Databases
StackOverflow2013
Postsdbo
POCustomizing legend text and colors in ggplot2
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POCustomizing legend text and colors in ggplot2
    primarykey
    data
    text
    <p>I am trying to get a plot (using ggplot) that will plot <code>geom_point</code> and <code>geom_line</code> where different variables are plotted in different colors (according to <code>scale_colour_manual(value = color)</code> where <code>color</code> is a custom array of colors) in addition to two horizontal black lines (<code>geom_hline</code>).</p> <p>My trouble arises when I attempt to get the legend text for the horizontal lines customized. It appears that I can have only one of the two:</p> <ol> <li>the color of the horizontal line as black but the legend text for this line is incorrect</li> <li>the legend text for this line is correct but the color of the horizontal line is determined by the aforementioned <code>scale_colour_manual</code> color.</li> </ol> <p></p> <pre><code>plot &lt;- ggplot(data, aes(x = factor(Month), y = avgLoss, colour = type, order = -as.numeric(type))) + geom_line() + geom_point() meanplus2sd &lt;- mean(data$avgLoss) + 2*sd(data$avgLoss) plot &lt;- plot + geom_hline(aes(yintercept = meanplus2sd), colour = "black") </code></pre> <p>produces black line that says "black" in the legend</p> <pre><code>plot &lt;- plot + geom_hline(aes(yintercept = meanplus2sd, colour = "Mean + 2 Stdev.")) </code></pre> <p>produces a line that is the next color in my defined <code>scale_colour_manual</code> array, but the legend text is <code>"Mean + 2 Stdev."</code></p> <p>Any help in getting both custom color and legend text for a horizontal line in addition to the standard <code>geom_point + geom_line</code> plotting would be excellent. Thanks.</p>
    singulars
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
    1. USMarek
    1. USMarver
    plurals
    1. PL
      singulars
      1. LTLinked
    1. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POCustomizing legend text and colors in ggplot2
      1. USMarver
      1. VTFavorite
    2. VO
      singulars
      1. POCustomizing legend text and colors in ggplot2
      1. This table or related slice is empty.
      1. VTUpMod
    1. COA reproducible example (ie some code) will greatly improve the chances that someone can answer this question.
      singulars
      1. POCustomizing legend text and colors in ggplot2
      1. USjoran
    2. COFollow the guidelines here: http://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example to give a reproducible example. This question should not be difficult, but the answer will depend on what code you've already gotten written.
      singulars
      1. POCustomizing legend text and colors in ggplot2
      1. USChase
    3. COplot <- ggplot(data, aes(x = factor(Month), y = avgLoss, colour = type, order = -as.numeric(type))) + geom_line() + geom_point() meanplus2sd <- mean(data$avgLoss) + 2*sd(data$avgLoss) plot <- plot + geom_hline(aes(yintercept = meanplus2sd), colour = "black") ... produces black line that says "black" in the legend plot <- plot + geom_hline(aes(yintercept = meanplus2sd, colour = "Mean + 2 Stdev.")) ... produces a line that is the next color in my defined scale_colour_manual array, but the legend text is "Mean + 2 Stdev."
      singulars
      1. POCustomizing legend text and colors in ggplot2
      1. USMarver
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload