Sstrhsrtj

the edges are not drawn, why ?
How can it be solved?

I want complete table:

 documentclass[12pt]{article}  

usepackage{multirow}

usepackage{multicol}

usepackage{copyrightbox}

    %https://tex.stackexchange.com/questions/65604/hhline-adds-white-line-where-no-line-is-intended

usepackage{colortbl}

usepackage{hhline}

    begin{document}

    begin{table}

      centering

        copyrightbox[b]{

          begin{tabular}{|p{25mm}|c|c|c|c|}

            hhline{*{3}{|-}|~|}

            technique & multicolumn{2}{c|}{aaaaa}\

            hhline{*{3}{|-}|~|}



             %I dont yet know how to do it locally, so modiying the multirow color globally and then redefining it.

            hhline{|>{arrayrulecolor{cyan}}->{arrayrulecolor{black}}|-|-|}

             multirow{-2}{=}{{cellcolor{cyan}1}}& {cellcolor{cyan}1e-1} & {cellcolor{cyan}1e-2}  & {cellcolor{cyan}1e-2}  \

             multirow{-2}{=}{{2}}& {1e-1} & {1e-2}  & {1e-2}  \

            hhline{*{3}{|-}|~|}

            multirow{-2}{=}{{3}}& {1e-1} & {1e-2}  & {1e-2}  \

            hhline{*{3}{|-}|~|}

            multirow{-2}{=}{{4}}& {1e-1} & {1e-2}  & {1e-2}  \

            hhline{*{3}{|-}|~|}

            multirow{-2}{=}{{5}}& {1e-1} & {1e-2}  & {1e-2}  \

            hhline{*{3}{|-}|~|}



    % etc. ...

          end{tabular}   

        }{copyright info text}

    end{table} 

    end{document}

I hope I understand correctly what you want.

documentclass{article}

usepackage[table]{xcolor}



begin{document}

begin{tabular}{|p{25mm}|c|c|c|}

  hline

  technique & multicolumn{3}{c|}{aaaaa} \

  hline

  rowcolor{cyan}

  1 & 1e-1 & 1e-2 & 1e-2 \

  hline

  2 & 1e-1 & 1e-2 & 1e-2 \

  hline

  3 & 1e-1 & 1e-2 & 1e-2 \

  hline

  4 & 1e-1 & 1e-2 & 1e-2 \

  hline

  5 & 1e-1 & 1e-2 & 1e-2 \

  hline

end{tabular}

end{document}

Easiest way to enlarge a table vertically is to redefine arraystretch to something bigger than 1 (begingroup and endgroup added to keep the change local):

documentclass[border=2mm]{standalone}

usepackage[table]{xcolor}



begin{document}

begingroup

defarraystretch{1.2}%

begin{tabular}{|p{25mm}|c|c|c|}

  hline

  technique & multicolumn{3}{c|}{aaaaa} \

  hline

  rowcolor{cyan}

  1 & 1e-1 & 1e-2 & 1e-2 \

  hline

  2 & 1e-1 & 1e-2 & 1e-2 \

  hline

  3 & 1e-1 & 1e-2 & 1e-2 \

  hline

  4 & 1e-1 & 1e-2 & 1e-2 \

  hline

  5 & 1e-1 & 1e-2 & 1e-2 \

  hline

end{tabular}

endgroup

end{document}

Try this

documentclass[12pt]{article}  

usepackage{copyrightbox}

%https://tex.stackexchange.com/questions/65604/hhline-adds-white-line-where-no-line-is-intended

usepackage{colortbl}

begin{document}

    begin{table}

        centering

        copyrightbox[b]{

            begin{tabular}{|p{25mm}|c|c|c|}

                hline

                technique & multicolumn{3}{c|}{aaaaa}\

                hline

                {cellcolor{cyan}x}& {cellcolor{cyan}Margen C} &  {cellcolor{cyan}Gamma}&{cellcolor{cyan}y}\

                hline

                OC-SVM & Margen C & Gamma&1\hline

                OC-SVM& 1e-1 & 1e-2 &2 \

                hline

                RNA & Lr & error&3\hline

                OC-SVM& 0.9 & 0.0001&3  \

                hline

                % etc. ...

            end{tabular}   

        }{copyright info text}

    end{table} 

end{document}

This would give you:

Everybody starts as a beginner, it's always better to read the manual first (most of the answers are there per se). Something that I learnt recently ;)