[R] barplot3d cutting off labels

[emorway]

Hello, 

Using the function that is available at:

http://addictedtor.free.fr/graphiques/sources/source_161.R

The following command leads to a plot with labels that are cut off:

barplot3d(c(4.01,4.71,2.03,1.28,1.42,1.76,0,
            6.58,3.25,3.11,2.10,2.05,1.19,1.28,
            6.44,5.50,3.69,4.53,3.33,1.70,2.57,
            6.01,5.36,5.90,6.61,4.67,2.62,3.83,
            10.69,5.90,5.62,6.64,5.71,5.35,3.18,
            8.98,7.30,7.73,7.23,14.10,8.65,4.00,
            13.39,10.91,5.57,7.34,6.03,5.44,3.24),
     rows=7, theta = 55, phi = 22, expand=0.9,
     col.lab=c("GWTD < 1","1 <= GWTD < 2","2 <= GWTD < 3","3 <= GWTD < 4","4
<= GWTD < 5","5 <= GWTD < 6","GWTD > 6"), 
     row.lab=c("GW ECe < 1","1 <= GW ECe < 2","2 <= GW ECe < 3","3 <= GW ECe
< 4","4 <= GW ECe < 5","5 <= GW ECe < 6","GW ECe > 6"),
    
col.bar=c("#FF6633","#FFFF33","#99CCFF","#9933FF","#44ff58","#CCFFFF","#FF6666"),
     z.lab="Soil ECe")

I've also tried to use par(mar=c(5,5,5,5)) or par(oma=c(5,5,5,5)), but to no
avail.  Any ideas?

Thanks, 
E

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