Companion planting chart

Does anyone have a link to what can and can't, what should and shouldn't be planted with other plants? Flowers with veggies
Herbs with veggies
Herbs with flowers
Veggies with veggies
etc...etc...etc...

I have read that you don't want to plant certain ones with others but nothing in a reference chart that is easy to read and use for planning a garden.

 

Here is another resource that I had saved to my favorites a while ago.

http://attra.ncat.org/attra-pub/complant.html

 

thank you, those links will help a lot. It finaly gave me what to search for and I have found a lot more resources for it also.