Need help in understanding sierrachart scripting

December 6th, 2016, 10:52 AM

Dear Sierrachart programmers, i am starting to study the sierrachart programming language and would need some help.

As this is all new for me, i would greatly appreciate if somebody can give me an example simple sourcecode of an indicator that would have 1 output (a line or an historigram, separated from main chart, to appear in a panel below the primary chart).

This historigram output would simply have a value of "1" if the close price of a bar is higher than the close price of the previous bar, and -1 if lower.

It would be very helpful in starting to understand the basis of the programming language for me!

thank you very much

December 6th, 2016, 10:53 AM

w4rn1ng

Dear Sierrachart programmers, i am starting to study the sierrachart programming language and would need some help.

As this is all new for me, i would greatly appreciate if somebody can give me an example simple sourcecode of an indicator that would have 1 output (a line or an historigram, separated from main chart, to appear in a panel below the primary chart).

This historigram output would simply have a value of "1" if the close price of a bar is higher than the close price of the previous bar, and -1 if lower.

It would be very helpful in starting to understand the basis of the programming language for me!

thank you very much

Sierra chart includes all the indicators in source code (look in ACS_Source in your sierrachart instalaltion), so there's plenty of examples

December 6th, 2016, 11:12 AM

uhm.. i used to give a fast look to the studies*.cpp files but got literally scared from the lenght of such files (7000 lines of code in a single sourcefile!).

Now i see in one single file there are many indicators coded, so it start making some sense..

I will look deep into them, thank you for pointing it out to me! Appreciated

December 6th, 2016, 11:19 AM

SC also puts the code to the User Contributed studies on their site - User Contributed Advanced Custom Study System Source Code - Sierra Chart

(A big thanks to @aslan and the other FIO members who've contributed to it!)

December 6th, 2016, 12:15 PM

Thanks so far for the support, i'm having some difficulties in putting down some code.

What i would like to do, is doing something like this:

double calculationarray[1000][10][10];

basically the first [1000] would be used as [sc.Index], the other [10][10] are needed for calculations.

then we would have a for loop:

int k;
for(k=0;k<10;k++){
calculationarray[sc.Index][k][3]=blablabla...;
}

but i get some errors when i try to compile the dll:

error C2109: subscript requires array or pointer type >> this is for the lines inside the loop {}

what can be a correct way to make this work?

Edit: i solved the situation by doing many two dimensional arrays instead of a single big three dimensional array.

December 8th, 2016, 08:25 PM

// The top of every source code file must include this line
#include <windows.h>
#include "sierrachart.h"

SCDLLName("Examplecode4w4rn1ng")

SCSFExport scsf_Examplecode4w4rn1ng(SCStudyInterfaceRef sc)
{
SCSubgraphRef CloseAboveBelowPrevious = sc.Subgraph[0];

// Section 1 - Set the configuration variables and defaults
if (sc.SetDefaults)
{
sc.GraphName = "Examplecode4w4rn1ng";

// During development set this flag to 1, so the DLL can be rebuilt without restarting Sierra Chart. When development is completed, set it to 0 to improve performance.
sc.FreeDLL = 1;

sc.AutoLoop = 1; //Automatic looping is enabled.
sc.GraphRegion = 1;

CloseAboveBelowPrevious.Name = "CloseAboveBelowPrevious";
CloseAboveBelowPrevious.DrawStyle = DRAWSTYLE_BAR;
CloseAboveBelowPrevious.LineWidth = 5;
CloseAboveBelowPrevious.PrimaryColor = RGB (0, 0, 255);

return;
}
// Section 2 - Do data processing here

int& PreviousIndex = sc.GetPersistentInt(1);

if(PreviousIndex != sc.Index){
if(sc.Close[sc.Index] > sc.Close[sc.Index - 1])CloseAboveBelowPrevious[sc.Index] = 1;
else if(sc.Close[sc.Index] == sc.Close[sc.Index - 1])CloseAboveBelowPrevious[sc.Index] = 0;
else CloseAboveBelowPrevious[sc.Index] = -1;
}

PreviousIndex = sc.Index;
}

December 9th, 2016, 06:18 PM

https://www.sierrachart.com/index.php?page=doc/ACSIL_Members_scSubgraph.html

December 9th, 2016, 06:24 PM

Thanks, i did already found it so i had deleted the post, i must say sierrachart is very powerful!

Need help in understanding sierrachart scripting

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Need help in understanding sierrachart scripting