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POPlotting a visualization of different categories of observation in R
 

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  1. POPlotting a visualization of different categories of observation in R
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    <p>Using R, I want to plot a map of several observations (where an observation is a particular vehicle given by its registration plate) of speeding over defined distances along several different roads. I also want to color code the observations according to how much above the speed limit a vehicle traveled (red- +30mph, yellow- 20-30mph, blue- 0-20mph).</p> <p><strong>INPUT</strong></p> <ol> <li>For each vehicle: <ul> <li>the road on which it was found speeding </li> <li>the locations (start and end) for the given road along which it was speeding (can be multiple times on one road) </li> <li>the category of speeding (red, yellow or blue as above).</li> </ul></li> <li>For each road <ul> <li>the distance of the road. </li> </ul></li> </ol> <p>Data</p> <pre><code>$Vehicle1 Road Start End 1 157398137 166811234 1 216984017 238298694 1 238298694 247249719 2 0 8794530 2 8794530 26703134 2 59852594 73085123 2 206737339 218577503 2 218695178 231142027 3 96301465 115456078 3 116345621 126898764 $Vehicle2 Road Start End 1 157398137 166811234 1 216984017 238298694 1 238298694 247249719 2 0 8794530 2 8794530 26703134 2 59852594 73085123 2 206737339 218577503 3 3469683 56797911 3 96301465 115456078 3 116345621 126898764 $Vehicle3 Road Start End 1 157398137 166811234 1 216984017 238298694 1 238298694 247249719 2 0 8794530 2 8794530 26703134 2 59852594 73085123 2 206737339 218577503 2 218695178 231142027 2 231142027 241946296 3 3469683 56797911 3 96301465 115456078 3 116345621 126898764 Road Length 1 529290651 2 249139323 3 298024420 </code></pre> <p><strong>EXPECTED OUTPUT</strong></p> <p><img src="https://i.stack.imgur.com/lPujM.png" alt="enter image description here"></p>
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    1. COThis looks like a job that ggplot2 qith `geom_segment` could handle but without data this is tough to help. Have a look at this answer. The color can be added with the fill argument: http://stackoverflow.com/a/9862712/1000343
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      1. USTyler Rinker
    2. COI've added some data.
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      1. USKaleb
 

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