# Source: calculateEnvelopeIntensity.js

    /**
     * Code to normalize the Intensity.
     * Take the average of intensity from the peaks entered by the user.
     * Take the average of the calculated distribution for each Array element in the Array.
     * Make both of them equal and calculating the rest of the
     * distribution intensity based on the avg value from the peak list.
     * @param {Array} totDistributionList - Total distribution calculated
     * @param {Array} peakDataList - Peak Data entered by the user
     */
    function getNormalizedIntensity(totDistributionList,peakDataList)
    {
        let len = totDistributionList.length;
        let peakListLen = peakDataList.length;
        let intensity = 0;
        let count = 0 ;
        let distributionInte = 0;
        for(let i=0;i<len;i++)
        {
            for(let j=0;j<peakListLen;j++)
            {
                if(Math.abs(totDistributionList[i].mz - peakDataList[j].mz) <= this.toleraceMassDiff )
                {
                    intensity = intensity + peakDataList[j].intensity ;
                    distributionInte = distributionInte + totDistributionList[i].intensity;
                    count = count + 1;
                }
            }
        }
        let avg = intensity/count ;
        let distributionAvgInte = distributionInte/count;
        for(let i=0;i<len;i++)
        {
            totDistributionList[i].intensity = (avg * totDistributionList[i].intensity)/distributionAvgInte ;
        }
        return totDistributionList ;
    }