Correlation Chart

[#1]

I have time series numeric data for all my sales items. I would like to correlate each item’s Invoice amount in that particular time period. I am able to correlate very easy in R (that may be because I am familiar with R

But cool thing with Qlik is ‘Interactive’ and I can pick and choose Water with Bread or Water with Milk or Milk with Cheese. In fact that is my requirement. My user want to pick and choose these items and would like to know correlation between those items.

Is this possible?

I found the similar solution Adrien Allard (130205_correlation.qvw) but not much luck with my data.

https://community.qlik.com/thread/84477

My sample Data

InvoiceDate	Item Name	Invoice Amount
2/20/2015	Water	20.75
2/21/2015	Water	21.75
2/22/2015	Water	22.75
2/23/2015	Water	23.75
2/24/2015	Water	68.11
2/20/2015	Bread	390
2/21/2015	Bread	520
2/22/2015	Bread	520
2/23/2015	Bread	520
2/24/2015	Bread	880
2/20/2015	Milk	2614.8
2/21/2015	Milk	2614.8
2/22/2015	Milk	2614.8
2/23/2015	Milk	2614.8
2/24/2015	Milk	2614.8
2/20/2015	Cheese	3268.5
2/21/2015	Cheese	3922.2
2/22/2015	Cheese	5229.6
2/23/2015	Cheese	7844.4
2/24/2015	Cheese	785.38

Please help.

[#2]

Thank you again for taking sometime to help others.