I have this dataset (just a sample):
product1,product2,product3
product1,product4
product1,product2
product4,product3,product1,product2
The products are grouped by transaction. I want to create some data visualization using this dataset but I don't any tool or any type of visualization that allows creating some visualization with this structure...
Anyone can suggest me an option?
Thanks!
I feel desperate because they can not find anything that suits this data structure

I want to find the strenght like a heat-map or a grid chart...A visualization that allows me to conclude what the most frequently item purchase together...but with this strucuture I can't find any tool – SaCvP Oct 11 '16 at 21:49
awk, for example:awk -F, '{split($0,a,",");asort(a);for(i=1;i<=NF;i++){for(j=i+1;j<=NF;j++){print a[i],a[j]}} }' < sample.txt | sort | uniq -c| sort -rn- produces a list of pairs with occurrence counts. – Spacedman Oct 12 '16 at 11:13