How can meaning be put into a chart analogous to binary options?

Question

Analytics

For example, take Forex
Lines are built on the basis of the purchase / sale of
a currency pair. moves on its own, but makes sense
Of course, you can build when put up / down, but what if there are no visitors?

Answer 1

https://codepen.io/nvdfxx/pen/vYONezd
Save everything to the localstore on every redraw
In general, it's better to hang it on the webworker so that it doesn't freeze when the tab is not active

Answer 2

Of course, you can build when they put up / down, but what if there are no visitors?

well, oddly enough, if no one does anything from what should be displayed on the chart, then there will be nothing on it or there will be a period of time in which the latest data available will be visible.

random doesn't fit

If you need the appearance of the fact that the data goes without the actions of someone, then randomly ... And what else?

so that the graph makes sense of its movement

let's first ask a normal question, so that the question has the meaning of its answer.