# Indicators | How to Plot ROC of multiple symbols on same chart

Modified on 2010/03/14 17:13 by Eugene — Categorized as: Knowledge Base

Suppose your task is to plot ROC - or any other indicator - of all the symbols from a DataSet in one single pane. For example, you have IBM, AAPL, INTC in a DataSet, and you would like to plot ROC for each one of them on top of each other.

With Wealth-Lab .NET, it's easily possible. Here's a short code snippet:

``` using System; using System.Collections.Generic; using System.Text; using System.Drawing; using WealthLab; using WealthLab.Indicators;namespace WealthLab.Strategies { public class MyStrategy : WealthScript { Random r = new Random(); private Color RandomColor() { Color randomColor = Color.FromArgb(r.Next(255), r.Next(255), r.Next(255)); return randomColor; } protected override void Execute() { string clickedSym = Bars.Symbol; List rocList = new List(); foreach( string ds in DataSetSymbols ) { //if( ds != clickedSym ) rocList.Add( ROC.Series( GetExternalSymbol( DataSetSymbolsDataSetSymbols.IndexOf(ds), true ).Close, 10 ) ); } HideVolume(); ChartPane rocPane = CreatePane( 100, true, true ); foreach( DataSeries ds in rocList ) PlotSeries( rocPane, rocListrocList.IndexOf(ds), RandomColor(), LineStyle.Solid, 1 ); } } } ```

Highlights:

• You need to loop over the DataSet's symbols (see: DataSetSymbols)
• Add each symbol's ROC (or another indicator) to the List of DataSeries created before (see: rocList)
• Then, you loop by that List and plot each series
• Look up the helpful List.IndexOf method in MSDN
• RandomColor is self-descriptive