I have a big table made with tabular, in which each cell is either a "YES" or a "NO".

I would like to put at the bottom a "totals row", ie: a row that counts how many "YES" there are in each column and displays the total. Something like this:

Feature A | Y | N | Y |
Feature B | Y | Y | N |
Feature C | Y | N | Y |
Feature D | Y | N | Y |
TOTAL     | 4 | 1 | 3 |

Can this be done without having to manually count the occurrences? The table is big and subject to frequent changes, it would really be a pain to do it manually every time.

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    This can be done with the collcell package with which you can check each entry of a column and step a counter and then add the value of this counter to the last row. – Peter Grill Jul 7 '15 at 9:22
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    or you can wrap your cell content in a macro with a counter – musicman Jul 7 '15 at 9:26
  • @musicman: this actually sounds more straightforward than using collcell, but is there a way to get the current column index from within a "cell"? Otherwise I would've to use a different macro for each column, which becomes cumbersome. – Master_T Jul 7 '15 at 10:02
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    I don't think so. You would have to wrap each cell in the right command \countA{Y} & \countB{N} .... collcell seems to be the easier way – musicman Jul 7 '15 at 10:25

Using the collcell package you check each entry and step a counter to keep track of the total and at the end output the value of the counter.

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  • With some additional logic one should be able expand it so that there is only one column type, but to keep this simple I defined three separate column types.






\begin{tabular}{l X Y Z}
    Feature A & Y & N & Y \\
    Feature B & Y & Y & N \\
    Feature C & Y & N & Y \\
    Feature D & Y & N & Y \\
    TOTAL     & \arabic{ColumnOne} & \arabic{ColumnTwo} & \arabic{ColumnThree} \\
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