: 42926
    
  68
You could check out what the AbstractRenderer.setBaseItemLabelsVisible
and setBasePositiveItemLabelPosition methods can do.
Steve Dyke
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Joined: Nov 16, 2004
Posts: 1490
    
    1
Ulf Dittmer wrote:You could check out what the AbstractRenderer.setBaseItemLabelsVisible
and setBasePositiveItemLabelPosition methods can do.


Is there any way you could provide an example of this?
Ulf Dittmer
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Joined: Mar 22, 2005
Posts: 42926
    
  68
It would be something like this:
Steve Dyke
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Joined: Nov 16, 2004
Posts: 1490
    
    1
Thanks a lot for the example, I got it to work.
 
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subject: Display Bar Values in Chart