From mboxrd@z Thu Jan 1 00:00:00 1970 Received: (from majordomo@localhost) by pauillac.inria.fr (8.7.6/8.7.3) id TAA09899; Mon, 23 Dec 2002 19:02:42 +0100 (MET) X-Authentication-Warning: pauillac.inria.fr: majordomo set sender to owner-caml-list@pauillac.inria.fr using -f Received: from nez-perce.inria.fr (nez-perce.inria.fr [192.93.2.78]) by pauillac.inria.fr (8.7.6/8.7.3) with ESMTP id TAA10023 for ; Mon, 23 Dec 2002 19:02:41 +0100 (MET) Received: from swordfish ([216.241.35.41]) by nez-perce.inria.fr (8.11.1/8.11.1) with ESMTP id gBNI2en24857 for ; Mon, 23 Dec 2002 19:02:40 +0100 (MET) Received: from matt by swordfish with local (Exim 3.35 #1 (Debian)) id 18QWtz-00061n-00 for ; Mon, 23 Dec 2002 11:02:07 -0700 Date: Mon, 23 Dec 2002 11:02:06 -0700 From: Matt Gushee To: caml-list@inria.fr Subject: Solved (was Re: [Caml-list] OCamlplot puzzle) Message-ID: <20021223180206.GB32693@swordfish> Reply-To: Matt Gushee Mail-Followup-To: caml-list@inria.fr References: <20021223085430.GA32693@swordfish> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20021223085430.GA32693@swordfish> User-Agent: Mutt/1.3.27i Sender: owner-caml-list@pauillac.inria.fr Precedence: bulk On Mon, Dec 23, 2002 at 01:54:30AM -0700, Matt Gushee wrote: > > I am trying to learn the OCamlplot API, and as a first step I have > written a simple program that is supposed to generate a PNG image with a > single colored rectangle (see code below). Well, the output is indeed a > PNG image, but there is no colored rectangle; the image is just solid > white. And apparently the image's colorspace is a 1-bit grayscale: Apparently I was missing a call to Plot.space or Plot.fspace, e.g. .... > Plot.openpl pl; Plot.fspace pl 0. 0. 500. 400.; I didn't (and still don't) know what x- and y-values are reasonable for this function, and wasn't sure it was necessary. But apparently it is. -- Matt Gushee When a nation follows the Way, Englewood, Colorado, USA Horses bear manure through mgushee@havenrock.com its fields; http://www.havenrock.com/ When a nation ignores the Way, Horses bear soldiers through its streets. --Lao Tzu (Peter Merel, trans.) ------------------- To unsubscribe, mail caml-list-request@inria.fr Archives: http://caml.inria.fr Bug reports: http://caml.inria.fr/bin/caml-bugs FAQ: http://caml.inria.fr/FAQ/ Beginner's list: http://groups.yahoo.com/group/ocaml_beginners