Geochem Data Format

A simple Geochemical Data file format design.

Example

{
    "date": "2021-02-01",
    "version": "0.02",
    "author": "Fred Yu, Pieter Vermeesch",
    "title": "AnAbOr",
    "type": "xyz",
    "reference": "Barker1979",
    "lines": {
	"1":[
	    [30,70,0],
	    [20,60,20],
	    [17.5,57.5,25],
	    [15,50,35],
	    [39,26,35]
	],
	"2":[
	    [48,32,20],
	    [20,60,20]
	],
	"3":[
	    [17.5,57.5,25],
	    [0,70,30]
	]
    },
    "type": {
	"1": "solid",
	"2": "solid",
	"3": "solid"
    },
    "polygons": {
	"A":[
	    [30,70,0],
	    [17.5,57.5,25],
	    [0,70,30],
	    [0,100,0]
	],
	"B":[
	    [30,70,0],
	    [20,60,20],
	    [80,0,20],
	    [100,0,0]
	],
	"C":[
	    [80,0,20],
	    [20,60,20],
	    [17.5,57.5,25],
	    [15,50,35],
	    [65,0,35]
	],
	"D":[
	    [65,0,35],
	    [0,0,100],
	    [0,70,30],
	    [17.5,57.5,25],
	    [15,50,35]
	]
    },
    "classes": {
    	"A": "Trondhjemite",
	"B": "Tonalite",
	"C": "Granodiorite",
	"D": "Granite"
    },
    "labels": {
	"Trondhjemite": [10,75,15,0],
	"Tonalite": [40,50,10,60],
	"Granodiorite": [30,42.5,27.5,60],
	"Granite": [15,25,60,0]
    }
}

Explanation

"classes" gives the full name of the different polygons.

"labels" uses names that are shown on the plot. If a diagram contains a lot of polygons (e.g., the TAS diagram), then it is advisable to use short labels instead of the full class names.

"labels" specifies the coordinates of the labels (first three elements if type=xyz, or the first two elements if type=xy) as well as their angle of rotation (in degrees, last element in the location vectors).