Same boxplot width

[Christos Gkenas]

Hello all

I want to create boxplots with NMDS scores from 2 species collected from 4 different sites. Two sites (Degebe amd Vascao) are allopatric and two other sites (Ardila, Guadiana) are sympatric

I managed to produce a plot with the following R script

(p = ggplot(data = Chris, aes(x=Sites, y=NMDS2, fill=Fishes)) + geom_boxplot(position=position_dodge(1)) +

+ theme_bw(base_size = 18) +

+ theme(panel.grid.major = element_blank(), panel.grid.minor = element_blank()) )

> p + scale_fill_manual(breaks = c("A. facetus", "L. gibbosus"),

+ values=c("white", "azure4"))

However, as you can see from the attached figure, the boxplot width from the allopatric sites is the double size of the sympatric ones. I would like to ask if it is possible to have the same width for all the boxplots and second, how to modify the limits of the yaxis, for example form -1.5 to 1.5 in order to be comparable with the scores from the NMDS1

Thank you in advance

[Roman Luštrik]

How many data points are there? If you have a few, you might be better off with a geom_jitter.

Cheers,

Roman

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[Theo Mouton]

Hi Christos, 

Geom_boxplot has a width attribute. I do not have my scripts here but it was something like geom_boxplot(aes(width=)). You should find this on stack. 

For the y scale doesn't scale_y_continuous() fit ?? 

Cheers, 

Theo 

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[Theo Mouton]

Hi Christos,

 

Perhaps this could help, instead of using geom_boxplot you could try :

 

stat_summary(geom="boxplot", aes(width=0.8))

 

Cheers,

 

Theo

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