Mixing Indicator Time Frames (Weekly indicator on Daily chart)

[deepfoo_1]

Folks,

Here is something I'd like to do which ought to be fairly straightforward.

I'd like to be able to have up say a daily chart with the generic RSI(14) plotted as an indicator. As a second RSI indicator I'd like to be able to plot the RSI based on the weekly data for the given chart.

Is there a param to do this? Have I missed something?