Question: Problem with DataFrames Statistics and Plots

Dear all,

I am new to Maple and trying to figure out the use of dataframes. The help files say you can use dataframes in plotting but I keep getting errors. I have the following code which uploads a short dataframe with column headers which include x and y. I use

with(plots);
with(Statistics);
mydat := Import("this:///Datafiles/greg.csv"); 

with(mydat);
dataplot(x,y);

I receive the following error message 
Error, (in Plot:-DataPlot) invalid input: lhs received _m4754289856, which is not valid for its 1st argument, expr

Can anyone spot what I'm doing wrong?

Thanks in advance

Jo

 

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