Tradestation easylanguage indicators to Sierra Charts

January 9th, 2015, 01:11 AM

Thanks for all the help.
Things are looking better.
I have put the MRO headache on hold until some smaller issues can be solved and come back to the MRO issue later

The issue im working on now is:
In Tradestation if i wanted to access a previous value in a non persistent variable i would use.

value2 = average / 18; put in a new value
value3 = value2[1]; read out the previous value from the value2

In Sierra how would I get the previous value from value2 ?

January 30th, 2015, 12:35 AM

I see that my post has gotten 300 + views but only 2 people stepped up to offer assistance.
Thanks again to those 2 people.

Anyway, after finding out that its a waste of time to even ask Sierra support for assistance with using their product.
Tradestation and Sierra support is like night and day.
Tradestation support steps up right away to help the users of their software, Sierra will tell you a "Its easy to program" and then don't post any example code and then never reply to the post again.

After a lot of cursing, I`m getting closer to getting the TS indicator ported over..
Now I need to know how to plot a point at a specified price on the chart at sc.index current bar.

I`m temped to just give up on Sierra charts and stick with Tradestation.
The EL language makes common sense and if you have a coding problem, the techs step up right away to answer your post until the problem is solved.

Sierra support, forget about it.

January 30th, 2015, 06:12 AM

Renko123

Thanks for all the help.
Things are looking better.
I have put the MRO headache on hold until some smaller issues can be solved and come back to the MRO issue later

The issue im working on now is:
In Tradestation if i wanted to access a previous value in a non persistent variable i would use.

value2 = average / 18; put in a new value
value3 = value2[1]; read out the previous value from the value2

In Sierra how would I get the previous value from value2 ?

This is exactly the same in Sierra. You can get previous values in an array the same way.

value3 = value2[1];

So you have to use arrays to store the values.

January 30th, 2015, 08:22 AM

ehlaban

This is exactly the same in Sierra. You can get previous values in an array the same way.

value3 = value2[1];

So you have to use arrays to store the values.

Yes, in Sierra have to create an array and loop to fill it.
double value2[11];
for ( int i = sc.Index; i >= sc.Index -10; i--)
{
value2[i] = fabs (sc.Close[i -10] - sc.Close[i]);
}

However in TS you don't have to deal with creating an array and looping to fill it.
value2= fabs (sc.Close[i -10] - sc.Close[i]);
and when you need that value later just call it.
value3=value2[1];

Unless, I`m wrong with having to loop to fill the array in Sierra?

How would I plot a dot on the chart on the current bar with Sierra?

In TS it is simple:
PLOT1 (value3, "ExitPrice") ;

Thanks for all your help again.

January 31st, 2015, 02:40 AM

SCSubgraphRef PLOT = sc.Subgraph[0];

// Section 1 - Set the configuration variables and defaults
if (sc.SetDefaults)
{

PLOT.Name = "ExitPrice";
PLOT.DrawStyle = DRAWSTYLE_POINT;

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

PLOT[sc.Index]=value3;

January 31st, 2015, 03:32 AM

Renko123

Yes, in Sierra have to create an array and loop to fill it.
double value2[11];
for ( int i = sc.Index; i >= sc.Index -10; i--)
{
value2[i] = fabs (sc.Close[i -10] - sc.Close[i]);
}

However in TS you don't have to deal with creating an array and looping to fill it.
value2= fabs (sc.Close[i -10] - sc.Close[i]);
and when you need that value later just call it.
value3=value2[1];

Unless, I`m wrong with having to loop to fill the array in Sierra?

How would I plot a dot on the chart on the current bar with Sierra?

In TS it is simple:
PLOT1 (value3, "ExitPrice") ;

Thanks for all your help again.

Look at the source code i provided especially at calcArray
In Sierra you normally don't have to fill an array with a loop as it's the same as in TS or Easylanguage.

