I have the following table:
\begin{tblr}{
colspec={X[l,1]*{9}{X[-0.6]}},
column{1}={cmd=\bfseries},
rowspec={*{6}{m{3em}}},
row{1}={cmd=\bfseries},
hlines,
vlines={1,2,3,4,5,6}{solid},
}
& \SetCell[c=3]{c} SRC && \SetCell[c=3]{c} MSRC && \SetCell[c=3]{c} NFRC & \\
& RF1 & RF2 & ROI & RF1 & RF2 & ROI & RF1 & RF2 & ROI \\
SVM & 0.54 & 0.59 & 0.6 & 0.629 & 0.354 & 0.513 & 0.42 & 0.634 & 0.374 \\
DT & 0.418 & 0.433 & 0 .533 & 0.486 & 0.524 & 0.379 & 0.521 & 0.685 & 0.561 \\
kNN & 0.387 & 0.536 & 0.498 & 0.536 & 0.579 & 0.453 & 0.652 & 0.626 & 0.652 \\
GNB & 0.472 & 0.437 & 0.434 & 0.609 & 0.557 & 0.248 & 0.484 & 0.416 & 0.444 \\
\end{tblr}
\captionsetup{justification=centering}
\captionof{table}{my table test}
\label{table:myTable}
I simply want the other row titles (MSRC & NFRC) to appear where they belong. However, for some reason, the SRC takes over the row completely.
\SetCell[c=3]{c} SRC &&&
as you are spanning three cells.