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  1. PO
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    <p>you can use <a href="http://docs.python.org/2/library/functions.html#map" rel="nofollow">map</a></p> <p>to do so, simply change connection to accept a circle as its parameter, and have the <code>r</code> as part of the circle</p> <pre><code>def connection(circle): n, m, r = circle is_connected = ((x[n]-x[m])**2 + (y[n]-y[m])**2)**0.5 if is_connected &lt; 2*r: return n + " " + "connects with" + " " + m else: return "no connection" </code></pre> <p>and have your list be a list of circles AND their radius.</p> <pre><code>circles = array([ [ 0.31730234, 0.73662906, r], [ 0.54488759, 0.09462212, r], [ 0.07500703, 0.36148366, r], [ 0.33200281, 0.04550565, r], [ 0.3420866 , 0.9425797 , r], [ 0.36115391, 0.16670599, r], [ 0.95586938, 0.52599398, r], [ 0.13707665, 0.6574444 , r], [ 0.77766138, 0.56875582, r], [ 0.79618595, 0.7139309 , r]]) </code></pre> <p>then simply do this:</p> <pre><code>map(connection, circles) </code></pre> <p>if the r is external, or a member then you want to use this:</p> <pre><code>def connection(coord): n, m = coord is_connected = ((x[n]-x[m])**2 + (y[n]-y[m])**2)**0.5 if is_connected &lt; 2*r: return n + " " + "connects with" + " " + m else: return "no connection" coords = array([ [ 0.31730234, 0.73662906], [ 0.54488759, 0.09462212], [ 0.07500703, 0.36148366], [ 0.33200281, 0.04550565], [ 0.3420866 , 0.9425797 ], [ 0.36115391, 0.16670599], [ 0.95586938, 0.52599398], [ 0.13707665, 0.6574444 ], [ 0.77766138, 0.56875582], [ 0.79618595, 0.7139309 ]]) map(connection, coords) </code></pre> <p>or you can keep your current format, and do a slightly uglier implementation. and i still dont know where you get the <code>r</code> from.</p> <pre><code>for item in circles: connection(item[0], item[1], r) </code></pre>
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    1. POCreate a loop that runs function (with parameters which are indices of data set) on all items of the data set?
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    1. USInbar Rose
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    1. COThank you for your help! When I try running the code, it gives me an issue with my formatting of the -if segment? In other words, it says I can't add strings and variables? Is that true, or is my interpreter acting up?
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    2. COAlso, n and m aren't the x and y coordinates in the circle - they are actually indices that correspond to two different circles. Sorry for being unclear.
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    3. CO@Amanc without seeing the actual error, stacktrace, i can't tell you the actual problem. but you can never add a string to a non-string.
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