Function scaleIsLinear

src/traces/heatmap/calc.js:92–103

(s)

    }

    function scaleIsLinear(s) {
        if(s.length > 1) {
            var avgdx = (s[s.length - 1] - s[0]) / (s.length - 1);
            var maxErrX = Math.abs(avgdx / 100);
            for(i = 0; i < s.length - 1; i++) {
                if(Math.abs(s[i + 1] - s[i] - avgdx) > maxErrX) {
                    return false;
                }
            }
        }
        return true;
    }

    // Check whether all brick are uniform
    trace._islinear = false;