Fractional second handling (millisecond time)

[kuna-matata]

The following three threads discuss handling millisecond time. I got the data to display with R library(dygraphs), but dygraphs.js appears to truncate or round the data to the nearest second. Please consider adding support (or describe how) to resolve fractional seconds.

• https://github.com/danielkrizian/rChartsDygraphs/issues/7
• http://stackoverflow.com/questions/31299871/dygraph-millisecond-plotting
• https://github.com/rstudio/dygraphs/issues/46

[TonyDIRL]

This would be something I'd also be very interested to have answered.

[danvk]

Here's a repro: http://jsfiddle.net/eM2Mg/7082/

The chart is displayed fine, you just lose the milliseconds in the axis labels and legend.

[kuna-matata]

Interesting that danvk's example works. I'm running dygraphs through R. Perhaps that's the source of the issue. The following code executed in R reproduces the rounding issue for me:

library(xts) library(dygraphs) r = 5 t = seq(0,2pi,by=0.03) x = rcos(t) y = r*sin(t) t0 = Sys.time() ts = xts(y,t0-unclass(t0)+x) dygraph(ts)

[TonyDIRL]

Thanks for the response @danvk . I attempted to get this display working in dygraphs quite a while ago but I could never figure out the correct configuration of axisLabelFormatter and valueFormatter. http://jsfiddle.net/kaliatech/DfWNz/3/

Could you please suggest a workaround that would display milli's in the axis label and legend?

[hallegue]

Have anyone figured out how to force dygraphs to not truncate or round the data to seconds and display milliseconds?

[TonyDIRL]

Unfortunately I could never get this working. The plotly or highcharter packages handle subsecond plotting much better

[statquant]

It is really too bad dygraph is so much better at downsampling than plotly, but non-fractional second is just a no go for anyone in the finance field :(

[danvk]

Closed by #774