Support Board
Date/Time: Thu, 28 Nov 2024 22:30:58 +0000
Custom Made Study Cannot Calculate Back in Time
View Count: 389
| [2023-03-22 15:34:58] |
| User286186 - Posts: 22 |
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Hello I just coded a study in ACSIL that should display a line. The problem is that it only start to diplay the line from the moment I upload the study to the chart (as you can see on the screenshot). I tried to add a sc.DataStartIndex statement but it does not solve the problem. #include "sierrachart.h" // KST SCDLLName("KST") SCSFExport scsf_KST(SCStudyInterfaceRef sc) { SCInputRef Input_W24 = sc.Input[0]; SCInputRef Input_W18 = sc.Input[1]; SCInputRef Input_W12 = sc.Input[2]; SCInputRef Input_W6 = sc.Input[3]; SCSubgraphRef Subgraph_KST = sc.Subgraph[0]; SCGraphData SmROC24Data; SCGraphData SmROC18Data; SCGraphData SmROC12Data; SCGraphData SmROC6Data; if (sc.SetDefaults) { sc.GraphName = "KST COMPOSITE INDICATOR"; sc.StudyDescription = "CFR. P. 788 OF THE BOOK"; sc.AutoLoop = 1; sc.GraphRegion = 0; Input_W24.Name = "Weight for 24-period"; Input_W24.SetInt(4); Input_W18.Name = "Weight for 18-period"; Input_W18.SetInt(3); Input_W12.Name = "Weight for 12-period"; Input_W12.SetInt(2); Input_W6.Name = "Weight for 6-period"; Input_W6.SetInt(1); Subgraph_KST.Name = "KST"; Subgraph_KST.DrawStyle = DRAWSTYLE_LINE; Subgraph_KST.PrimaryColor = RGB(0, 255, 0); Subgraph_KST.LineWidth = 1; Subgraph_KST.DrawZeros = false; return; } if (sc.IsFullRecalculation) { return; } // Using sc.GetStudyArraysFromChartUsingID(int ChartNumber, int StudyID, SCGraphData& GraphData). sc.GetStudyArraysFromChartUsingID(sc.ChartNumber, 33, SmROC24Data); sc.GetStudyArraysFromChartUsingID(sc.ChartNumber, 28, SmROC18Data); sc.GetStudyArraysFromChartUsingID(sc.ChartNumber, 26, SmROC12Data); sc.GetStudyArraysFromChartUsingID(sc.ChartNumber, 32, SmROC6Data); // Define references to subgraph arrays. SCFloatArrayRef SmROC24 = SmROC24Data[0]; SCFloatArrayRef SmROC18 = SmROC18Data[0]; SCFloatArrayRef SmROC12 = SmROC12Data[0]; SCFloatArrayRef SmROC6 = SmROC6Data[0]; float SmROC24LastValue = SmROC24[SmROC24.GetArraySize() - 1]; float SmROC18LastValue = SmROC18[SmROC18.GetArraySize() - 1]; float SmROC12LastValue = SmROC12[SmROC12.GetArraySize() - 1]; float SmROC6LastValue = SmROC6[SmROC6.GetArraySize() - 1]; int W24Value = Input_W24.GetInt(); int W18Value = Input_W18.GetInt(); int W12Value = Input_W12.GetInt(); int W6Value = Input_W6.GetInt(); Subgraph_KST[sc.Index] = (W24Value * SmROC24LastValue) + (W18Value * SmROC18LastValue) + (W12Value * SmROC12LastValue) + (W6Value * SmROC6LastValue); } |
Attachment Deleted.  Capture d’écran 2023-03-22 163422.png / V - Attached On 2023-03-22 15:34:35 UTC - Size: 61.02 KB - 74 views |
| [2023-03-22 15:45:42] |
| User431178 - Posts: 544 |
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The problem is that it only start to diplay the line from the moment I upload the study to the chart (as you can see on the screenshot).
if (sc.IsFullRecalculation) { return; } You will skip all bars during the initial calculation because of the above code. |
| [2023-03-22 15:51:14] |
| User286186 - Posts: 22 |
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Thank you for your help, but it does not solve the problem. I mean, it display the line now, but the value of the line is the same as the first value of when I launch my study (flat line --> see the screenshot).
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| Capture d’écran 2023-03-22 165051.png / V - Attached On 2023-03-22 15:51:01 UTC - Size: 19.21 KB - 77 views Attachment Deleted. |
| [2023-03-22 16:44:15] |
| User431178 - Posts: 544 |
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It solves exactly the problem that you mentioned... Can you not see why the line would be flat for the initial calculation? float SmROC24LastValue = SmROC24[SmROC24.GetArraySize() - 1]; float SmROC18LastValue = SmROC18[SmROC18.GetArraySize() - 1]; float SmROC12LastValue = SmROC12[SmROC12.GetArraySize() - 1]; float SmROC6LastValue = SmROC6[SmROC6.GetArraySize() - 1]; Every bar during the initial calculation is referencing the last value in the array, i.e. the last bar. Date Time Of Last Edit: 2023-03-22 16:45:01
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| [2023-03-22 16:59:27] |
| User286186 - Posts: 22 |
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You are right, my bad, sorry. Thanks a lot !
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