check 30 min bar open

[Jeff-b]

I have managed to confuse myself, and my be making this more difficult than it has to be. I have a 5 min chart. I need to compare the sessions first 30 min high/lows with each subsequent 30 min bar high/low. Is there an easy way to do this? I started out using:

vH= myLib_dsgetMaxValueAtRange("07:30", "8:00", 0, high(inv(30))

but in my thinking I would need to setup that line for each of the 14 bars. There must be a bettrer way. Any ideas?

[eSignal_JasonK]

Hell Jeff-b,

I'm not completely sure what you're trying to accomplish, but the easiest way to refer to the higher time frame interval is by simply basing a high() and low() series on the 30 min interval with inv(). This functionality automatically synchronizes the 5 min bar with the corresponding 30 min bar, so there is no need to handle this with custom coding that looks a bar times specifically.

Here's a basic example. Hope this helps.

function preMain() {
    setPriceStudy(true);
    setStudyTitle("example");
    setCursorLabelName("high30", 0);
    setCursorLabelName("low30", 1);
}

var xHigh = null;
var xLow = null;

function main() {
    if (xHigh == null) xHigh = high(inv(30));
    if (xLow == null) xLow = low(inv(30));
    
    // Use the nH30 and nL30 vars for conditional statements and/or alerts
    var nH30 = xHigh.getValue(0);
    var nL30 = xLow.getValue(0);
    if (nH30 == null || nL30 == null) return;

    return new Array(getSeries(xHigh), getSeries(xLow));
}