Re: Re: evaluating rows or columns in org-table

["Gabriel Peters" <gabrielpeters1000@gmail.com>]

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On Wed, Jul 30, 2008 at 9:16 AM, Bernt Hansen <bernt@norang.ca> wrote:

> Sorry that last post was unfinished.
>
> Here's my attempt at fixing the student rank
>
> |   | Rank | names      | grade 1 | grade 2 | grade 3 | Total | Letter
> grade |
>
> |---+------+------------+---------+---------+---------+-------+--------------|
> | # |    1 | student 01 |   91.80 |   96.40 |   97.00 | 95.07 | A
>  |
> | # |    3 | student 03 |   92.00 |   95.14 |   97.00 | 94.71 | A
>  |
> | # |    2 | student 02 |   88.78 |   89.15 |   98.00 | 91.98 | A
>  |
> | # |    4 | student 04 |   84.00 |   74.62 |   88.00 | 82.21 | B
>  |
> #+TBLFM:
> $7=($4+$5+$6)/3;%.2f::$8=if($7<60,F,if($7<70,D,if($7<80,C,if($7<90,B,A))))::@2$2=1::$2=@-1+1
>
> You can sort the table by the total column descending to get the rank.
>
> If you sort the resulting table like this:
>
>  1) Position cursor on any total value
>  2) M-x org-table-sort-lines
>  3) N (for reverse numeric sort)
>
> Then update the Rank column with C-u C-u C-c C-c anywhere in the table
> the rank numbers are recomputed starting from 1 on the first row.
>
> I hope your blank lines aren't too important because sorting puts them
> all at the bottom of the table.



The blank lines do also pose a problem in different approach, one which will
make use of vector functions in calc. If you allow for no empty lines and
one extra line toward the end of table, this also can do the computation.


|   | Rank | names      | grade 1 | grade 2 | grade 3 | Total | Letter grade
|
|---+------+------------+---------+---------+---------+-------+--------------|
| # |    1 | student 01 |   91.80 |   96.40 |   97.00 | 95.07 | A
|
| # |    2 | student 03 |   92.00 |   95.14 |   97.00 | 94.71 | A
|
| # |    3 | student 02 |   88.78 |   89.15 |   98.00 | 91.98 | A
|
| # |    4 | student 04 |   84.00 |   74.62 |   88.00 | 82.21 | B
|
|---+------+------------+---------+---------+---------+-------+--------------|
#+TBLFM: $2=find(rsort(@I$7..@II
$7),$7)::$7=($4+$5+$6)/3;%.2f::$8=if($7<60,F,if($7<70,D,if($7<80,C,if($7<90,B,A))))



>
> Does that do what you want?
>
> -Bernt
>
>
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