geom_jitter

[Husen Zhang]

Dear ggplot users:

My dataframe (see below) has 8 rows, but geom_jitter plotted 10 (attached).  I appreciate an explanation from fellow users.

variable value

Observed   171

Observed   143

Observed   200

Observed   184

Observed   173

Observed   181

Observed   369

Observed   111

my system Mac OS 10.10.5

packageVersion('ggplot2')  ‘2.1.0’

R version 3.2.4 (2016-03-10) -- "Very Secure Dishes"

Copyright (C) 2016 The R Foundation for Statistical Computing

Platform: x86_64-apple-darwin13.4.0 (64-bit)

[Richard Zijdeman]

Hi Husen,

ggplot2 works with layers. In the main statement, ggplot(...), you define things like the datasets.

then you define layers on top with the geom_’s.

Now, it’s always a good idea to send along your code with some data, but without those, my best guess is that you’ve done:

- a geom_jitter() showing 8 data points

- a geom_boxplot() which shows 2 outliers (although there could be other one’s that coincidentally overlap with the geom_jitter).

just try one geom at a time. and check [1] if you don’t want the geom_boxplot to show the outliers.

Best,

Richard

[1] http://stackoverflow.com/questions/5677885/ignore-outliers-in-ggplot2-boxplot

--  

Dr. R.L. Zijdeman | CDO | International Institute of Social History | Cruquiusweg 31 | 1019 AT Amsterdam | +31 20 668 5 866

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<jitter.jpeg>