The other two are, the 'if-expression' and the 'if-statement', both of which are documented at. Below you see 5 conditions and plots showing when each condition is true or false ( 1 or 0). The syntax for GetValue is: GetValue(IDataHolder data, IDataHolder dynamic offset, int max offset); A discussion of fold would not be complete without discussing the GetValue function. range (low to high). scan = chg >= percent; If there is no bar on a chart, like in pre and after-market hours or weekends and holidays, then results, including label values, from the date/time functions are not reliable. case "Advance/Decline Line (Daily)": The heart of the fold function is the 'do expression' which is crucial for success but is not naturally intuitive. The two ways above example, "value1 is what percent larger/smaller than value2." The fold will do some action but that action may be subject to certain conditions. The name "normal" above is unique to the RSI plot. Otherwise, you may not get an error but an 'ifthenelse' statement may not print. So the percentages shown are a sectors percent above or below the SPX value. A distance of +/- 3 SD from the average will include 99.7% of the 100 datapoints(0.997 X 100 = 99.7). Heres an interesting concept/tip that you may find very useful and its not obvious. The Revenue Optimization Analyst will track revenue over time and determine how . crossUp.setLineWeight(3); A useful external-to-TOS tool for comparison of symbols may be had at Symbol Comparison Tool #def AggPeriod = getAggregationPeriod(); def Pct_Avg = Volume(period = AggregationPeriod.DAY) / Average(volume(period = AggregationPeriod.DAY), length) * 100; AddLabel(yes, "Todays Vol = " + round(Pct_Avg,1) + " % of the " + length + "-day-average" ,color.PINK); #Hint: Shows a label of current Volume as a % of the input Period Average Volume\n Colors Label based on current Volume being > or < Average Volume. CloseLine.SetDefaultColor( Color.gray); #Hint: Plots the %-change-of-the-first-bar-value. Using multiple time frames to plan entries is smart ( See Article ). else if price == imp_volatility then "imp_volatility" http://en.wikipedia.org/wiki/List_of_colors:_A%E2%80%93F or http://en.wikipedia.org/wiki/X11_color_names . Plot scan = high > average(close,200) && low < average(close,200), Alternate 2: Price crosses the 200-day MA. The above is a study named Bar_Number_Plot_Interval.txt available at http://mytrade.com/StanL. Also the decimal places can be gotten by using the Round() function as shown above in the 'AsDollars' example. The def causes each bar to hold the value of bigCount and the folds 'do a + bigCount[1]' essentially causes each bar to be increased by a factor of 9 due to its looping. It provides a more responsive Stochastic for day trading. d.setDefaultColor(Color.White); #hint:Uses the VolumeAvg study and adds a label showing volume as the percent of the average daily volume. HH_LL_Pct.SetDefaultColor(Color.GREEN); A fixed word that identifies the following as a 'Fold' function. plot factorial = fold index = 1 to n + 1 with Var = 1 do Var * index; Calculates the factorial of a number. advances = close("$ADVA");
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