Hi,

Don't have a clue what teh following error message


generated by this function call:
qqmath( ~val|ind,data = xx
       ,distribution = function(p){ qt(p,df=20)}
       ,ylab="Sample Quatinles"
       ,xlab="Theoretical Quantiles"

       ,panel=function(x,y)
       {
         panel.qqmathline(y
                          , distribution=function(p) qt(p,df=20)
                          ,col=2)
         panel.qqmath(x, y
                      , distribution=function(p) qt(p,df=20)
                      ,pch=".",cex=2)
       }
)

means. Espacially that this function call

qqmath( ~val|ind,data = xx
       ,distribution = function(p){ qt(p,df=20)}
       ,ylab="Sample Quatinles"
       ,xlab="Theoretical Quantiles"
)

with the same data is working.

Thanks in advance for suggestions.

Eryk

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