Script to find the area of shapes in Adobe Illustrator

GetShapeArea.jsx

/* Save this file with a jsx extension and place in your
Illustrator/Presets/en_US/Scripts folder. You can then
access it from the File > Scripts menu */

var decimalPlaces = 3;

function calculateArea (obj) {
	if (obj.typename == "PathItem") {
		return obj.area; // could be negative
	} else if (obj.typename == "CompoundPathItem") {
		var totalArea = 0;
		for (var i=0; i<obj.pathItems.length; i++) {
			totalArea += calculateArea(obj.pathItems[i]); // could be negative
		}
		return Math.abs(totalArea); // make sure positive
	} else if (obj.typename == "GroupItem") {
		var totalArea = 0;
		for (var i=0; i<obj.pathItems.length; i++) {
			totalArea += Math.abs(calculateArea(obj.pathItems[i])); // make sure positive
		}
		for (var i=0; i<obj.compoundPathItems.length; i++) {
			totalArea += calculateArea(obj.compoundPathItems[i]); // already positive
		}
		for (var i=0; i<obj.groupItems.length; i++) {
			totalArea += calculateArea(obj.groupItems[i]); // already positive
		}
		return totalArea; // already positive
	} else { // not path, compound path or group
		return 0;
	}
}

function convertArea (area) {
	var scaleFactor = 1;
	if (app.documents.length > 0 && app.activeDocument.scaleFactor != null) {
		scaleFactor = app.activeDocument.scaleFactor;
	}
	var ppi = 72;
	var result = {};
	area *= scaleFactor * scaleFactor;
	result.inch = area/ppi/ppi;
	result.cm = result.inch * 2.54 * 2.54;
	result.m = result.cm / 10000;
	return result;
}

if (app.documents.length > 0) {
	var objects = app.activeDocument.selection;

	var display = ["Shape Area"];

	// Collect info
	var totalArea = 0;
	for (var i=0; i<objects.length; i++) {
		var area = Math.abs(calculateArea(objects[i])); // need absolute in case of PathItems
		totalArea += area;
		
		var conv = convertArea(area);

		display.push(conv.inch.toFixed(decimalPlaces) + " in² / " + conv.cm.toFixed(decimalPlaces) + "cm² / " + conv.m.toFixed(decimalPlaces) + "m²");
	}

	var conv = convertArea(totalArea);
	display.push("Total Area: " + conv.inch.toFixed(decimalPlaces) + " in² / " + conv.cm.toFixed(decimalPlaces) + "cm² / " + conv.m.toFixed(decimalPlaces) + "m²");


	// Display
	alert(display.join("\n"));

}

You could try this code and see if semething related to large scale is in the attributes. I use these simple loops to find all items available through code.

items = []
for (attr in app.activeDocument){
    items.push(attr+", ")
}
alert(items)

Then you can alter the for loop if you a attribute you think is connected, then run it again pointing to that attribute

After checking, my earlier script did not get very far. Ive found this great read on StackExhange, it references the scripting reference PDF and the Illustrator settings file, probably it show the correct name for the scaling to get the value for scripting.

I think im gonna check tonight at home and dig through that preferences file see if i can find anything related. Though i would guess such a setting would be saved as a setting in the document. Ill chech that as well