Support timecode-style DateTime tick labels

Hi Scott,

I’ve got a bit of a curly question.

I was wondering if there is a way to reformat the data on the X Axis?

I’m able to open audio files and display their waveforms, however I’d like to be able to show the X Axis in a time code, instead of samples.

I’ve looked at the format-strings for plt.Ticks(numericFormatStringX: “t”), however it’s just reformatting values in the millions and trying to get a time, which isn’t working.

With 44100 samples a second, you can imagine the numbers don’t work well at all…

Something like this maybe, I don’t know…

x value = formatstring( x value / samplerate, "d:hh:mm:ss:mmm")

Is there a way to convert these values to time properly? Or can you point me in the right direction?

I’m at this so far:

formsPlot1.Configure(lockVerticalAxis: true);                    
formsPlot1.plt.PlotSignal(dataX1);
formsPlot1.plt.AxisAuto();
formsPlot1.plt.AxisBounds(0, samples, -1, 1);
formsPlot1.plt.Ticks(numericFormatStringX: "c"); // Obviously wrong
formsPlot1.Render();

Cheers, Steve

[swharden]

I think this is fully solved now. I’ll release a NuGet package in an hour or two, and @vrdriver I look forward to hearing how it works in your hands! 👍

[swharden]

Hi @vrdriver, thanks for raising this issue! I like the idea of supporting time codes, as using ScottPlot to work with audio is an excellent use for this graphing library. Your screenshot mock-up really helps me better understand the goal here, thanks for posting it!

I anticipate being able to put some time into this over the weekend, then releasing an updated NuGet package once we get it figured out. @StendProg is making excellent progress in #539, so I anticipate we will figure this out soon!