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POLL: Math questions regarding upper elementary school (xpost to m.k.)



 
 
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Old October 20th 03, 06:35 PM
Kevin Karplus
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Default POLL: Math questions regarding upper elementary school (xpost to m.k.)

In article ,
chiam margalit wrote:
(Kevin Karplus) wrote in message ...
In article , user wrote:
Well, as someone who works in the publishing/printing industry, my
first thought was, "Interesting... but with the right data set and
a proportional font, the plot comes out totally misleading."


BEEP! You can't use stem-and-leaf plots with proportional fonts!
Mono-space fonts only!!! (Or very difficult tabular typsetting to
force each digit to have the same width.)


Wow, I didn't know this and it does have an impact on the information
I'm trying to gather, so THANK YOU!


Alan Rosenthal correctly pointed out to me by e-mail that most
proportional fonts use mono-spacing for digits, to make setting tables
of numbers easier. In fact, he challenged me to come up with a
widely-used font that did NOT have mono-spaced digits.

I looked through some font metric tables and only found a few fonts
that did not have the same width for both 0 and 1.

Several fonts of the Lucida and Lucida Bright families from Y&Y
have this problem:

yandy/lubright/lbdsc.afm:C 48 ; WX 664 ; N zero ; B 36 -12 628 548 ;
yandy/lubright/lbdsc.afm:C 49 ; WX 500 ; N one ; B 69 0 449 542 ;

yandy/lubright/lbrsc.afm:C 48 ; WX 639 ; N zero ; B 48 -12 590 542 ;
yandy/lubright/lbrsc.afm:C 49 ; WX 494 ; N one ; B 81 0 413 542 ;

yandy/lucida/lbc.afm:C 48 ; WX 664 ; N zero ; B 120 -12 651 542 ;
yandy/lucida/lbc.afm:C 49 ; WX 434 ; N one ; B 72 0 386 542 ;

yandy/lucida/lbl.afm:C 48 ; WX 533 ; N zero ; B 33 -12 500 554 ;
yandy/lucida/lbl.afm:C 49 ; WX 451 ; N one ; B 27 -6 427 554 ;

yandy/lumath/lbmdtex.afm:C 49 ; WX 623 ; N one ; B 120 0 517 729 ;
yandy/lumath/lbmdtex.afm:C 156 ; WX 624 ; N zeroslash ; B 32 -66 592 789 ;

which is somehwat surprising, as the Lucida family is one of the few
fonts that is designed to work well with the TeX math-typesetting
package.

There are undoubtedly other fonts with proportional spacing of the
digits, but we only have a small collection of font tables on the
machine I checked. The most commonly used fonts DO mono-space their
digits, even ones with enormous variation in letter widths (like Avant
Garde).

Note: this topic seems to be drifting out of the proper topic area for
mkm. I suggest that we not discuss fonts further on the newsgroup, but
(as Alan already wisely did) take any further discussions on fonts to
e-mail.

--
Kevin Karplus
http://www.soe.ucsc.edu/~karplus
life member (LAB, Adventure Cycling, American Youth Hostels)
Effective Cycling Instructor #218-ck (lapsed)
Professor of Computer Engineering, University of California, Santa Cruz
Undergraduate and Graduate Director, Bioinformatics
Affiliations for identification only.

 




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