Boxplots with three subgroups

Hi,

I am trying to plot a boxplot with 3 different groups but I somehow not all of the data is getting displayed.

For each Electrode type there are 2 types of measurements, and for each measurement type there are 6 samples.

The plot below is nearly what I want but for some reason only 3 of the samples get displayed each time.

This is my code:

Electrodes = repmat({'B1' 'B2' 'B3' 'B4'},1,12);
DepolType = [repmat({'Type1'},1,24),repmat({'Type2'},1,24)];
Samples=repmat({'Sam.1' 'Sam.2' 'Sam.3' 'Sam.4' 'Sam.5' 'Sam.6'},1,8);
boxplot(Plot2,{Electrodes,DepolType, Samples},'colors',C,'factorgap',[20 2 2]...
    ,'labelverbosity','minor','plotstyle','compact', 'LabelOrientation', 'horizontal');

The variable Plot 2 is a 40x48 double. There are 6 samples per Type and 2 Types per Electrode (4 Electrodes): 2*6*4

I am not very confident with the various input types for boxplot, so I don't really understand what is going on.