line 0: null is not a function

[sun0781]

Hi,
I'm trying to write a new study but getting this error while adding to the chart.
line 0: null is not a function

Call:
function main(gNbrLength, gColorFlat,gColorUp, gColorDn)
{
if(!bMainInit)
{
xK = 1.0/gNbrLength;
xSrc = close();
xPdm = efsInternal("xPdm",xSrc);
}

Function:
function xPdm(xSrc) {
return Math.max((xSrc.getValue(0) - xSrc.getValue(-1)), 0);
}

[eSignal_AveryH]

Thank you for posting on the eSignal Forums. Unfortunately for us to be able to assist you you need to provide more information as to your error message. This tidbit of code just is not enough to find out what the issue is.

Thank you

eSignal Support

[sun0781]

Here's more code from the study:



var fpArray = new Array();
function preMain()
{
setPlotType(PLOTTYPE_INSTANTCOLORLINE);
setPriceStudy(true);
setStudyTitle("VMA");
setCursorLabelName("VMA", 0);
setDefaultBarThickness(2, 0);

var x=0;
fpArray[x] = new FunctionParameter("gNbrLength", FunctionParameter.NUMBER);
with(fpArray[x++])
{
setName("Number of Length");
setLowerLimit(1);
setDefault(10);
}
fpArray[x] = new FunctionParameter("gColorUp", FunctionParameter.COLOR);
with(fpArray[x++])
{
setName("Up Color");
setDefault(Color.lime);
}
fpArray[x] = new FunctionParameter("gColorDn", FunctionParameter.COLOR);
with (fpArray[x++])
{
setName("Down Color");
setDefault(Color.red);
}
fpArray[x] = new FunctionParameter("gColorFlat", FunctionParameter.COLOR);
with (fpArray[x++])
{
setName("Flat Color");
setDefault(Color.blue);
}
}

var bMainInit = false;
var xSrc = null;
var xK = null;
var xPdm = null;
var xMdm = null;
var xPdms = null;
var xMdms = null;
var xS = null;
var xPdi = null;
var xMdi = null;
var xPdiS = null;
var xMdiS = null;
var xD = null;
var xS1 = null;
var xIS = null;
var xHhv = null;
var xLlv = null;
var xD1 = null;
var xVi = null;
var xVMA = null;

function main(gNbrLength, gColorFlat,gColorUp, gColorDn)
{
if(!bMainInit)
{
xK = 1.0/gNbrLength;
xSrc = close();
xPdm = efsInternal("xPdm",xSrc);
/*xMdm = efsInternal("xMdm",xSrc);
xPdms = efsInternal("xPdms",xK, xPdms, xPdm);
xMdms = efsInternal("xMdms",xK, xMdms, xMdm);
xS = efsInternal("xS",xPdms, xMdms);
xPdi = efsInternal("xPdi",xPdms, xS);
xMdi = efsInternal("xMdi",xMdms, xS);
xPdiS = efsInternal("xPdiS",xK, xPdiS, xPdi);
xMdiS = efsInternal("xMdiS",xK, xMdiS, xMdi);
xD = efsInternal("xD",xPdiS, xMdiS);
xS1 = efsInternal("xS1",xPdiS, xMdiS);
xIS = efsInternal("xIS",xK, xIS, xD, xS1);
xHhv = efsInternal("xHhv",xIS, gNbrLength);
xLlv = efsInternal("xLlv",xIS, gNbrLength);
xD1 = efsInternal("xD1",xHhv, xLlv);
xVi = efsInternal("xVi",xIS, xLlv, xD1);
xVMA = efsInternal("xVMA",xK, xVi, xVMA, xSrc);
*/
bMainInit = true;

}

return xSrc.getValue(-1);
}

function xVMA(xK, xVi, xVMA, xSrc)
{
return ((1 - xK.getValue(0)*xVi.getValue(0)) * xVMA.getValue(-1) + xK.getValue(0)*xVi.getValue(0) * xSrc.getValue(0));
}

function xPdm(xSrc)
{
return Math.max((xSrc.getValue(0) - xSrc.getValue(-1)), 0);
}

