Re: [Gretl-users] boxplot of matrix
> Dear gretl users,
>
> I have created a matrix with 4 columns and 1000 rows and now I'd like
> to use the boxplot command on it, but it is (despite it should) not
> working... what am I getting wrong? Here is a MWE:
>
> ----------
> nulldata 1000
> matrix A=zeros(1000,4)
> loop for r=1..1000
> loop for c=1..4
> A[r,c]= randgen1(u,0,c)
> endloop
> endloop
>
> boxplot --matrix=A --output=display
> ------------
> Error msg:
> ? boxplot --matrix=A --output=display
> Command has insufficient arguments
>
You have to tell boxplot which columns of the matrix you want plotted. In
your case, I suspect that what you want is
<hansl>
boxplot 1 2 3 4 --matrix=A --output=display </hansl>
Also: you may want to use the --quiet option for loops ;)
That's it, many thanks! The quick-help documentation needs an update than, I guess:
"Generally, the argument varlist is required, and refers to one or more series in the
current dataset (given either by name or ID number). But if a named matrix is supplied via
the --matrix option this argument becomes optional: by default a plot is drawn for each
column of the specified matrix."
To me this implies that I do not need to specify the columns. This option is not even
mentioned.
-Frederik