low volume alarm per bar

[jand1]

I have found many efs studies that will alert (audible) when a bar with a threshold of volume is hit.. I am trying to rewrite it to alarm when volume 10 secs before end of 1 minute bar is below a certain level.. can anyone help.. I changed the symbols.. from greater than to less than .. but now alarm goes off on everybar ..
thanks
Jay

[Doji3333]

please post an example of your code so we can help.

[jand1]

Thanks for the help

Thank you so much for noticing my post.. I do not care about bar color at all.. and I want to keep it really simple, so I don't even care about the ten seconds before the bar closes. I just want an audible alert at the end of a bar interval.. whether 1 minute or 5 minute etc. Teh alert would only sound if volume was below a threshold i.e... dwo jones one minute chart.. volume of last bar was below 200 contracts.. then soudn audible alarm.. if contracts were 201 then no sound!.. I would like the "low threshold" to be adjustable in the editor formula params.. Thank You

currently this formula sounds at the beginning of verybar becaseu the voluem is alwasy belwo the threshold at the beginnign of a bar. I need to add something that says look back at the previous bar volume.

I would also liek the color bar.. deleted from teh formula. thank you so much for yoru time and energy.. the reason for this formula is lthat i like to trade when there is extremely low volume.


/************************************************** *******
Alexis C. Montenegro © May 2003
Use and/or modify this code freely. If you redistribute it
please include this and/or any other comment blocks and a
description of any changes you make.
************************************************** ********/

var nLastRawTime1;
var nLastRawTime2;

function preMain() {

setPriceStudy(false);
setStudyTitle("VolumeMA");
setCursorLabelName("Vol", 0);
setCursorLabelName("maVol", 1);
setDefaultBarStyle(PS_SOLID, 0);
setDefaultBarStyle(PS_SOLID, 1);
setDefaultBarFgColor(Color.black, 0);
setDefaultBarFgColor(Color.black, 1);
setDefaultBarThickness(1, 0);
setDefaultBarThickness(1, 1);
setPlotType(PLOTTYPE_HISTOGRAM, 0);
setPlotType(PLOTTYPE_LINE, 1);
setColorPriceBars(false);


var fp1 = new FunctionParameter("MALength", FunctionParameter.NUMBER);
fp1.setLowerLimit(1);
fp1.setDefault(30);//Edit this value to set a new default

var fp2 = new FunctionParameter("Threshold", FunctionParameter.NUMBER);
fp2.setDefault(2000);//Edit this value to set a new default

var fp3 = new FunctionParameter("Source", FunctionParameter.STRING);
fp3.addOption("Price");
fp3.addOption("Volume");
fp3.setDefault("Volume"); //Edit this value to set a new default

}

function main(MALength,Threshold,Source) {

var nLength = MALength;
var i;
var vSum = 0.0;
var vValue;

vValue = volume(0, -nLength);

if(vValue == null) {
return;
}

for(i = 0; i < nLength; i++) {
vSum += vValue[i];
}
var MAofVol = Math.round(vSum/nLength);

if(Source=="Price"){
if (close() < close(-1))
setBarFgColor(Color.RGB(255,0,0));
else if (close() > close(-1))
setBarFgColor(Color.RGB(0,0,255));
else if (close() == close(-1))
setBarFgColor(Color.RGB(0,0,0));
}
if(Source=="Volume"){
if (volume() < volume(-1))
setBarFgColor(Color.RGB(255,0,0));
else if (volume() > volume(-1))
setBarFgColor(Color.RGB(0,0,255));
else if (volume() == volume(-1))
setBarFgColor(Color.RGB(0,0,0));
}


if (getValue("rawtime",0) != nLastRawTime1) {
if(volume()>MAofVol){
Alert.playSound("ding.wav");
Alert.addToList(getSymbol()+" "+getInterval(),"Volume Alert 1",Color.black,Color.blue);
nLastRawTime1 = getValue("rawtime",0);
}
}
if (getValue("rawtime",0) != nLastRawTime2) {
if(volume()<Threshold){
Alert.playSound("buzz.wav");
Alert.addToList(getSymbol()+" "+getInterval(),"Volume Alert 2",Color.black,Color.red);
nLastRawTime2 = getValue("rawtime",0);
}
}

return new Array (volume(),MAofVol);

}

[Doji3333]

I believe all you need to do is change the volume() in your conditions to volume(-1) - this checks the previous bar..

When you use..

if (getValue("rawtime",0) != nLastRawTime2) {

This checks the instance of a new bar on the chart (in RT or historical). This means, A NEW BAR (which has an index of 0) is available. So you need to check bar -1 for your condition.

I've changed your code below.

/ **************************************************
*******
Alexis C. Montenegro © May 2003 
Use and/or modify this code freely. If you redistribute it
please include this and/or any other comment blocks and a 
description of any changes you make. 
**************************************************
********/

var nLastRawTime1; 
var nLastRawTime2;

function preMain() {

setPriceStudy(false);
setStudyTitle("VolumeMA");
setCursorLabelName("Vol", 0);
setCursorLabelName("maVol", 1);
setDefaultBarStyle(PS_SOLID, 0);
setDefaultBarStyle(PS_SOLID, 1);
setDefaultBarFgColor(Color.black, 0);
setDefaultBarFgColor(Color.black, 1);
setDefaultBarThickness(1, 0);
setDefaultBarThickness(1, 1);
setPlotType(PLOTTYPE_HISTOGRAM, 0);
setPlotType(PLOTTYPE_LINE, 1);
setColorPriceBars(false);


var fp1 = new FunctionParameter("MALength", FunctionParameter.NUMBER);
fp1.setLowerLimit(1); 
fp1.setDefault(30);//Edit this value to set a new default

var fp2 = new FunctionParameter("Threshold", FunctionParameter.NUMBER); 
fp2.setDefault(2000);//Edit this value to set a new default

var fp3 = new FunctionParameter("Source", FunctionParameter.STRING);
fp3.addOption("Price"); 
fp3.addOption("Volume");
fp3.setDefault("Volume"); //Edit this value to set a new default

}

function main(MALength,Threshold,Source) {

var nLength = MALength;
var i;
var vSum = 0.0;
var vValue;

vValue = volume(0, -nLength);

if(vValue == null) {
return;
}

for(i = 0; i < nLength; i++) {
vSum += vValue[i];
}
var MAofVol = Math.round(vSum/nLength);

if(Source=="Price"){
if (close() < close(-1))
setBarFgColor(Color.RGB(255,0,0));
else if (close() > close(-1))
setBarFgColor(Color.RGB(0,0,255));
else if (close() == close(-1))
setBarFgColor(Color.RGB(0,0,0)); 
}
if(Source=="Volume"){
if (volume() < volume(-1))
setBarFgColor(Color.RGB(255,0,0));
else if (volume() > volume(-1))
setBarFgColor(Color.RGB(0,0,255));
else if (volume() == volume(-1))
setBarFgColor(Color.RGB(0,0,0));
} 


if (getValue("rawtime",0) != nLastRawTime1) { 
if(volume(-1)>MAofVol){ 
Alert.playSound("ding.wav");
Alert.addToList(getSymbol()+" "+getInterval(),"Volume Alert 1",Color.black,Color.blue);
nLastRawTime1 = getValue("rawtime",0);
}
}
if (getValue("rawtime",0) != nLastRawTime2) { 
if(volume(-1)<Threshold){
Alert.playSound("buzz.wav");
Alert.addToList(getSymbol()+" "+getInterval(),"Volume Alert 2",Color.black,Color.red);
nLastRawTime2 = getValue("rawtime",0);
}
}

return new Array (volume(),MAofVol);

}