From: Thierry Banel <tbanelwebmin@free.fr>
To: emacs-orgmode@gnu.org
Subject: Re: spee-up table refresh
Date: Mon, 09 Jan 2017 23:27:49 +0100 [thread overview]
Message-ID: <58740E65.10509@free.fr> (raw)
In-Reply-To: <87pojxyw2t.fsf@nicolasgoaziou.fr>
Le 09/01/2017 00:24, Nicolas Goaziou a écrit :
> Note that recalculating a table is inherently quadratic.
Well, on the test-case your change made recalculation linear (which is
good):
| rows | seconds |
|-------+---------|
| 1000 | 1.5 |
| 10000 | 13 |
| 20000 | 25 |
| 30000 | 37 |
>
>> Here is a test case.
>>
>> 1- First create a 1000 row table:
>>
>> #+BEGIN_SRC elisp :results none
>> (goto-char (point-max))
>> (let ((i 1000))
>> (while (> i 0)
>> (insert (format "| %4s | |\n" i))
>> (setq i (1- i))))
>> (insert "#+TBLFM: $2=$1*10\n")
>> #+END_SRC
>>
>> 2- Then, with point in the table, type C-u C-c *
> I limited calls to `org-element-at-point'. It should be much faster now.
> Thank you.
>
And you did so through an impressively light change: swapping two lines
with a test on `suppress-analysis'.
Thanks and regards.
Thierry
prev parent reply other threads:[~2017-01-09 22:27 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-08 17:28 spee-up table refresh Thierry Banel
2017-01-08 23:24 ` Nicolas Goaziou
2017-01-09 22:27 ` Thierry Banel [this message]
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