Re: [O] Recursive formulaes in org-mode tables

[Shankar Rao]

I posted the following on Stack Overflow:

I recommend using the following range formula:

| Year (Beginn) |    Price | Increase |

|---------------+----------+----------|

|          2016 | 20000.00 |  1000.00 |

|          2017 |          |  1000.00 |

|          2018 |          |  1000.00 |

|          2019 |          |  1000.00 |

|          2020 |          |  1000.00 |

|          2021 |          |  1000.00 |

|          2022 |          |  1000.00 |

|          2023 |          |  1000.00 |

|          2024 |          |  1000.00 |

|          2025 |          |  1000.00 |

|          2026 |          |  1000.00 |

|          2027 |          |  1000.00 |

|          2028 |          |  1000.00 |

|          2029 |          |  1000.00 |

|          2030 |          |  1000.00 |

|---------------+----------+----------|

#+TBLFM: @<<<$2..@>$2=@<<$0+2*vsum(@<<address@hidden);%.2f

You could write a recursive formula, but that would propagate one row at a time. Even org-table-iterate (C-u C-u C-c * on any table cell) would have to be called more than once, since it stops after 10 iterations.

Shankar Rao

On Tue, Oct 13, 2015 at 8:35 AM, <address@hidden> wrote:

Hi,

I have the following table:

| Year (Beginn) |    Price | Increase |
|---------------+----------+----------|
|          2016 | 20000.00 |  1000.00 |
|          2017 |          |  1000.00 |
|          2018 |          |  1000.00 |
|          2019 |          |  1000.00 |
|          2020 |          |  1000.00 |
|          2021 |          |  1000.00 |
|          2022 |          |  1000.00 |
|          2023 |          |  1000.00 |
|          2024 |          |  1000.00 |
|          2025 |          |  1000.00 |
|          2026 |          |  1000.00 |
|          2027 |          |  1000.00 |
|          2028 |          |  1000.00 |
|          2029 |          |  1000.00 |
|          2030 |          |  1000.00 |
|---------------+----------+----------|

I want to compute the price recursively such that the final table looks
like this:

| Year (Beginn) |    Price | Increase |
|---------------+----------+----------|
|          2016 | 20000.00 |  1000.00 |
|          2017 | 22000.00 |  1000.00 |
|          2018 | 24000.00 |  1000.00 |
|          2019 | 26000.00 |  1000.00 |
|          2020 | 28000.00 |  1000.00 |
|          2021 | 30000.00 |  1000.00 |
|          2022 | 32000.00 |  1000.00 |
|          2023 | 34000.00 |  1000.00 |
|          2024 | 36000.00 |  1000.00 |
|          2025 | 38000.00 |  1000.00 |
|          2026 | 40000.00 |  1000.00 |
|          2027 | 42000.00 |  1000.00 |
|          2028 | 44000.00 |  1000.00 |
|          2029 | 46000.00 |  1000.00 |
|          2030 | 48000.00 |  1000.00 |
|---------------+----------+----------|
After reading a related SO question I tried the formula

#+TBLFM: @<<<..>$2=@<<..>>$2+2*$3

but it doesn't work. It gives an error and also seems to operate on
column one instead of the specified column two. Any idea how to
correctly compute column two? I am using org-mode version 8.2.5c with
Emacs version 24.5.1.

Disclaimer: I posted this question also on Stack Overflow:

http://stackoverflow.com/questions/33063425/recursive-formulaes-in-org-mode-tables

Feel free to answer here or there.

Thanks!

Best,
Michael