Just define an array.
While calculating your indicator (it starts from the first chart point) fill your array as well just like value2[sc.Index]
if you have defined a name and drawstyle for calcArray it plots automatically, like in TS
calcArray.Name = "myLine";
calcArray.DrawStyle = DRAWSTYLE_LINE;

January 31st, 2015, 04:30 PM

crazybears

SCSubgraphRef PLOT = sc.Subgraph[0];

// Section 1 - Set the configuration variables and defaults
if (sc.SetDefaults)
{

PLOT.Name = "ExitPrice";
PLOT.DrawStyle = DRAWSTYLE_POINT;

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

PLOT[sc.Index]=value3;

Since I already have a reference that uses sc.Subgraph[0].
I used sc.Subgraph[1] unless multiple refs can use the same sc.Subgraph[0]?
Plot still isn't applied at the correct place on the chart.

Code

SCSubgraphRef Sideways = sc.Subgraph[0];
SCSubgraphRef bullish  = sc.Subgraph[1];

bullish.Name = "Bullish"; 
bullish.DrawStyle = DRAWSTYLE_POINT;

futher down into the processing code I applied.
bullish[sc.Index] = 4155.00;  // hard coded to test if plot shows up.

The plot does not show up at 4155.00, it shows up at the top of the bar only
See image.

January 31st, 2015, 05:28 PM

ehlaban

Look at the source code i provided especially at calcArray
In Sierra you normally don't have to fill an array with a loop as it's the same as in TS or Easylanguage.

Just define an array.
While calculating your indicator (it starts from the first chart point) fill your array as well just like value2[sc.Index]
if you have defined a name and drawstyle for calcArray it plots automatically, like in TS
calcArray.Name = "myLine";
calcArray.DrawStyle = DRAWSTYLE_LINE;

I looked at it and it just confuses me more.
Are you saying that if I do this:

double value2[6]; declare array
value2[sc.Close[sc.Index -3] - sc.Close[sc.Index]] ;

That it will fill all 7 place holders in the array without me having to "for" loop thru manually and fill it?

I tried that and got an "Error: expression must have and integral or enum type".

February 1st, 2015, 04:15 AM

Working with Arrays and Looping - Sierra Chart

No

sc.Subgraph[0]
sc.Input[0]
are arrays, so:

SCSubgraphRef IndicatorLine = sc.Subgraph[0]; //Output line an first array
SCInputRef firstInput = sc.Input[0]; // Input for Indicator
SCFloatArrayRef calcArray = IndicatorLine.Arrays[0]; // can be used for calculations if needed

are all array definitions with a normal name like calcArray.
Those arrays are always the same size as there are bars in the chart. When loaded with auto looping
and sc.Index everything is calculated from the first bar to the last. sc.Index keeps track of it.

if you want to lookup values 3 bars to the left [sc.Index-3] and you start from 0 you should do something like:

if (sc.Index < 2) Filt[sc.Index] = sc.BaseDataIn[SC_LAST][sc.Index];
else Filt[sc.Index] = c1 * (sc.BaseDataIn[SC_LAST][sc.Index]

Renko123

I looked at it and it just confuses me more.
Are you saying that if I do this:

double value2[6]; declare array
value2[sc.Close[sc.Index -3] - sc.Close[sc.Index]] ;

That it will fill all 7 place holders in the array without me having to "for" loop thru manually and fill it?

I tried that and got an "Error: expression must have and integral or enum type".

February 1st, 2015, 05:18 PM

Renko123

Since I already have a reference that uses sc.Subgraph[0].
I used sc.Subgraph[1] unless multiple refs can use the same sc.Subgraph[0]?
Plot still isn't applied at the correct place on the chart.

Code

SCSubgraphRef Sideways = sc.Subgraph[0];
SCSubgraphRef bullish  = sc.Subgraph[1];

bullish.Name = "Bullish"; 
bullish.DrawStyle = DRAWSTYLE_POINT;

futher down into the processing code I applied.
bullish[sc.Index] = 4155.00;  // hard coded to test if plot shows up.

The plot does not show up at 4155.00, it shows up at the top of the bar only
See image.

Ok, I got the plot working now.
Issue was the setting in the study on the chart.
Even tho i had the bullish.DrawStyle = DRAWSTYLE_POINT the chart was overriding the code by having the "point high" selected in the DrawStyle.

Thanks for the help. the plotting problem is fixed.

Tradestation easylanguage indicators to Sierra Charts

Discussion in Sierra Chart

Tradestation easylanguage indicators to Sierra Charts