Mfrhtyj

I am trying to get my table working for last couple of days. But I couldnt fix the problem. The way I want my table to look like is below (figure 1).

With my following code

begin{table}[p]

begin{tabular}{ccccccccc}

    hline

    Compound               & multicolumn{4}{c}{A}                                                                          & multicolumn{4}{c}{B}                                                                         \

    AT                     & #1                     & #2                    & #1                    & #2                    & #1                    & #2                    & #1                    & #2                    \

    feedstock              & multicolumn{2}{c}{C}                          & multicolumn{2}{c}{B}                         & multicolumn{2}{c}{C}                         & multicolumn{2}{c}{B}                         \ hline

    Par 1                  & 1                      & 1                     & 2                     & 2                     & 3                     & 3                     & 4                     & 4                     \

    Par 2                  & 1                      & 1                     & 2                     & 2                     & 3                     & 3                     & 4                     & 4                     \

    Par 3                  & 1                      & 1                     & 2                     & 2                     & 3                     & 3                     & 4                     & 4                     \

    Par 4                  & multicolumn{2}{c}{1}                          & multicolumn{2}{c}{2}                         & multicolumn{2}{c}{3}                         & multicolumn{2}{c}{4}                         \ hline

    multicolumn{9}{l}{Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah} \ hline

end{tabular} end{table}

I am getting (figure 2):

I tried using tabularx and defined the size of each column. It worked until I added last long row (which is a merged form of all 9 columns). Also the the header "B" and last coulmn (figure 1) is going out of the page in figure 2.

It would be nice if someone can help me. Also, detailed explanation of the solution would be appreciated.

Thanks in advance.

As far as I can tell, the "Blah Blah ..." material is only indirectly related to the preceding, table-like material. Is the "Blah Blah" material maybe some kind of legend? If this guess is correct, you'd be better off not placing it inside the tabular environment. Instead, I suggest you load the threeparttable package and place the legend in a tablenotes environment, which (thanks to the behind-the-scenes work of the threeparttable environment) will automatically be as wide as the preceding tabular environment.

In case you're curious about the name threeparttable of the package: It can handle three types of elements: The table caption (which is absent in the case of your code), the tabular-like material, and the tablenotes material. The package works, though, even if there is no caption.

documentclass{article}

usepackage[flushleft]{threeparttable}

begin{document}

begin{table}

centering

begin{threeparttable}

begin{tabular}{@{} l *{8}{c} @{}}

hline

Compound  & multicolumn{4}{c}{A} & multicolumn{4}{c}{B} \

AT  & #1 & #2 & #1 & #2 & #1 & #2 & #1 & #2 \

feedstock & multicolumn{2}{c}{C} & multicolumn{2}{c}{B} 

          & multicolumn{2}{c}{C} & multicolumn{2}{c}{B} \ 

hline

 Par 1 & 1 & 1 & 2 & 2 & 3 & 3 & 4 & 4 \

 Par 2 & 1 & 1 & 2 & 2 & 3 & 3 & 4 & 4 \

 Par 3 & 1 & 1 & 2 & 2 & 3 & 3 & 4 & 4 \

 Par 4 & multicolumn{2}{c}{1} & multicolumn{2}{c}{2} 

       & multicolumn{2}{c}{3} & multicolumn{2}{c}{4} \ 

hline

end{tabular}



smallskip

begin{tablenotes}

itemNotes: Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah

end{tablenotes}

end{threeparttable}

end{table}

end{document}

since you tag your question with tabularx i suggest to use this package. beside it more nice result you will obtain by use of the booktabs package for horizontal rules:

documentclass{article}

usepackage{booktabs, tabularx}

newcolumntype{C}{>{centeringarraybackslash}X}

newcommandmcc[1]{multicolumn{2}{c}{#1}}



%---------------- show page layout. don't use in a real document!

usepackage{showframe}

renewcommandShowFrameLinethickness{0.15pt}

renewcommand*ShowFrameColor{color{red}}

%---------------------------------------------------------------%



begin{document}

    begin{table}[p]

begin{tabularx}{linewidth}{@{} c *{8}{C} @{}}

    toprule

Compound    & multicolumn{4}{c}{A}         & multicolumn{4}{c}{B}         \

    cmidrule(lr){2-5}cmidrule(l){6-9}

    AT      & #1   & #2   & #1   & #2   & #1   & #2   & #1   & #2   \

    cmidrule(lr){2-3}cmidrule(lr){4-5}

    cmidrule(lr){6-7}cmidrule(lr){8-9}

feedstock   & mcc{C}       & mcc{B}       & mcc{C}       & mcc{B}       \

    midrule

Par 1       & 1     & 1     & 2     & 2     & 3     & 3     & 4     & 4     \

Par 2       & 1     & 1     & 2     & 2     & 3     & 3     & 4     & 4     \

Par 3       & 1     & 1     & 2     & 2     & 3     & 3     & 4     & 4     \

Par 4       & mcc{1}       & mcc{2}       & mcc{3}       & mcc{4}       \

    midrule

multicolumn{9}{@{} p{linewidth} @{}}{Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah} \

    bottomrule

end{tabularx}

    end{table}

end{document}

(red lines indicate text border)

You can add width argument to your columns, like multicolumn{9}{p{linewidth}}. Perhaps multicolumn{9}{p{.7linewidth}} will do even better. Addding this to your example produces the following https://imgur.com/WcNyPXb

Here is the complete code of mwe

documentclass{article}

begin{document}

begin{table}[p]

begin{tabular}{ccccccccc}

hline

Compound               & multicolumn{4}{c}{A}                                                                          & multicolumn{4}{c}{B}                                                                         \

AT                     & #1                     & #2                    & #1                    & #2                    & #1                    & #2                    & #1                    & #2                    \

feedstock              & multicolumn{2}{c}{C}                          & multicolumn{2}{c}{B}                         & multicolumn{2}{c}{C}                         & multicolumn{2}{c}{B}                         \ hline

Par 1                  & 1                      & 1                     & 2                     & 2                     & 3                     & 3                     & 4                     & 4                     \

Par 2                  & 1                      & 1                     & 2                     & 2                     & 3                     & 3                     & 4                     & 4                     \

Par 3                  & 1                      & 1                     & 2                     & 2                     & 3                     & 3                     & 4                     & 4                     \

Par 4                  & multicolumn{2}{c}{1}                          & multicolumn{2}{c}{2}                         & multicolumn{2}{c}{3}                         & multicolumn{2}{c}{4}                         \ hline

multicolumn{9}{p{linewidth}}{Blah Blah Blah Blah Blah Blah Blah Blah Blah 

Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah} \ hline

end{tabular} end{table}

end{document}