# [NTG-context] recursion in a table

Mon May 2 02:30:11 CEST 2022

On Sun, 1 May 2022, Henning Hraban Ramm via ntg-context wrote:

> Hi,
> I was playing with the example from
> https://wiki.contextgarden.net/Scaling_Rotating_Mirroring_Clipping#Location_parameter
> and tried to put it in a tabulate:
>
>
> \useMPlibrary[dum]
> \setupexternalfigures[width=3em,height=2em,frame=on,]
>
> %\def\TXT{\ruledhbox{\bf(XyX)}}
> \def\TXT{\externalfigure[pic]}
>
> \starttabulate[|l|l|l|l|l|l|]
>      \NC\NC normal\NC depth\NC fit\NC broad\NC high\NC\NR
>      \HL
> \dostepwiserecurse{0}{359}{45}{%
> %\expanded{\setuprotate[rotation=\recurselevel]}
>      \NC{\expanded{\recurselevel}˚}%

Untested, but I think that you might need:

\expanded{\NC \recurselevel \noexpand\NC ... }

> This works, but \recurselevel is always 0. I know I must expand it (like
> in the original example), but I can’t make it work within the tabulation.
> In the first column, \expanded{\recurselevel} stays 0, and
> rotation=\expanded{\recurselevel} gives an error, while the \setuprotate
> line has no effect (if I remove "rotation=\recurselevel", of course).
>
> How would that work?

Remind me of a more-than-a-decade-old discussion on the mailing list, summarized here: