Intraday Volatility Indicators

[jfust]

I'm looking to create a scanner that alerts me to big spikes in intraday implied volatility for a stock. There are tons of indicators out there and I'm not really sure where to start. I currently have a roundabout way of doing this which targets large stock price changes but am trying to create something much more direct that targets volatility. Looking to see if anyone has something like this built or if someone can point me in the right direction for detecting these big intraday volatility spikes.

 

[DLCjr]

This does not work interday, but it does track the 60 day vs 30 day volatility of options (vix3M and VIX). The VXST is not working in tos. I'm checking with custom support to sii if the ticker has been changed.

declare lower;
declare hide_on_intraday;

input STsymbol = "VIX";
input LTsymbol = "VIX3M";
input avgLength = 10;

#Removing the #'s will plot VXST vs. VIX as well
#VXST represents the IV of 9 day options
input STsymbol2 = "VXST";
input LTsymbol2 = "VIX";

def shor = close(STsymbol);
def lt = close(LTsymbol);
def shor2 = close(STsymbol2);
def lt2 = close(LTsymbol2);

plot avg = (average(shor,avgLength)/average(lt,avgLength));
plot ratio = shor/lt;

#plot ratio2 = shor2/lt2;
plot ratio2 = shor2/lt2;
plot plus = 1;
plot zero = .92;
plot low = .8;

ratio.SetDefaultColor(GetColor(1));