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POJavascript. Tricky: Are all array values consistent? (ie: does a = [a,a,a,a]) for any size array
 

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  1. POJavascript. Tricky: Are all array values consistent? (ie: does a = [a,a,a,a]) for any size array
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    <p>This is rather conceptual, and I'm hoping someone can help. I have a script, that when you insert coordinates (x,y, from 0 -> 800) in to it, it'll return lists of pre-plotted coordinates that are within 3 separate ranges.</p> <p>ie: I enter 200,200. I receive a list for each of the following: Plots that are within a radius of 25, a radius of 60, a radius of 150.</p> <p>The code if you're curious / for context: </p> <pre><code> display(coords[n][1] + ", " + coords[n][2]); if(n==0){ for(var i=0; i &lt; data.length; i++) { var xs = 0; var xy = 0; xs = xPlot - data[i][0]; ys = yPlot - data[i][1]; xs = xs * xs; ys = ys * ys; distance = Math.sqrt(xs + ys); if (distance &lt;= 25){ display2(data[i][0] + ", " + data[i][1] + " - " + alliance); } else if(distance &lt;= 60){ display3(data[i][0] + ", " + data[i][1] + " - " + alliance); } else if(distance &lt;= 150){ display4(data[i][0] + ", " + data[i][1] + " - " + alliance); } } </code></pre> <p>Easy enough.</p> <p>Now, when I input another set of coordinates another multidimensional array is created, I want to check for intersecting points within the two (well, 6) circles.</p> <p>I thought of using an array for my checking. If 2 coords are entered, and a point is found within both inner (green) circles, a = [g,g]. If a point is found within an inner of one, but a mid (blue) of the other, set a = [g,b] You get the idea. Red being the outer circle.</p> <p>When 3 coords are entered things get trickier. Let's say a point is within two inners, and one mid. Then a = [g,g,b]. The purpose of the 3 lists, is to organize the returned values in groups of best to worst. So in an example with 4 inputs, the lists are to be organised in the following way:</p> <p>List 1 / List 2 / List 3 <br/> gggg / gggb / bbbr <br/> ------- / ggbb / bbrr <br/> ------- / gbbb / brrr <br/> ------- / bbbb / rrrr</p> <p>How would I build check my array in a scalable way so if I had 5 inputs, I'd be able to place my results in the appropriate columns? </p> <p>I've started with this sofar:</p> <pre><code>else if(n&gt;0){ for(var i=0; i &lt; data.length; i++) { for(var j=0; j &lt; coords.length; j++) { var xs = 0; var ys = 0; xs = coords[j][1] - data[i][0]; ys = coords[j][2] - data[i][1]; xs = xs * xs; ys = ys * ys; distance = Math.sqrt(xs + ys); if (distance &lt;= 25){ a[j] = [,[g]]; } else if (distance &lt;= 60){ a[j] = [,[b]]; } else if (distance &lt;= 150){ a[j] = [,[r]]; } } if($.inArray('g', a) &amp;&amp; (!($.inArray('b', a)))){ display2(data[i][0] + ", " + data[i][1] + " - " + alliance); </code></pre> <p>}</p> <p>Would this last line execute if a contained g, but NOT b?? (jquery) Am I on the right track?</p>
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    1. COSeems like some of [this guy's repos](https://github.com/kriskowal) might be useful, especially es5-shim and Montage Collections. I'm sure somebody out there has an array.intersect.
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      1. USJared Farrish
 

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