Graph refresh rate

[jasonmcdermott]

I really like this lib, it produces very lovely graphs with very little effort.

I'm trying to use it to create live graphs, which update in real-time (every second) and I'm seeing big spikes in memory and GPU usage. Could you give me any suggestions on how I could streamline the library to speed up this performance? I've dropped alpha to zero and turned off beziers - scratching the surface to be sure - are there any other low hanging fruit that I could tackle?
thanks again
Jason

[Boris-Em]

Hi @jasonmcdermott,
Thanks for the words of encouragement.
I'm currently working on an update which should greatly increase the performances of the graph. Hopefully it's going to help out for your particular case.
It still requires quite a bit of work though, so don't expect anything in the next coming days.

[jasonmcdermott]

Hi @Boris-Em, that's really great to hear. I've been able to get the graph to refresh each second by turning off the animation option & trimming the NSMutableArray to a small number of data points (20-30). To do this, I have to drop the items at index 0 before appending the new data. It's a bit of a hack, I'm really looking forward to seeing the new update.

It's the best looking graphing system on iOS, I'm very keen to use it in my app. Will patiently wait for your update. cheers, J

[Boris-Em]

Hi @jasonmcdermott,
I just pushed a new commit on the feature branch that should improve the performances of the graph.
It's now drawn in a different, more efficient way.
Please note that a few features like lineColorForIndex are probably broken now.
I would love to have your feedback on this commit. Thanks for all the help!

[jasonmcdermott]

The performance improvements are worth the cost of lineColorForIndex. FWIW, I'm not certain I would use this feature much, or at all. The new feature commits look really good, @Boris-Em. I've run a few short comparisons, all looking very promising. I'll send you a screen capture of what I'm working on.

Thanks & keep up the great work!