Understanding Mod Family/Group

I just learned about the existence of mod families today while reading a wiki page about Recombinators. There seems to be scant information about this online. I'm still hazy on how this system works, so would greatly appreciate anyone helping to explain it.

Take this screenshot from Craft of Exile for example. It's on the wands page. Where is the mod family shown? Is it that number on the right (purple or blue)? If so, that would mean that "+1 level of chaos gems" and "+1 level of cold gems" can't roll on the same item, because they are both in the 7 family, right?

Is this exclusive inside prefixes and suffixes groups? Ex, Could I roll a wand with "increased cold damage" as prefix and "increased attack speed as suffix, even though they are both in family 1?

What about the modifiers with no number to the right of them (like the suffix, chance to ignite)? Does that just mean they can never be blocked by another mod?

Thanks for your help!

"

Stebobibo#0581 wrote:

If so, that would mean that "+1 level of chaos gems" and "+1 level of cold gems" can't roll on the same item, because they are both in the 7 family, right?

Yes, you'll quickly notice certain patterns of mod families. "damage per charge" and +gem lvl are very obvious.

"

Stebobibo#0581 wrote:

Is this exclusive inside prefixes and suffixes groups? Ex, Could I roll a wand with "increased cold damage" as prefix and "increased attack speed as suffix, even though they are both in family 1?

Yes, these numbers are only being set by craftofexile to simplify and visualize the grouping and are exclusive to prefixes and suffixes.

"

Stebobibo#0581 wrote:

What about the modifiers with no number to the right of them (like the suffix, chance to ignite)? Does that just mean they can never be blocked by another mod?

Correct, these modifiers can always roll.

Yes it is, exactly as you have described, prefixes are separate from suffixes for this purpose.

This mainly relates to using the crafting bench and the other crafting blocks listed on the page. If you scroll down on that page you will see a block for crafting there. Any numbers that double up you will not be able to add via crafting bench if you already have one from that group. Mods that don't have a group number aren't available on the crafting bench, so you can not use them for blocking.

Recombination is a fair bit more complicated. It uses all this information but there is a lot of other aspects. It's not documented as thoroughly and I think might not be completely solved in it's current form, even though people have put a lot of work into figuring it out and have more or less solved it.

You can still get good result without understanding it completely, but if you want to learn some more about it, this is the most useful resource I know of:

https://www.reddit.com/r/pathofexile/comments/1exyavx/325_updated_guide_to_recombinators/

It might be a bit confusing until you have a complete grasp of the basic crafting options and all the other methods, as it combines them all together.

Thanks you guys for answering all my questions!

mod group is not a subset of prefix or suffix, they are mods that are from the same mod group but different affix (can't remember exact example)