Accessing values in the Trendline Indicator

Delta_Gamma
12 Feb 2014, 08:08

Any chance of a reply?

It's been a week.

Spotware
12 Feb 2014, 11:18

It is not possible with current version of that indicator. You can modify the indicator and instead of drawing lines as chart objects you can put values to DataSeries and then you will be able to use it in cBot or another indicator.

Delta_Gamma
13 Feb 2014, 13:10

Hi, thanks for the reply.

Can you please help me or direct me to where I can find out how to modify the indicator in that way? I am afraid I have no idea where to begin.

Perhaps you could provide some code?

Thanks again!

Delta_Gamma
13 Feb 2014, 13:17

Hi sorry to post again but I forgot about this..

I am also trying to get parameters for the Linear Regression Channel indicator. I appreciate that these indicators have been posted but my problem is I cannot use them in my robot because they have no parameters, I have checked the documentation but I am still unsure what to do. For example, this is the code from the Linear Regression Channel

 protected override void Initialize()
        {
            // Parse color from string, e.g. "Yellow", "Green", "Red". string must start with large letter, "Red" is valid, "red" - not.
            if (!Enum.TryParse(Color, out color))
                color = Colors.Yellow;
        }

        public override void Calculate(int index)
        {
            if (IsLastBar)
                LinearRegression(MarketSeries.Close);
        }

        private void LinearRegression(DataSeries series)
        {
            // Linear regresion

            double sum_x = 0, sum_x2 = 0, sum_y = 0, sum_xy = 0;

            int start = series.Count - Bars;
            int end = series.Count - 1;

            for (int i = start; i <= end; i++)
            {
                sum_x += 1.0 * i;
                sum_x2 += 1.0 * i * i;
                sum_y += series[i];
                sum_xy += series[i] * i;
            }

            double a = (Bars * sum_xy - sum_x * sum_y) / (Bars * sum_x2 - sum_x * sum_x);
            double b = (sum_y - a * sum_x) / Bars;


            // Calculate maximum and standard devaitions

            double maxDeviation = 0;
            double sumDevation = 0;

            for (int i = start; i <= end; i++)
            {
                double price = a * i + b;
                maxDeviation = Math.Max(Math.Abs(series[i] - price), maxDeviation);
                sumDevation += Math.Pow(series[i] - price, 2.0);
            }

            double stdDeviation = Math.Sqrt(sumDevation / Bars);

            // draw in future
            end += 20;

            double pr1 = a * start + b;
            double pr2 = a * end + b;

            if (ShowCenter)
            {
                ChartObjects.DrawLine("center", start, pr1, end, pr2, color, LineThickness, LineStyle.Lines);
            }

            if (ShowChannel)
            {
                ChartObjects.DrawLine("top", start, pr1 + maxDeviation, end, pr2 + maxDeviation, color, LineThickness, LineStyle.Solid);
                ChartObjects.DrawLine("bottom", start, pr1 - maxDeviation, end, pr2 - maxDeviation, color, LineThickness, LineStyle.Solid);
            }

            if (ShowDeviantion)
            {
                ChartObjects.DrawLine("dev-top", start, pr1 + stdDeviation, end, pr2 + stdDeviation, color, LineThickness, LineStyle.DotsVeryRare);
                ChartObjects.DrawLine("dev-bottom", start, pr1 - stdDeviation, end, pr2 - stdDeviation, color, LineThickness, LineStyle.DotsVeryRare);
            }
        }

    }

All I want to be able to do is make it so my cbot buys when the price is under the bottom parallel line and sells when the price is above the top parallel line. I'm not sure how to convert the ChartObject into a parameter.

Thanks.

Spotware
13 Feb 2014, 14:06

We can recommend you to post a job here: /jobs/

Also you can contact one of cAlgo consultants: /consultants/