I am trying to put together a D&D character sheet in obsidian using the dataview plugin. It is going well but I have run into the fact some stats which I want to display (e.g. AC) are a function of Ability Modifiers (e.g. Con of +3) which themselves are a function of the character's Ability Scores (e.g. Con of 16).
As far as I can see, dataview lets you define variables (properties) in the front matter of a page and then reference them on different pages, but I cant seem to find a way to define one of these variable as a function of other variables.
I have tried this kind of thing with no success:
---
con: 16
conmod: floor((number(this.con) - 10)/2)
ac: 10 + this.conmod
---
`=ac`
This video was super helpful but only got me so far... Any advice? Maybe this is just a limitation of dataview.
Basically solved! Code is as follows. This requires dataview and numerals add-ons for obsidian. I think there is some weird behaviour with the floor function that should be at the start of the g(x) function but i would guess that it is because it isnt a function that numerals supports perhaps? I haven't looked at this yet.
--- numerals: all
strsco: 10
consco: 16
dexsco: 16
intsco: 10
wissco: 12
chasco: 8
---
```math
# define ability modifier calculation function
g(x) = (x - 10)/2
# ability scores are specified in the properties
# calculate the modifiers using the ability modifier function g(x)
@[strmod::0] = g(strsco)
@[conmod::3] = g(consco)
@[dexmod::3] = g(dexsco)
@[intmod::0] = g(intsco)
@[wismod::1] = g(wissco)
@[chamod::-1] = g(chasco)
# calculate AC
@[ac::16] = 10 + conmod + dexmod
```
AC is `=this.ac`
References:
Props to you for coming back and posting your solution.