Could you elaborate roughly on how you did it?
On Tuesday, February 5, 2019 at 4:49:17 AM UTC+8, Szilard Perenyi wrote: > > figured out for some reason if you call candlestickitem once with all the > data it makes the plot lag alot, but if you call it multiple times and only > plot 500 at once it doesnt lag the plot. > > On Monday, February 4, 2019 at 1:03:28 AM UTC, Patrick wrote: >> >> Hi, >> >> Why is it slow? I would expect it to be able to handle thousand(s?) of >> data points before becoming too laggy. If you have many thousands of data >> points and are trying to "zoom out" so they are all trying to be displayed >> at once, then you may need to cull/resample your data. Eg, if your x-axis >> is time, you should plot yearly/monthly/hourly min/mean/max values as >> appropriate, depending on zoom level, so the plot doesn't become too >> cluttered. >> >> Patrick >> >> >> On Monday, 4 February 2019 07:24:23 UTC+10:30, Szilard Perenyi wrote: >>> >>> is there anyway to increase perfomance for large candlestick charts? >>> >> -- You received this message because you are subscribed to the Google Groups "pyqtgraph" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/pyqtgraph/752634de-0c83-49f9-9bcd-8268e1877e74%40googlegroups.com.
