From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Seweryn Kokot Newsgroups: gmane.emacs.help Subject: How modify numbers in a region by a multiplier? Date: Thu, 1 Jul 2010 13:55:11 +0000 (UTC) Message-ID: NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Trace: dough.gmane.org 1277992563 10335 80.91.229.12 (1 Jul 2010 13:56:03 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Thu, 1 Jul 2010 13:56:03 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Thu Jul 01 15:55:58 2010 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1OUKFA-0004VR-TQ for geh-help-gnu-emacs@m.gmane.org; Thu, 01 Jul 2010 15:55:57 +0200 Original-Received: from localhost ([127.0.0.1]:43521 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1OUKFA-0003IQ-7t for geh-help-gnu-emacs@m.gmane.org; Thu, 01 Jul 2010 09:55:56 -0400 Original-Received: from [140.186.70.92] (port=36302 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1OUKEi-0003FJ-Aa for help-gnu-emacs@gnu.org; Thu, 01 Jul 2010 09:55:29 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1OUKEa-0002Al-Ij for help-gnu-emacs@gnu.org; Thu, 01 Jul 2010 09:55:28 -0400 Original-Received: from lo.gmane.org ([80.91.229.12]:51013) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1OUKEa-0002AQ-DM for help-gnu-emacs@gnu.org; Thu, 01 Jul 2010 09:55:20 -0400 Original-Received: from list by lo.gmane.org with local (Exim 4.69) (envelope-from ) id 1OUKEY-00043J-35 for help-gnu-emacs@gnu.org; Thu, 01 Jul 2010 15:55:18 +0200 Original-Received: from 139.191.131.39 ([139.191.131.39]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 01 Jul 2010 15:55:18 +0200 Original-Received: from sewkokot by 139.191.131.39 with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 01 Jul 2010 15:55:18 +0200 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 34 Original-X-Complaints-To: usenet@dough.gmane.org X-Gmane-NNTP-Posting-Host: sea.gmane.org User-Agent: Loom/3.14 (http://gmane.org/) X-Loom-IP: 139.191.131.39 (Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; GTB6.5; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.help:74027 Archived-At: Hi, I would like to modify numbers in a region/buffer by a given multiplier. Imagine that I have some numbers 33.444 3333 4433.4443 3344 .34234 and I want them multiplied for example by 0.1 to receive 3.3444 333.3 443.34443 334.4 .034234 I tried with this function I wrote, but it doesn't work properly. Any idea why? (defun my-multiply-numbers-in-region-or-buffer (multiplier) (interactive "nGive multiplier: ") (let (beg end object) (if (use-region-p) (progn (setq object "region") (setq beg (region-beginning)) (setq end (region-end))) (setq object "buffer") (setq beg (point-min)) (setq end (point-max))) (goto-char beg) (while (re-search-forward "\\([0-9]*\\.?[0-9]*\\)" end t) (replace-match (format "%.3f" (* (string-to-number (match-string 1)) multiplier)))) (message "Numbers in %s modified by multiplier %s." object multiplier)))