In alternativa puoi usare ConTeXt-mkii ed importare la tabella come pdf.
`
\starttext
\startTEXpage
\setupTABLE[x][topframe=off,align={middle,lohi}]
\setupTABLE[x][1,2][width=0.15\textwidth]
\setupTABLE[x][3,4][width=2em]
\setupTABLE[x][4][rightframe=off]
\bTABLE
\bTR \bTD[nx=2] Classe predetta \eTD \bTD[rightframe=off,bottomframe=off]\eTD \bTD[leftframe=off,bottomframe=off]\eTD \eTR
\bTR \bTD Positivo \eTD \bTD Negativo \eTD \bTD[rightframe=off]\eTD\bTD[leftframe=off]\eTD\eTR
\bTR \bTD TP \eTD \bTD FN \eTD \bTD[offset=0.5em] \rotate[rotation=270]{positivo} \eTD \bTD[offset=0.5em,ny=2] \rotate[rotation=270]{Classe Reale} \eTD \eTR
\bTR \bTD FP \eTD \bTD TN \eTD \bTD[offset=0.5em] \rotate[rotation=270]{negativo}\eTD \eTR
\eTABLE
\stopTEXpage
\stoptext
`
