Error Bars (ggplot)

Error bars are a basic chart type in ggplot and easy to execute.

Data

Synthetic sensor data set is created.

View the data:

Basic Error Bar Syntax

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Error Bar Aesthetics

geom_errorbar() takes the following aesthetic arguments: x axis data, ymin and ymax value data, color, linetype, horizontal bar width, and the alpha or transparency level.  Error bars can be plotted alone or in layers with points, line and bars, as shown below. 

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