2

I try to set the color of a cell in a tabularray by a command:

\documentclass{article} \usepackage{xcolor} \usepackage{tabularray} \ExplSyntaxOn \newcommand{\Tcolor}{ green } \ExplSyntaxOff \begin{document} \textcolor{\Tcolor}{abc} \begin{tblr}{ colspec = {l}, cell{1}{1} = {\Tcolor}, } abc \\ \end{tblr} \end{document}

Somehow the color cell{1}{1} = {\Tcolor}, breaks. Why?

cell{1}{1} = {green}, works...

EDIT: I guess in my attempt to create a MWE I shortened it too much. There is a need for a function instead of a simple color:

\documentclass{article} \usepackage{xcolor} \usepackage{tabularray} \ExplSyntaxOn \newcommand{\Tcolor}[1]{ \int_compare:nNnTF {#1} = {0} { red } { \int_compare:nNnTF {#1} < {30} { orange } { \int_compare:nNnTF {#1} < {40} { green } { blue } } } } \ExplSyntaxOff \begin{document} \textcolor{\Tcolor{32}}{abc} \begin{tblr}{ colspec = {l}, cell{1}{1} = {\Tcolor{32}}, cell{1}{2} = {\Tcolor{48}}, } abc \\ def \\ \end{tblr} \end{document}
Improve this question
1
  • 1
    This is not the best way to define colors. Do \colorlet{Tcolor}{green} and use cell{1}{1}=Tcolor Commented Jul 27, 2023 at 20:09

1 Answer 1

Reset to default
3

The cell{<i>}{<j>} key can accept several types of values; for instance, according to the manual, you can do

cell{1}{1}={cmd=\fbox}

Thus the managing of values is necessarily complex. When a value is just a string that's not another key, it is interpreted as a color name for the background.

You can use bg=<color> and, in this case, you can use a macro.

\documentclass{article} \usepackage{xcolor} \usepackage{tabularray} \ExplSyntaxOn \NewExpandableDocumentCommand{\Tcolor}{m} { \bool_case:nF { { \int_compare_p:n {#1 = 0} }{ red!80 } { \int_compare_p:n {0 < #1 < 30} }{ orange } { \int_compare_p:n {30 <= #1 < 40} }{ green!80 } } { blue!60!green } } \ExplSyntaxOff \begin{document} \textcolor{\Tcolor{32}}{abc} \medskip \begin{tblr}{ colspec = {l}, cell{1}{1} = {bg=\Tcolor{0}}, cell{2}{1} = {bg=\Tcolor{15}}, cell{3}{1} = {bg=\Tcolor{32}}, cell{4}{1} = {bg=\Tcolor{48}}, } abc \\ def \\ ghi \\ jkl \\ \end{tblr} \end{document}

Note the use of \bool_case:nF in order to avoid the awkward nesting of conditionals.

enter image description here

Improve this answer
4
  • Thanks. But I now realize that I had shortened my example too much. I really want to choose a color depending on a variable. Please see my edited question. Commented Jul 27, 2023 at 20:53
  • @mrCarnivore Edited to suit your needs. Commented Jul 27, 2023 at 21:23
  • Thank you very much for that elegant solution. The \bool_case:nF is very neat compared to my earlier attempt. I also noticed the subtle change of the colors to make them visually more appealing. I fully agree your colors are better than in my example. In my real example I am using other colors that are also not pure green or red. Commented Jul 28, 2023 at 11:03
  • @mrCarnivore I changed the colors so they're not punching in the eye of the beholder. 😁 I can tell you that I made the request for \bool_case:n(TF). Commented Jul 28, 2023 at 12:18

You must log in to answer this question.

Start asking to get answers

Find the answer to your question by asking.

Ask question

Explore related questions

See similar questions with these tags.