Finding Min, Max stochastic values

[shaeffer]

I want to use the minimum stochastic value in the last 20 bars in an efs. Is there such a function as
Min(stochK(14,6,3), 20) or an equivalent?

After a search I found a highest() function, and a Math.max() function, but they seem to apply to price bars. I'm hoping there may be an existing efs with a Min(Study) function I could use as a guideline.

Thanks
shaeffer

[eSignal_JasonK]

Hello shaeffer,

There isn't a single function that will retrieve this value for you. Alexis posted a function library solution for a similar request that you could use to accomplish your task in this post. You would just pass in 20 for the length and your Stochastic series for the source instead of 50 and high() as in the example. Duplicate the highestBarNdx() library function to retrieve the lowest value. The only difference would be to replace the Math.max with Math.min.

[eSignal_JasonK]

Hello shaeffer,

After reviewing my reply I realized that I completely misinterpreted what you were asking for. My apologies. You were on the right track with the highest() function. You just need to pass the stochK series as the source to the function. Please try the following.

var bInit = false;
var xStochK = null;
var xHighStochK = null;

function main() {
    if (bInit == false) {
        xStochK = stochK(14, 1, 3);
        xHighStochK = highest(20, xStochK);
        bInit = true;
    }

    return xHighStochK.getValue(0);
} 

[shaeffer]

Hi Jason,

Thanks for the reply. I didn't get to this efs yet.... I spent a huge part of the weekend trying to understand the high-low.efs.

In that efs there were the same bInit true/false lines. Why are they needed? Referring to your reply, why not just include, after main()

var xStochK = stochK(14, 1, 3) 

Thanks
shaeffer

[eSignal_JasonK]

Hello shaeffer,

The bInit routine is not required actually. Its just a more efficient way to use a series. You certainly can just initialize the series inside main() as in your example. The code gets executed on every execution of main(), which isn't necessary. The EFS2 engine doesn't actually reinitialize the series on every execution, however. It recognizes that a series with the same parameters has already been established and will just reference the existing series. Prior to EFS2 and version 7.9 we could not do it this way because the EFS1 engine would continue to make duplicate instances of the series on each execution of main(), which put a drain on memory. This behavior of the EFS2 engine is one of the major enhancements to the formula environment. Using a bInit routine is just a recommended practice to further enhance programming efficiency.