Hi John, Concerning your first question: It seems that are slight differences on this depending on the language and corresponding Braille code. I have seen such a table once, but can unfortunately not remember where. But perhaps this might help: "Normal" Braille standards define the dot spacing within a Braille cell to be between 2.3 and 2.5 mm, the cell to cell spacing to be 6.0 to 6.2 mm and the dot height to be 0.25 to 0.53 mm." (Gardner, J.A., 2005, Braille, Innovations, and Over-Specified Standards, Proceedings of the 2005 GOTHI (Guidelines on Tactile and Hap tic Interactions) conference, University of Saskatoon, October 24-26, 2005.) As a statistician that occasionally find myself doing work in music, I'm looking forward to the the translation of musicxml files!! All the best, t -----Original Message----- From: liblouis-liblouisxml-bounce@xxxxxxxxxxxxx [mailto:liblouis-liblouisxml-bounce@xxxxxxxxxxxxx] On Behalf Of John J. Boyer Sent: 26 February 2009 07:59 AM To: liblouis-liblouisxml@xxxxxxxxxxxxx Subject: [liblouis-liblouisxml] Implementing svg graphics As many of you know, liblouisxml already contains skeleton modules for transcribing SVG graphics, chemistry and music. I think it is now time to start fleshing out these skeletons. The most important is probably svg, since it will enable liblouisxml to produce math texts with graphs and charts. It will also be useful in portraying structural formulas in chemistry and samples of print musical notation. Here are some ideas on how graphics might be represented in liblouisxml files. Since the six-dot braille cell is of a standard size, the present cellsPerLine and linesPerPage configuration settings can be used to determine the printable area available for graphics. Margins can be handled by the drivers for individual devices. These drivers will receive liblouisxml output either as files or through a pipe. Wdpi liblouisxml will have a standard resolution, say 20 DPI and 4 levels of intensity. The drivers can convert this if necessary. Graphics will be encoded using the 64 characters from hex 21 through hex 60. The corresponding characters will be grouped into segments of length cellsPerLine, with each segment followed by end-of-line characters. Thus devices for which no drivers are abailable will print garbage instead of running off the end of lines. Graphics will be indicated by a special character sequence at the beginning. Of course, print labels inside graphics will have to be translated to braille. Just how this wil be done is not clear at rthe moment. The braille dots will of course be part of the graphic. Questions: 1. What is the size, both in centimeters and inches, of the standard 6-dot braille cell, including the spacing between cells and between lines? 2. What Open Source svg renderers are written inC, use libxml1 and might be adaptable to liblouisxml? Thanks, John -- My websites: http://www.godtouches.org http://www.jjb-software.com Location: Madison, WI, USA For a description of the software and to download it go to http://www.jjb-software.com No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.0.237 / Virus Database: 270.11.3/1970 - Release Date: 02/25/09 06:40:00 For a description of the software and to download it go to http://www.jjb-software.com