Incorrect Values for Slope of Stochastics

[waynecd]

Hi,
I have tried two formulas for slope but they produce wrong results. Any help is appreciated. Below are the two formulas and attached is a screen shot of the two studies on a graph. Thanks.
(I left out the preMain for space purposes but will send full script if needed)

///Start of 1st Formula

function main(S1K, S1KSmooth, S1D, S1FastColor, S1SlowColor,Multi,AdjustmentU,AdjustmentD,vDegrees ,vDegrFontSize,vDegrTextOffset,vDegrTopOffset) {
var myVar1;
var myVar1_1;
var sDisplayPrice1;

if ( bInit == false ) {

myStudy1 = stochK( S1K, S1KSmooth, S1D );

bInit = true;

}
setBarFgColor(S1FastColor, 0); //(0,238,0), 0);//lime
setBarFgColor(S1SlowColor, 1); //(0,238,0), 0);//lime

//retrieve the current values
myVar1 = myStudy1.getValue(0);
myVar1_1 = myStudy1.getValue(-1);

var Slope1 = ((myVar1/myVar1_1)-1)* Multi;

if(myVar1==null||myVar1_1==null) return;

var adjustedmyVar1 = myVar1+AdjustmentU;

var angle1 = (Math.atan(Slope1) / (Math.PI/180 ));

var FinalDegrees1 = (angle1 );

sDisplayPrice1 = Math.round(FinalDegrees1);

sDisplayPrice1 = Math.round((Math.atan(((myStudy1.getValue(0)/myStudy1.getValue(-1))-1)* Multi) / (Math.PI/180 )));

if ( vDegrees == true){
drawTextRelative(vDegrTextOffset,vDegrTopOffset, " " + sDisplayPrice1 + " deg_%K" , Color.black, null, Text.RELATIVETOTOP|Text.ONTOP|Text.FRAME|Text.BOLD ,"Arial",vDegrFontSize,"Degrees");
}

return new Array( myVar1, myVar2 );

}

///End of 1st Formula

///Start of 2d Formula

function main(S1K, S1KSmooth, S1D, S1FastColor, S1SlowColor,vDegrees,vDegrFontSize,vDegrTextOffset ,vDegrTopOffset,BarsforSlope,Multi) {

if ( bInit == false ) {

myStudy1 = stochK( S1K, S1KSmooth, S1D );
myStudy2 = stochD( S1K, S1KSmooth, S1D );

bInit = true;

}
setBarFgColor(S1FastColor, 0); //(0,238,0), 0);//lime
setBarFgColor(S1SlowColor, 1); //(0,238,0), 0);//lime
myVar1 = myStudy1.getValue(0);
myVar2 = myStudy2.getValue(0);
Slope1 = CheckSlope(myStudy1,BarsforSlope); // sending the CheckSlope function a series
angle1 = (Math.atan(Slope1)/(Math.PI/180 ));
FinalDegrees1 = (angle1);

sDisplayPrice1 = Math.round(FinalDegrees1*Multi);
vCursorDeg = " " + sDisplayPrice1;
vCursorSlope = " " + Math.round(Slope1*Multi);
if ( vDegrees == true){
drawTextRelative(vDegrTextOffset,vDegrTopOffset, " " + sDisplayPrice1 + " deg_%K", Color.black, null, Text.RELATIVETOTOP|Text.ONTOP|Text.FRAME|Text.BOLD ,"Arial",vDegrFontSize,"Degrees");
}

return new Array( myVar1, myVar2,vCursorDeg,vCursorSlope);
}

function CheckSlope(tmpX,NoOfBars){// CheckSlope function S. Hare 8 17 2006
var tmp = tmpX.getValue(-NoOfBars);
if (tmp == null || tmp == 0){
return null;
}
var time = rawtime(-NoOfBars)-rawtime(0);
if (time ==null || time == 0){ // if the check for zero is not made, there is a potential for over-run when dividing by this number
return null;
}
var slope = (tmp - tmpX.getValue(0))/time; // time base seconds, therefore the slope is price change per second
return slope;
}

///End of 2d Formula

[Doji3333]

which version of esignal are you using??

I'll have to look up a few things and try to get back to you. Have not worked with slopes and angles in a while :P

In structure, your code appears correct. Your use of the functions/formulas that calculate the slopes/angles may be incorrect or something.

Let me play with these examples over the next few days. Alex may also have some good examples of this.

What types of defaults are you using for your main parameters?

[waynecd]

Thanks for the reply Doji3333.

I attached the EFS with some further modifications and it seems much closer to working.

Apart from an accurate output for slope and degrees of slope, it causes eSignal to crash when I set the interval to tick such as 512T.

Thank you very much.