Trade Power vs Trade power share - A noobs question

[marnoerzob08]

Hello people.

This will be my first forum post ever, so sorry if this is placed at a wrong section. I just started playing EU4, and I must say I love it so far. However I have found a "problem" i cant get my head around - see picture.

It's is regarding tradepower and how the game comes to its final calculation.

When i look at my tradenote it says I have 28% of the total trade power. In my head the calculation for how much gold I should earn is then

6.16 x 0.28 = 1.7248 -> 1.7248 x 1.25 (trade boost) = 2.156 - this is wrong and i know it

When i scroll over my earning it says that my "Trade Power Share" is 36.9%.

6.16 x 0,369 = 2.273 -> 2.273 x 1.25 = 2.84 - this is right.

Now my 2 questions.

Why is the number showing at the tradenote (28) and the trade power share (36.9) not the same in the game?

How does it arrive to the 36.9 - where can i find those adding modifyers. I have searched the interface, wiki's and youtube for guide but none adresses this specific. It is driving me mad when i dont know the concept behind it.

Can anyone help me out here. Much love - have an good evening - Denmark

 

[Turbo215]

Is it possible that you aren't taking into account outgoing trade? Total value (in the sense of what trade power in that node leads to, either trade power retains value or it causes it to leave) of a node equals retained value plus outgoing you have 28% of this total trade power however because about 25% is outgoing, you have more trade power relative to the total amount that is used for collecting trade with other nations (Castile and Granada only in this case I'd imagine? although there might be others) so you have 36.9% of all of the trade power that is retaining trade, this is my guess anyway.

 

[Brynjar]

The trade power share (36.9%) appears to be your share of the value retained in the node. In your case this is 2.27(base amount you collect)/6.16 (Total collected in the node)=0.3685.
If you hover your mouse over the left chart (Retained trade value) you can see who collects in the node (green part) and who is transfering trade power (red part of the chart).

The 28% is your share of the total tradepower in the node, after modifiers. This is calculated based on the rightmost column ("Sort by current Trade Power")
If you calculate your share of the total in node 0.28*8.08=2.2624 you'll end up with the same number as you collect (with some rounding errors).

 

[marnoerzob08]

The trade power share (36.9%) appears to be your share of the value retained in the node. In your case this is 2.27(base amount you collect)/6.16 (Total collected in the node)=0.3685.
If you hover your mouse over the left chart (Retained trade value) you can see who collects in the node (green part) and who is transfering trade power (red part of the chart).

The 28% is your share of the total tradepower in the node, after modifiers. This is calculated based on the rightmost column ("Sort by current Trade Power")
If you calculate your share of the total in node 0.28*8.08=2.2624 you'll end up with the same number as you collect (with some rounding errors).

Thank you! now the numbers add up. Then my next question is. Should I then be afraid of outgoing trade?

if I have 50% retained and another have 50% outgoing - its not directly influencing me? Ofc if i went from 70%-50% I would lose out, but now if i go from 28%-50% it would still benefit me.

Since the math is applied to the total (before subtrating the outgoing) what is the danger?

 

[marnoerzob08]

Is it possible that you aren't taking into account outgoing trade? Total value (in the sense of what trade power in that node leads to, either trade power retains value or it causes it to leave) of a node equals retained value plus outgoing you have 28% of this total trade power however because about 25% is outgoing, you have more trade power relative to the total amount that is used for collecting trade with other nations (Castile and Granada only in this case I'd imagine? although there might be others) so you have 36.9% of all of the trade power that is retaining trade, this is my guess anyway.

Edit: My guess is if you do 0.28x(retained+outgoing) then multiplied by trade efficiency you would get approx. about what you should be.

Edit 2: This is about 2.68, so close but i guess the rounding off really hurts the accuracy(or i'm missing something about how the tool tip displays this)

Thank you! now the numbers add up. Then my next question is. Should I then be afraid of outgoing trade?

if I have 50% retained and another have 50% outgoing - its not directly influencing me? Ofc if i went from 70%-50% I would lose out, but now if i go from 28%-50% it would still benefit me.

Since the math is applied to the total (before subtrating the outgoing) what is the danger?

 

[rinehime]

Thank you! now the numbers add up. Then my next question is. Should I then be afraid of outgoing trade?

if I have 50% retained and another have 50% outgoing - its not directly influencing me? Ofc if i went from 70%-50% I would lose out, but now if i go from 28%-50% it would still benefit me.

Well, you don't want any outgoing trade in your home node. You want to increase your trade power, which you can do by (roughly in order of best ROI to worst)

1. Conquer provinces in the node, especially provinces with trade bonuses
2. Conquer provinces in a downstream node.
3. Build trade buildings in provinces with trade bonuses
4. Protect trade / hunt pirates w/ light ships,
5. Develop your provinces

Most of the options beside conquest offer diminishing returns, as an increase (x2) in trade power from 20 to 40 in a node with 80 total TP (at start) brings your share from 25% to 40% (+15%), but a doubling in TP from 60 to 120 in a node with 80 (at start) is only a 10.7% increase (75% to 85.7%)

Since the math is applied to the total (before subtrating the outgoing) what is the danger?

I'm not sure what you mean by this.... Your total trade power in the node determines the percent of trade remaining in the node vs. outgoing. The "math" is applied at two steps.

1. Split all nations with TP in node into "collecting" vs "transferring". % of TP collecting vs. transferring determines how much trade value stays in the node vs leaves the node
2a. Collecting: Divvy up Trade value remaining in the node to nations collecting based on their share of power among nations collecting. (Note: this is always strictly >= total %TP). Modify this value by trade efficiency to determine income.
2b. Steering. Split outgoing trade between outgoing routes according to % of TP among nations steering. (=/= nations transferring) There are some modifiers that affect TP for steering calculations only. If no nations are steering, than transferred trade gets split equally between outgoing routes.

There's a pretty decent tutorial floating around either in the guides section of the forum or on youtube. If I get a chance to look for it, I'll post it.