Distinguir entre colunas múltiplas e colunas únicas com base no conteúdo da célula em pgfplotstable

Question

Eu tenho um arquivo .csv como este:

\begin{filecontents}{data.csv}
  type,Description,Value
  typA,Description0,Value0
  typA,Description1,Value1
  typB,Description2,Value2
  typA,Description3,Value3
\end{filecontents}

Dependendo do conteúdo da typecoluna, quero distinguir entre colunas múltiplas e colunas únicas.

Neste MWE simples, sempre deve haver colunas únicas além da linha onde typBé mencionada. Neste caso, apenas a Descrição deverá ser impressa no centro da linha, conforme mostra a imagem.

Eu acho que isso é parecido com issohttps://tex.stackexchange.com/a/459848/104358pergunta, mas no meu caso não quero definir as linhas específicas codificadas. Eles devem ser calculados dinamicamente, verificando o conteúdo da coluna de tipo.

Tentei conseguir isso com a ajuda de \pgfplotstablegetelemmas isso parece não estar definido no typeset cell/.codeambiente.

\documentclass{standalone}
\usepackage{pgfplotstable}
\usepackage{ifthen}
\pgfplotsset{compat=newest}

\begin{filecontents}{data.csv}
type,Description,Value
typA,Description0,Value0
typA,Description1,Value1
typB,Description2,Value2
typA,Description3,Value3
\end{filecontents}
\pgfplotstableread[col sep=comma]{data.csv}{\csvdata}
\pgfplotstablegetrowsof{\csvdata}
\pgfmathtruncatemacro\CSVDataRows{\pgfplotsretval-1} 

\pgfplotstableset{
typeset cell/.code={%
    %\pgfplotstablegetelem{\pgfplotstablerow}{type}\of{\csvdata}
    %\ifthenelse{\equal{\pgfplotsretval}{typB}}{
        % Equivalent to: \ifnum\pgfplotstablerow = 2
    %}{
        % Equivalent to: \ifnum\pgfplotstablerow != 2
    %}
    \ifnum\pgfplotstablerow=2 %=> This row depends on the content of column type! 
        \ifnum\pgfplotstablecol=\pgfplotstablecols
            \pgfkeyssetvalue{/pgfplots/table/@cell content}{\\}%
        \else%
            \ifnum\pgfplotstablecol=2%
                \pgfkeyssetvalue{/pgfplots/table/@cell content}{\multicolumn{3}{c}{#1}}%
            \else%
                \pgfkeyssetvalue{/pgfplots/table/@cell content}{}%
            \fi
        \fi
    \else%
        \ifnum\pgfplotstablecol=\pgfplotstablecols
            \pgfkeyssetvalue{/pgfplots/table/@cell content}{#1\\}%
        \else%
            \pgfkeyssetvalue{/pgfplots/table/@cell content}{#1 &}%
        \fi
    \fi
},
}
\begin{document}
\pgfplotstabletypeset[col sep = comma,
string type, 
column type = l,
multicolumn names,
]{\csvdata}
\end{document}

Answer 1

Encontrei uma solução para resolver meu problema! Talvez não seja o melhor, mas ainda funciona!

O truque era ter um caso especial para \pgfplotstablerow=-1Isto é necessário, porque \pgfplotstablerowcomeça a contar a partir de -1(Linha da Cabeça incluída), mas \pgfplotstablegetelem{}{}\of{\csvdata}começa a partir de 0(Atrás da Linha da Cabeça).

\documentclass{standalone}
\usepackage{pgfplotstable}
\usepackage{ifthen}
\pgfplotsset{compat=newest}

\begin{filecontents}{data.csv}
Type,Description,Value
typA,descriptionA0,value0
typB,descriptionA1,value1
typA,descriptionB2,value2
\end{filecontents}
\pgfplotstableread[col sep=comma]{data.csv}{\csvdata}
\pgfplotstablegetrowsof{\csvdata}
\pgfmathtruncatemacro\CSVDataRows{\pgfplotsretval-1} 

\newcounter{endRowCounter}

\pgfplotstableset{
    col sep=comma,
    string type,
    typeset cell/.code={%
        \setcounter{endRowCounter}{\pgfplotstablerows}
        \addtocounter{endRowCounter}{1}

        \ifthenelse{\pgfplotstablerow=-1}{
            \ifnum\pgfplotstablecol=\pgfplotstablecols
                \pgfkeyssetvalue{/pgfplots/table/@cell content}{#1\\}%
            \else
                \pgfkeyssetvalue{/pgfplots/table/@cell content}{#1 &}
            \fi
        }{
            \ifthenelse{\pgfplotstablerow<\value{endRowCounter}}{
                \pgfplotstablegetelem{\pgfplotstablerow}{Type}\of{\csvdata}
                \ifthenelse{\equal{\pgfplotsretval}{typB}}{
                    \ifnum\pgfplotstablecol=\pgfplotstablecols
                        \pgfkeyssetvalue{/pgfplots/table/@cell content}{\\}%
                    \else
                        \ifnum\pgfplotstablecol=1
                            \pgfkeyssetvalue{/pgfplots/table/@cell content}{\multicolumn{3}{c}{#1}}%
                        \else
                            \pgfkeyssetvalue{/pgfplots/table/@cell content}{}%
                        \fi
                    \fi
                }{
                    \ifnum\pgfplotstablecol=\pgfplotstablecols
                        \pgfkeyssetvalue{/pgfplots/table/@cell content}{#1\\}%
                    \else
                        \pgfkeyssetvalue{/pgfplots/table/@cell content}{#1 &}%
                    \fi
                }
            }{}
        }
    },
}

\begin{document}
\pgfplotstabletypeset{\csvdata}
\end{document}

RESULTADO