From: Dr. Olaf Hoffmann <Dr.O.Hoffmann@gmx.de>

Date: Mon, 22 Feb 2010 15:38:00 +0100

To: www-svg@w3.org, laisznertamas@gmail.com

Message-Id: <201002221538.01259.Dr.O.Hoffmann@gmx.de>

Date: Mon, 22 Feb 2010 15:38:00 +0100

To: www-svg@w3.org, laisznertamas@gmail.com

Message-Id: <201002221538.01259.Dr.O.Hoffmann@gmx.de>

Hello, I'm already working on a proposal for a related and more general approach to present numerical data with SVG, including some transformation mechanisms to apply mathematical operations to data sets. The notation of only a mathematical formula could be interesting too, however this can be quite more complex to derive, what has to be rendered. Practically the viewer has to transform this in something than cubic Bézier curves for presentation with some assumptions how to get a proper accuracy, not necessarily a trivial problem for an arbitrary function and a simple implemented viewer. If there are any ideas how to specify this (and how to draw it), I could add such a feature to my proposal. But up to now, I'm not sure, if this is of general interest for the 'graphical community' in general to be able to draw statistical data, measurements or mathematical functions in a simple(r) way. For the 'science and technical community' we can assume, that such a module would be very helpful and could result in a dramatical increase of use of SVG in such areas with some requirements to exchange data, present and archive them in a simple enough and accessible format. Maybe to convince the SVG group to adopt such modules, more feedback from interested people would be helpful - as well as some information, who really wants to use such features. In another proposal I explored how to extent SVG to be able to draw cubic Bézier curves in polar coordinates, another possibly interesting feature - and for me it turned out, that it is relatively simple to approximate this problem with a simple script converting the curves into cartesian coordinates as available currently in SVG only. But I'm not sure, if this is of similar simplicty for arbitrary functions. And due to the things I learned at university about such mathematical functions, I'm pretty sure, that it is often not trivial to approximate all of them automatically to something consumable for simple SVG viewers... Proposal for a data presentation modul: http://purl.oclc.org/net/hoffmann/rdml/ Proposal for path data in polar coordinates: http://hoffmann.bplaced.net/svgueb/ppolar.xhtml OlafReceived on Monday, 22 February 2010 14:40:33 UTC

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