[ACM]

sun0781

You are using the same name (i.e. xPdm and also all the other similarly named variables and functions) ) as a variable and function

Replace the function name with for example xPDM and you will no longer get an error

Alex

P.S For future reference and as a courtesy towards others who may try to help you please post formatted code (ie in PHP tags)

Here's more code from the study:



var fpArray = new Array();
function preMain()
{
setPlotType(PLOTTYPE_INSTANTCOLORLINE);
setPriceStudy(true);
setStudyTitle("VMA");
setCursorLabelName("VMA", 0);
setDefaultBarThickness(2, 0);

var x=0;
fpArray[x] = new FunctionParameter("gNbrLength", FunctionParameter.NUMBER);
with(fpArray[x++])
{
setName("Number of Length");
setLowerLimit(1);
setDefault(10);
}
fpArray[x] = new FunctionParameter("gColorUp", FunctionParameter.COLOR);
with(fpArray[x++])
{
setName("Up Color");
setDefault(Color.lime);
}
fpArray[x] = new FunctionParameter("gColorDn", FunctionParameter.COLOR);
with (fpArray[x++])
{
setName("Down Color");
setDefault(Color.red);
}
fpArray[x] = new FunctionParameter("gColorFlat", FunctionParameter.COLOR);
with (fpArray[x++])
{
setName("Flat Color");
setDefault(Color.blue);
}
}

var bMainInit = false;
var xSrc = null;
var xK = null;
var xPdm = null;
var xMdm = null;
var xPdms = null;
var xMdms = null;
var xS = null;
var xPdi = null;
var xMdi = null;
var xPdiS = null;
var xMdiS = null;
var xD = null;
var xS1 = null;
var xIS = null;
var xHhv = null;
var xLlv = null;
var xD1 = null;
var xVi = null;
var xVMA = null;

function main(gNbrLength, gColorFlat,gColorUp, gColorDn)
{
if(!bMainInit)
{
xK = 1.0/gNbrLength;
xSrc = close();
xPdm = efsInternal("xPdm",xSrc);
/*xMdm = efsInternal("xMdm",xSrc);
xPdms = efsInternal("xPdms",xK, xPdms, xPdm);
xMdms = efsInternal("xMdms",xK, xMdms, xMdm);
xS = efsInternal("xS",xPdms, xMdms);
xPdi = efsInternal("xPdi",xPdms, xS);
xMdi = efsInternal("xMdi",xMdms, xS);
xPdiS = efsInternal("xPdiS",xK, xPdiS, xPdi);
xMdiS = efsInternal("xMdiS",xK, xMdiS, xMdi);
xD = efsInternal("xD",xPdiS, xMdiS);
xS1 = efsInternal("xS1",xPdiS, xMdiS);
xIS = efsInternal("xIS",xK, xIS, xD, xS1);
xHhv = efsInternal("xHhv",xIS, gNbrLength);
xLlv = efsInternal("xLlv",xIS, gNbrLength);
xD1 = efsInternal("xD1",xHhv, xLlv);
xVi = efsInternal("xVi",xIS, xLlv, xD1);
xVMA = efsInternal("xVMA",xK, xVi, xVMA, xSrc);
*/
bMainInit = true;

}

return xSrc.getValue(-1);
}

function xVMA(xK, xVi, xVMA, xSrc)
{
return ((1 - xK.getValue(0)*xVi.getValue(0)) * xVMA.getValue(-1) + xK.getValue(0)*xVi.getValue(0) * xSrc.getValue(0));
}

function xPdm(xSrc)
{
return Math.max((xSrc.getValue(0) - xSrc.getValue(-1)), 0);
}

[sun0781]

Thanks, ACM, it fixed the issue.

[ACM]

sun0781
You are welcome
Alex

Thanks, ACM, it fixed the issue.