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POif dependant calculation in csv and replace values within main csv
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  1. POif dependant calculation in csv and replace values within main csv
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    copied!<p>I have 3 csvs, two contains lists of "classes" and the other contains my main dataset, what I need my code to do is perform one calulation if the data in column 2 appears in list csv 1, but do a different calculation if the data in column 2 appears in list csv 2 and overwrite a value in the main csv column 12: </p> <p>Lets assume list csv 1 contains the following:</p> <pre><code>classA </code></pre> <p>and list csv 2</p> <pre><code>classB classC </code></pre> <p>and my main data list contains the following: </p> <pre><code>X,classA,uniqueclassindicator1,x,x,3,x,x,x,x,125,21.8,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x X,classA,uniqueclassindicator1,x,x,3,x,x,x,x,125,21.8,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x X,classA,uniqueclassindicator1,x,x,3,x,x,x,x,125,21.8,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x X,classB,uniqueclassindicator2,x,x,4,x,x,x,x,125,21.8,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x X,classB,uniqueclassindicator2,x,x,4,x,x,x,x,125,21.8,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x X,classB,uniqueclassindicator2,x,x,4,x,x,x,x,125,21.8,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x X,classB,uniqueclassindicator2,x,x,4,x,x,x,x,125,21.8,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x X,classA,uniqueclassindicator3,x,x,4,x,x,x,x,125,21.8,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x X,classA,uniqueclassindicator3,x,x,4,x,x,x,x,125,21.8,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x X,classA,uniqueclassindicator3,x,x,4,x,x,x,x,125,21.8,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x X,classA,uniqueclassindicator3,x,x,4,x,x,x,x,125,21.8,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x X,classC,uniqueclassindicator4,x,x,6,x,x,x,x,125,21.8,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x X,classC,uniqueclassindicator4,x,x,6,x,x,x,x,125,21.8,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x X,classC,uniqueclassindicator4,x,x,6,x,x,x,x,125,21.8,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x X,classC,uniqueclassindicator4,x,x,6,x,x,x,x,125,21.8,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x X,classC,uniqueclassindicator4,x,x,6,x,x,x,x,125,21.8,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x X,classC,uniqueclassindicator4,x,x,6,x,x,x,x,125,21.8,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x X,classA,uniqueclassindicator5,x,x,6,x,x,x,x,125,21.8,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x X,classA,uniqueclassindicator5,x,x,6,x,x,x,x,125,21.8,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x X,classA,uniqueclassindicator5,x,x,6,x,x,x,x,125,21.8,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x X,classA,uniqueclassindicator5,x,x,6,x,x,x,x,125,21.8,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x X,classA,uniqueclassindicator5,x,x,6,x,x,x,x,125,21.8,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x X,classA,uniqueclassindicator5,x,x,6,x,x,x,x,125,21.8,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x </code></pre> <p>What I want to do is the following: If column 2 of main dataset is in csv list 1 then multiply column 6 by column 11 and replace the value in column 12. However if the text in column 2 of main of main dataset is in csv list 2 then divide column 6 by column 11 and replace the value in column 12. I have to perform this manipulation on about 700k rows of data (so efficiency is of high importance), and obviously the list 1 &amp; 2 are much larger than just 1/2 pieces of data. If I can get a piece code that can perform this function then I will be using the method rather alot.</p> <p>So what i need said code to return is the following: </p> <pre><code>x,classA,uniqueclassindicator1,x,x,3,x,x,x,x,125,375,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x x,classA,uniqueclassindicator1,x,x,3,x,x,x,x,125,375,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x x,classA,uniqueclassindicator1,x,x,3,x,x,x,x,125,375,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x x,classB,uniqueclassindicator2,x,x,4,x,x,x,x,125,0.032,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x x,classB,uniqueclassindicator2,x,x,4,x,x,x,x,125,0.032,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x x,classB,uniqueclassindicator2,x,x,4,x,x,x,x,125,0.032,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x x,classB,uniqueclassindicator2,x,x,4,x,x,x,x,125,0.032,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x x,classA,uniqueclassindicator3,x,x,4,x,x,x,x,125,500,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x x,classA,uniqueclassindicator3,x,x,4,x,x,x,x,125,500,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x x,classA,uniqueclassindicator3,x,x,4,x,x,x,x,125,500,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x x,classA,uniqueclassindicator3,x,x,4,x,x,x,x,125,500,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x x,classC,uniqueclassindicator4,x,x,6,x,x,x,x,125,0.048,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x x,classC,uniqueclassindicator4,x,x,6,x,x,x,x,125,0.048,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x x,classC,uniqueclassindicator4,x,x,6,x,x,x,x,125,0.048,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x x,classC,uniqueclassindicator4,x,x,6,x,x,x,x,125,0.048,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x x,classC,uniqueclassindicator4,x,x,6,x,x,x,x,125,0.048,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x x,classC,uniqueclassindicator4,x,x,6,x,x,x,x,125,0.048,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x x,classA,uniqueclassindicator5,x,x,6,x,x,x,x,125,750,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x x,classA,uniqueclassindicator5,x,x,6,x,x,x,x,125,750,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x x,classA,uniqueclassindicator5,x,x,6,x,x,x,x,125,750,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x x,classA,uniqueclassindicator5,x,x,6,x,x,x,x,125,750,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x x,classA,uniqueclassindicator5,x,x,6,x,x,x,x,125,750,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x x,classA,uniqueclassindicator5,x,x,6,x,x,x,x,125,750,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x </code></pre> <p>Many thanks in advance SMNALLY</p>
 

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