I am plotting an FFT with about 480,000. points. I am using a line series.
If I plot the magnitude of the fft it plots very quickly with no problems.
if instead, before I define the lineSeries I for loop through the data series and change each data point to dB using 20*Math.log10(y/refVal). The plot freezes the UI and never updates and never plots. same number of points just different Y values.
The only thing I can think of to explain this is perhaps the dB version of the data is more chaotic meaning it jumps around a lot more. where the linear data is much more predictable.
I'm not sure what the line generation algorithm is but I could imagine something like this bogging down some sort of interpolator or curve fitting. but It was my understanding that lineSeries did not do any of this.
any thoughts?! thank you
Comments: sorry it appears I have messed up the code... hope it is still readable
If I plot the magnitude of the fft it plots very quickly with no problems.
if instead, before I define the lineSeries I for loop through the data series and change each data point to dB using 20*Math.log10(y/refVal). The plot freezes the UI and never updates and never plots. same number of points just different Y values.
The only thing I can think of to explain this is perhaps the dB version of the data is more chaotic meaning it jumps around a lot more. where the linear data is much more predictable.
I'm not sure what the line generation algorithm is but I could imagine something like this bogging down some sort of interpolator or curve fitting. but It was my understanding that lineSeries did not do any of this.
any thoughts?! thank you
Comments: sorry it appears I have messed up the code... hope it is still readable