The Museum of HP Calculators

HP Forum Archive 19

 How to use a formula in a postMessage #1 Posted by Thomas Klemm on 8 Nov 2010, 4:22 p.m. A LaTeX-tag would be cool: $e^{i\pi}+1=0$  This would be displayed as: $e^{i\pi}+1=0$ Best regards Thomas

 Re: How to use a formula in a postMessage #2 Posted by Norman Dziedzic on 8 Nov 2010, 5:24 p.m.,in response to message #1 by Thomas Klemm Wow, brings back memories. I used to know TeX by heart and a good amount of LaTeX as well. I was in college when it first came out. This one lady at the computer center was just gaga over it. Another consideration may be MathML. I thought it was dead but it looks like they just updated it... http://www.w3.org/Math/

 Re: How to use a formula in a postMessage #3 Posted by bill platt on 8 Nov 2010, 5:36 p.m.,in response to message #1 by Thomas Klemm Perl is a unix routine. How do I run that on my wodoze machine?

 Re: How to use a formula in a postMessage #4 Posted by Thomas Klemm on 8 Nov 2010, 6:05 p.m.,in response to message #3 by bill platt Quote: How do I run that on my wodoze machine? You may install strawberryperl or activeperl. Use a file for the formula instead of the here-document: perl -MURI::Escape -ne 'chomp; printf "[img:http://latex.codecogs.com/png.latex?%s]\n\n", uri_escape $_' formula.txt  There might be other utilities to uri-escape. HTH Thomas I can't test that right now, but the following should work. Create a file "uri-escape.pl" with your favorite text-editor and enter the following lines: use URI::Escape; while (<>) { chomp; printf "[img:http://latex.codecogs.com/png.latex?%s]\n\n", uri_escape$_; }  Create a 2nd file "formula.txt". It may contain several formulas each on a separate line: e^{i\pi}+1=0  Now run in a command prompt: perl uri-escape.pl formula.txt 

 Re: How to use a formula in a postMessage #5 Posted by Egan Ford on 9 Nov 2010, 10:17 a.m.,in response to message #1 by Thomas Klemm If you are too lazy to upload images you can use aamath for "a-text": $echo "e^(i*pi)+1=0" | aamath __ i || e + 1 = 0$ echo "sum([n-1;r],r = 0 .. min(n-1,4))" | aamath min(n - 1, 4) ===== \ / n - 1 \ > | | / \ r / ===== r = 0  Edited: 9 Nov 2010, 10:20 a.m.

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