Re: Again problems with the creation of tables...

[meino.cramer@...]

Tom N Harris <telliamed@whoopdedo.org> [13-10-25 21:28]:
> Hello, the problem with your code is here:
> 
> > data={}
> ...
> >     data[i][text]=1
> 
> There are two things you're forgetting here. The first is that the inner table 
> has not been created yet. There's a shortcut (using metatables) for doing 
> this, but this is the long way that's easier to understand.
> 
>     if not data[i] then
>       data[i] = {}
>     end
> 
> Now you can use the second subscript. To accumulate a counter is a similar 
> process.
> 
>     data[i][text] = data[i][text] and (data[i][text] + 1) or 1
> 
> Okay, maybe not quite the same. The "THIS and THAT or SOMETHING_ELSE" is a 
> quick way to do an if..then..else block. It works here because the values are 
> all numbers.
> 
> I would advise you to change the way you loop through the file. You're code 
> works in column order, but the file is in row order, so you have to rewind the 
> file on every column which is very slow. Read each row first then read the 
> columns from that row into your table.
> 
> -- 
> tom <telliamed@whoopdedo.org>
> 

Hi Tom,

THANK YOU very much! It works! :)

Have a nice weekend!
Best regards,
mcc