I have bar chart with hudge of candles and performance is very slow.I plan to add some code to XYPlot to skip the values that are not in view for the chart, but this hasn't been done yet
Search found 9 matches
- Thu Jan 17, 2013 4:52 pm
- Forum: JFreeChart
- Topic: lousy performance for huge dataset, relying on Jfreechart
- Replies: 10
- Views: 21372
Re: lousy performance for huge dataset, relying on Jfreechar
Hello, what about this plan?
- Thu Jun 11, 2009 12:18 pm
- Forum: JFreeChart
- Topic: Need setLabelOffset on XYTextAnnotation
- Replies: 0
- Views: 2390
Need setLabelOffset on XYTextAnnotation
Hello, how can I shift annotation in pixels, not in chart units?
Becouse when zooming, spaces are bigger. I added xOffset and yOffset to XYTextAnnotation class.
Do you plane implement this?
Thank you
Becouse when zooming, spaces are bigger. I added xOffset and yOffset to XYTextAnnotation class.
Do you plane implement this?
Thank you
- Wed Jun 10, 2009 3:20 pm
- Forum: JFreeChart
- Topic: ConcurrentModificationException explained solution
- Replies: 1
- Views: 2445
Re: ConcurrentModificationException explained solution
Or can I wait for Swing painting finish and in addition suspend/lock Swing engine during realize chart changes?
- Wed Jun 10, 2009 1:39 pm
- Forum: JFreeChart
- Topic: ConcurrentModificationException explained solution
- Replies: 1
- Views: 2445
ConcurrentModificationException explained solution
Hello guys, I found here JFreeChart is not thread safe and I can't modify chart without care for it. But I don't know how to handle it. I have random thread which can modify my chart anytime. I think, I can add "synchronized" field before any chart modification, but I need add it before chart paint ...
- Wed Jun 10, 2009 12:37 pm
- Forum: JFreeChart - Stockmarket
- Topic: Dynamic OHLC chart - inserting new bars
- Replies: 3
- Views: 10590
Re: Dynamic OHLC chart - inserting new bars
I tested OHLCSeriesCollection, it is functional, but loading performace is bad.
You can implement List<DefaultOHLCDataItem> to ie. DefaultListOHLCDataset?
I can send you source code. It is little change and somebody can use it...
You can implement List<DefaultOHLCDataItem> to ie. DefaultListOHLCDataset?
I can send you source code. It is little change and somebody can use it...
- Wed Jun 10, 2009 12:31 pm
- Forum: JFreeChart - Stockmarket
- Topic: Candlestick Timeline problem
- Replies: 10
- Views: 78694
Re: Candlestick Timeline problem
Hello, I have this problem too.
Do you plane increase exceptions performance?
Is it possible add any to source code some "question" to my gap? Will be performace better with this solution?
Thank you.
Do you plane increase exceptions performance?
Is it possible add any to source code some "question" to my gap? Will be performace better with this solution?
Thank you.
- Wed Jun 10, 2009 12:28 pm
- Forum: JFreeChart - Stockmarket
- Topic: Dynamic OHLC chart - inserting new bars
- Replies: 3
- Views: 10590
Re: Dynamic OHLC chart - inserting new bars
I use custom DefaultOHLCDataset with added List field.
I will test OHLCSeriesCollection, thank you for help.
I will test OHLCSeriesCollection, thank you for help.
- Wed Jun 10, 2009 12:15 pm
- Forum: JFreeChart
- Topic: long line decrease performance
- Replies: 1
- Views: 2361
long line decrease performance
I have minute chart from 2004 till 2009.
When I add XYLineAnnotation from 2004 to 2009, chart performance is very slow.
And with bigger zoom performace is worse.
Do you plane any optimalization? Where in source code I can found line part calculation?
Thank you, Jiri
When I add XYLineAnnotation from 2004 to 2009, chart performance is very slow.
And with bigger zoom performace is worse.
Do you plane any optimalization? Where in source code I can found line part calculation?
Thank you, Jiri
- Sun Apr 05, 2009 9:45 am
- Forum: JFreeChart - Stockmarket
- Topic: Dynamic OHLC chart - inserting new bars
- Replies: 3
- Views: 10590
Dynamic OHLC chart - inserting new bars
Hello, I can't find how to dynamically add bars to existing OHCL chart?