Is there a way to clear/refresh a plot in a loop?

[RickCIntel]

I'm trying to make a real time control chart that only displays the last 30 data points. Is there a way to refresh the plot?

[spatry]

I was able to do this by creating new plot for each refresh.  This ran flat out at about 130ms loop rate, so it's not for fast updates.

[LucLuc]

Are there any other ways to clear a graph without closing and created a new plot as suggested here?
I'm managing 2d matrix of plots and it take tens of seconds to use this tricks 😞