function getRegressionPoints(data,xVal,yVal,order = 1) {
    console.log('data reglines', data)
    var newData = [];
    var xArr = [], yArr = [];
    data.forEach(d => {
        if (d[yVal]) {
            xArr.push(d[xVal]);
            yArr.push(d[yVal]);
        }
    });


    var xMatrix = [];
    var xTemp = [];
    var yMatrix = numeric.transpose([yArr]);
    
    console.log('yMatrix', yMatrix)
    for (j=0;j<xArr.length;j++)
    {
        newData.push({x:xArr[j],y:yArr[j]});
        xTemp = [];
        for(i=0;i<=order;i++)
        {
            xTemp.push(1*Math.pow(xArr[j],i));
        }
        xMatrix.push(xTemp);
    }
        
    var xMatrixT = numeric.transpose(xMatrix);
    var dot1 = numeric.dot(xMatrixT,xMatrix);
    console.log('xMatrix',xMatrix)
    console.log('xMatrixT',xMatrixT)
    console.log('dot1',dot1)
    console.log('dot1 - reverse order',numeric.dot(xMatrix,xMatrixT))
    var dotInv = numeric.inv(dot1);
    console.log('dotInv',dotInv)
    var dot2 = numeric.dot(xMatrixT,yMatrix);
    console.log('dot2',dot2)
    var solution = numeric.dot(dotInv,dot2);
    console.log('solution',solution)

    var lineData = [];
    newData.forEach(d => {
        var x = d.x;
        var y = 0;
        solution.forEach((v,i) => y += v * Math.pow(x,i))
        lineData.push({x:x,y:y});
    })

    return lineData;
}