From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.comp.tex.context/74508 Path: news.gmane.org!not-for-mail From: Hans Hagen Newsgroups: gmane.comp.tex.context Subject: Re: Getting changing/random graphics? Date: Thu, 16 Feb 2012 10:48:28 +0100 Message-ID: <4F3CD0EC.9080306@wxs.nl> References: Reply-To: mailing list for ConTeXt users NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; Format="flowed" Content-Transfer-Encoding: 7bit X-Trace: dough.gmane.org 1329385759 7291 80.91.229.3 (16 Feb 2012 09:49:19 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Thu, 16 Feb 2012 09:49:19 +0000 (UTC) Cc: Mari Voipio To: mailing list for ConTeXt users Original-X-From: ntg-context-bounces@ntg.nl Thu Feb 16 10:49:14 2012 Return-path: Envelope-to: gctc-ntg-context-518@m.gmane.org Original-Received: from balder.ntg.nl ([195.12.62.10]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1Rxxxg-0001bW-JY for gctc-ntg-context-518@m.gmane.org; Thu, 16 Feb 2012 10:49:12 +0100 Original-Received: from localhost (localhost [127.0.0.1]) by balder.ntg.nl (Postfix) with ESMTP id D3019CB24A; Thu, 16 Feb 2012 10:49:11 +0100 (CET) X-Virus-Scanned: Debian amavisd-new at balder.ntg.nl Original-Received: from balder.ntg.nl ([127.0.0.1]) by localhost (balder.ntg.nl [127.0.0.1]) (amavisd-new, port 10024) with LMTP id NT8KkpH8Pvpa; Thu, 16 Feb 2012 10:49:06 +0100 (CET) Original-Received: from balder.ntg.nl (localhost [127.0.0.1]) by balder.ntg.nl (Postfix) with ESMTP id 06112CB239; Thu, 16 Feb 2012 10:49:06 +0100 (CET) Original-Received: from localhost (localhost [127.0.0.1]) by balder.ntg.nl (Postfix) with ESMTP id 65A2ACB239 for ; Thu, 16 Feb 2012 10:49:04 +0100 (CET) X-Virus-Scanned: Debian amavisd-new at balder.ntg.nl Original-Received: from balder.ntg.nl ([127.0.0.1]) by localhost (balder.ntg.nl [127.0.0.1]) (amavisd-new, port 10024) with LMTP id z0mFVnPbUkHG for ; Thu, 16 Feb 2012 10:48:45 +0100 (CET) Original-Received: from filter5-til.mf.surf.net (filter5-til.mf.surf.net [194.171.167.221]) by balder.ntg.nl (Postfix) with ESMTP id 31EACCB238 for ; Thu, 16 Feb 2012 10:48:44 +0100 (CET) Original-Received: from smtp.ziggozakelijk.nl (D57D1DA2.static.ziggozakelijk.nl [213.125.29.162]) by filter5-til.mf.surf.net (8.14.3/8.14.3/Debian-5+lenny1) with ESMTP id q1G9mhmR002354 for ; Thu, 16 Feb 2012 10:48:44 +0100 X-Default-Received-SPF: pass (skip=loggedin (res=PASS)) x-ip-name=10.100.1.100; Original-Received: from [10.100.1.100] (unverified [10.100.1.100]) by pragma-net.nl (SurgeMail 5.3h2) with ESMTP (TLS) id 13431-1713362 for multiple; Thu, 16 Feb 2012 10:48:34 +0100 User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:10.0.1) Gecko/20120208 Thunderbird/10.0.1 In-Reply-To: X-Authenticated-User: hagen@controller-9 X-Bayes-Prob: 0.0001 (Score 0, tokens from: @@RPTN) X-CanIt-Geo: ip=213.125.29.162; country=NL; region=11; city=Den Haag; latitude=52.0833; longitude=4.3000; http://maps.google.com/maps?q=52.0833,4.3000&z=6 X-CanItPRO-Stream: uu:ntg-context@ntg.nl (inherits from uu:default, base:default) X-Canit-Stats-ID: 0HGyxMI38 - 1ef5295ce9c1 - 20120216 (trained as not-spam) X-Scanned-By: CanIt (www . roaringpenguin . com) on 194.171.167.221 X-BeenThere: ntg-context@ntg.nl X-Mailman-Version: 2.1.12 Precedence: list List-Id: mailing list for ConTeXt users List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: ntg-context-bounces@ntg.nl Errors-To: ntg-context-bounces@ntg.nl Xref: news.gmane.org gmane.comp.tex.context:74508 Archived-At: On 16-2-2012 07:43, Mari Voipio wrote: > Hello all, > > I'm trying to do something that should be possible and I think > "variables" is the answer, I just can't figure out how. > > I have a pile of photos (jpg) in a directory and the assumption is > that they are all the same size and there's a spot for the photo on a > layer at the top of the page. I already found out how I can get > ConTeXt to draw the layer separately for each page (at > http://wiki.contextgarden.net/layers#Use_dynamic_content), but I think > I need a "variables for dummies" page... > > This time I'm not too picky, the images can be used randomly or in the > order they are in the directory and then cycled, I'd just like to use > more than one (and I'm so not doing every page by hand). > > > So, if I have > > photo1.jpg > photo2.jpg > photo3.jpg > photo4.jpg > > > and \dorecurse{10}{insert random photo here}, how do I do it? More fancy ... \startluacode local files = { } function document.collectgraphics(pattern) files = table.merged(files,dir.glob(pattern)) files = table.unique(files) table.sort(files) logs.report(string.format("graphics: %s",table.concat(files," "))) end function document.choosegraphics() if #files > 0 then context(table.remove(files, math.random(1,#files)) or "dummy") else context("dummy") end end \stopluacode \def\CollectGraphics[#1]{\ctxlua{document.collectgraphics("#1")}} \def\ChooseGraphic {\ctxlua{document.choosegraphic()}} \CollectGraphics[*.png] \CollectGraphics[*.jpg] \starttext \dorecurse {10} { \expanded{\externalfigure[\ChooseGraphic][width=4cm]} } \stoptext ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl ----------------------------------------------------------------- ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________