Plotting Alerts on charts

[mbuta]

Is there an example somewhere of plotting Alerts on charts?

For example:

...
if (...) {Plot a red diamond at the top of current bar}
else if (...) {Plot a green diamond at the bottom of current bar}
...

Thanks.

[eSignal_JasonK]

Hello mbuta,

You can find examples in the thread below for drawing shapes.
Drawing Images, Shapes, and Text with EFS

[mbuta]

Drawing Shapes, Images

Thank you Jason, I tried (manually and with Wizard) but did not work.
Besides, I am confused with shape.XXXX (not documenbted anywhere) and setBarImage (documented in the General Formula Refrence).


Can you please send the simplest exapmle of an efs file that draws a Red diamond at the top of the current bar if (you choose the condition - I am looking for pivots actually).

Thank you.
Mihai

[eSignal_JasonK]

Hello Mihai,

Here is a basic formula that has examples of all the draw functions for lines, shapes and images. setBarImage() is actual no longer active, we'll remove that form the general reference guide.

var study = new MAStudy(10, 0, "Close", MAStudy.SIMPLE);

function preMain() {
    setPriceStudy(true);
}

var vHigh;
var vLow;
var BarCntr = 0;
function main() {
    var v = study.getValue(MAStudy.MA);

    if(v == null)
        return;

    if (getBarState() == BARSTATE_NEWBAR) 
        BarCntr +=1;
    
    vHigh = high();
    vLow = low();
    for (i = 0; i < 20; ++i) {
        vHigh = Math.max(high(-i), vHigh);
        vLow = Math.min(low(-i), vLow);
    }

    drawLineRelative(-20, vHigh, 0, vHigh, PS_SOLID, 2, Color.red, "High");
    drawLineRelative(-20, vLow, 0, vLow, PS_SOLID, 2, Color.green, "Low");

    var space = 1;
    if (getInterval() != "D")
        space = high() - low();
    
    if(close() >= v) {
        if(!Strategy.isLong()) {
            drawShapeRelative(0, low() - space, Shape.UPARROW, null, Color.lime, Image.ONTOP, "Buy" + BarCntr);
            drawTextRelative(0, low() - (space * 1.75), "B", Color.black, Color.lime, Text.FRAME | Text.ONTOP | Text.BOLD, null, 9, "text buy" + BarCntr );
            drawImageRelative(0, low() - (space * 3), "SystemHappyFace", null, Image.ONTOP, "buy image" + BarCntr);
            Strategy.doLong("Crossing Up", Strategy.MARKET, Strategy.THISBAR);
        }
    } else if(!Strategy.isShort()) {
        drawShapeRelative(0, high() + space, Shape.DOWNARROW, null, Color.yellow, Image.ONTOP, "Sell" + BarCntr);
        drawTextRelative(0, high() + (space * 1.75), "S", Color.black, Color.red, Text.FRAME | Text.BOTTOM | Text.BOLD, null, 9, "text sell" + BarCntr );
        drawImageRelative(0, high() + (space * 3), "SystemHappyFace", null, Image.BOTTOM, "short image" + BarCntr);
        Strategy.doShort("Crossing Down", Strategy.MARKET, Strategy.THISBAR);
    }

    return v;
} 

[mbuta]

Re: Reply to post 'Plotting Alerts on charts'

Thank you Jason, I will try it
Note: It sure looks much more complicated than I hoped.
Maybe someone takes a look at hoe TradeStation does, it is so simple there
(they ofer special constructs for this, and others).
Mihai

----- Original Message -----
From: <[email protected]>
To: <[email protected]>
Sent: Thursday, February 06, 2003 2:44 PM
Subject: Reply to post 'Plotting Alerts on charts'


> Hello mbuta,
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>