plot CFTC COT disaggregated data

CFTC COT data is exported by quandl.com to tradingview
COT@quandl:
www.quandl.com/data/...s-and-Options-088691
COT@tradingview
www.tradingview.com/chart/?symbol=QUA...

How to use this script:
Select and load CFTC COT data for the commodity ticker in the chart
Will by default take current ticker, or allow to avvverride it with another
Traders' categories are those for commodities, not financial futs

Select And Configure :
-categories to be plotted
-Futures/Futures+Options
-by num_contracts/percent
-plot"Tot Spreads %" selection when also "Show as % of OI" selected

This script supercedes my other "MY_ CFTC GC/SI/CL (Disaggregated)" script