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POggplot2 + Date structure using scale X
 

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    <p>I really need help here because I am way beyond lost.</p> <p>I am trying to create a line chart showing several teams' performance over a year. I divided the year into quarters: 1/1/2012, 4/1/12. 8/1/12. 12/1/12 and loaded the csv data frame into R. </p> <pre><code> Month Team Position 1 1/1/12 South Africa 56 2 1/1/12 Angola 85 3 1/1/12 Morocco 61 4 1/1/12 Cape Verde Islands 58 5 4/1/12 South Africa 71 6 4/1/12 Angola 78 7 4/1/12 Morocco 62 8 4/1/12 Cape Verde Islands 76 9 8/1/12 South Africa 67 10 8/1/12 Angola 85 11 8/1/12 Morocco 68 12 8/1/12 Cape Verde Islands 78 13 12/1/12 South Africa 87 14 12/1/12 Angola 84 15 12/1/12 Morocco 72 16 12/1/12 Cape Verde Islands 69 </code></pre> <p>When I try using ggplot2 to generate the graph the fourth quarter 12/1/12 inexplicably moves to the second spot. </p> <pre><code>ggplot(groupA, aes(x=Month, y=Position, colour=Team, group=Team)) + geom_line() </code></pre> <p>I then put this plot into a variable GA in order to try to use scale_x to format the date:</p> <pre><code>GA + scale_x_date(labels = date_format("%m/%d")) </code></pre> <p>But I keep getting this Error:</p> <pre><code>Error in structure(list(call = match.call(), aesthetics = aesthetics, : </code></pre> <p>could not find function "date_format"</p> <p>And if I run this code:</p> <pre><code>GA + scale_x_date() </code></pre> <p>I get this error:</p> <pre><code>Error: Invalid input: date_trans works with objects of class Date only </code></pre> <p>I am using a Mac OS X running R 2.15.2 </p> <p>Please help.</p>
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    1. COSorry. How do I do that?
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    2. CO@Syia and as a polite action you can upvote , specially when you accept the solution...This will encourage people to help you next time...
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      1. USagstudy
 

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