Subject: Beamer uses incorrect optical sized fonts - msg#00012

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Re: pdflatex / latex (spirale d'Ulam with tikz)

Le 6 juil. 06 à 18:36, Till Tantau a écrit : > > Am 06.07.2006 um 16:45 schrieb Alain Matthes: > >> hello:) >> >> >> The next code works well with \ulam{41}{250} http://altermundus.com/ >> ulam41_250.pdf >> >> and pdflatex >> >> but with latex and dvips there is an error : >> >> Error: /undefined in pgfo >> Operand stack: > > Hi! > > I cannot reproduce the error. Works fine for me both with pdflatex > and latex + dvips. > > Only thing I can think of is that you should either try to get the > latest CVS (though I do not know of any changes that might have > caused an /undefined in pgfo error to disappear). > > Alternatively, there might be something strange going on in the > ghostview interpreter. > > Perhaps someone else could try to reproduce this problem. Thanks for you and Jean-Baptiste, with the last version , my code compile without problem !! Alain Matthes Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642

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Re: Beamer uses incorrect optical sized fonts

Am 10.07.2006 um 17:15 schrieb Geoffrey Alan Washburn: > > I've been noticing that when I generate a presentation with Beamer > that > it doesn't actually use larger font sizes, it just makes the page much > smaller. This confuses my font configuration which selects fonts > based > on their size. So for example, it chooses "caption" sized fonts > rather > than "display" as would be expected. > > Is there any way to solve this problem without generating special > font > infrastructure just for Beamer? Thanks. Hi I'm not quite sure what a "caption" sized font is, but I think the selected font sizes are "correct" in the following sense: Suppose a presentation is given with the standard setting. This will select a "11pt" font, which is then scaled up during the presentation to, say, 10cm on the projection area. By comparison, PowerPoint or Prosper will use huge fonts at, say, 30pt which are then also scaled up during the presentation to, also, 10cm on the projection area. Obviously, neither 11pt nor 30pt is the correct "size" of the font, which, in the end, will be 10cm high on the the projection. So the question is which font size should we use so that the optimal impression is correct? Most systems use a display version (like, say, a 30pt version of the font). However, in my experience, the size of the projected area during a presention is quite small in the sense that in the viewer's eye it has about the same size as a half page at normal reading distance. Then, 11pt seems like a much appropriate optimal size for the font than 30pt since we would not like to read 30pt text scaled down to normal reading size. Anyway, the optimal size of fonts in presentation is currently largely a matter of taste, I have not yet seen any hard evidence that small optical sizes or large optical sizes make any difference with respect to the legibility of text during a presentation. Having said this, to use huge font sizes in beamer, proceed as follows: First, use, say, the 20pt or larger option to set a huge standard font (see the section on fonts and the class options in the index). Second, say \geometry{height=20cm,width=15cm} or something like that to enlarge the page. By the way, I get lots of emails saying "beamer uses fonts that are way too small, they must be much bigger (PowerPoint does this correctly, so why can't beamer?)" and emails saying "beamer uses fonts that are way too large, I cannot fit even the simplest text on my slides (an A4-page should fit comfortably, after all)". Well, the current sizes are a compormise where my students do not complain, but there does not seem to be a correct size for the fonts. After all, this also depends on the projection area, the layout of the lecture room, and so on. Hoping this helps, Till -- Prof. Dr. Till Tantau <tantau@xxxxxxxxxxxxxxxxxx> http://www.tcs.uni-luebeck.de ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642

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pdflatex / latex (spirale d'Ulam with tikz)

hello:) The next code works well with \ulam{41}{250} http://altermundus.com/ ulam41_250.pdf and pdflatex but with latex and dvips there is an error : Error: /undefined in pgfo Operand stack: Execution stack: %interp_exit .runexec2 --nostringval-- --nostringval-- --nostringval-- 2 %stopped_push --nostringval-- --nostringval-- false 1 %stopped_push 1 3 %oparray_pop 1 3 %oparray_pop 1 3 %oparray_pop 1 3 %oparray_pop .runexec2 --nostringval-- --nostringval-- --nostringval-- 2 but with \ulam{41}{196} it's fine and \ulam{41}{200} gives also a mistake Where is the problem ? Alain Matthes Thanks for you great software \documentclass[]{article} \usepackage{calc,ifthen,tikz} \newcounter{moda} \newcounter{modb} \newcounter{modr} \newcounter{a} \newcounter{div} \newcounter{stop} \newcounter{fin} \newcounter{cmptx} \newcounter{cmpty} \newcounter{cmpt} \newcounter{ind} \newboolean{reponse}\setboolean{reponse}{false} % pgcd de deux nombres \newcommand*\pgcd[2] {\setcounter{moda}{#1} \setcounter{modb}{#2} \setcounter{modr}{\value{moda}} \whiledo{\value{modr}>0} {% \setcounter{modr}{\value{moda}-\value{modb}*(\value{moda}/\value {modb})} \setcounter{moda}{\value{modb}} \setcounter{modb}{\value{modr}}}} % ce nombre est-il premier \newcommand*\prem[1] {% \setcounter{a}{#1} \setcounter{stop}{\value{a}/2} \setcounter{div}{0} \ifthenelse{\value{a}=1} {\setcounter{div}{1}} {\foreach \n in {2,...,\value{stop}} {\pgcd{\value{a}}{\n}% \ifthenelse{\value{moda}>1}{\stepcounter{div}}{}% }% }% \ifthenelse{\value{div}=0}{\setboolean{reponse}{true}}{} } \newcommand*\ballcolor[1]{% \prem{\value{cmpt}}\ifthenelse{\boolean{reponse}}{ \colorlet{colornb} {blue!50}}{ \colorlet{colornb}{red!50}}% } % spiral d'Ulam deb: #1 end: #2 \newcommand*{\ulam}[2]{% \begin{tikzpicture} \tikzstyle{every node}=[draw,circle,shade,minimum size=1cm,ball color=colornb] \setcounter{cmptx}{0} \setcounter{cmpty}{0} \setcounter{cmpt}{#1} \setcounter{ind}{1} \setcounter{fin}{#2} \whiledo{\value{cmpt}<\value{fin}} { \foreach \i in {1,...,\theind} { \ballcolor{cmpt} \draw (\thecmptx,\thecmpty) node[] {$\mathbf\thecmpt$}; \addtocounter{cmptx}{0} \addtocounter{cmpty}{1} \stepcounter{cmpt}{1} } \foreach \i in {1,...,\theind} { \ballcolor{cmpt} \draw (\thecmptx,\thecmpty) node[] {$\mathbf\thecmpt$}; \addtocounter{cmptx}{1} \addtocounter{cmpty}{0} \stepcounter{cmpt}{1} } \ifthenelse{\isodd{\thecmpt}}{\addtocounter{ind}{1}}{} \foreach \i in {1,...,\theind} { \ballcolor{cmpt} \draw (\thecmptx,\thecmpty) node[] {$\mathbf\thecmpt$}; \addtocounter{cmptx}{0} \addtocounter{cmpty}{-1} \stepcounter{cmpt}{1} } \foreach \i in {1,...,\theind} { \ballcolor{cmpt} \draw (\thecmptx,\thecmpty) node[] {$\mathbf\thecmpt$}; \addtocounter{cmptx}{-1} \addtocounter{cmpty}{0} \stepcounter{cmpt}{1} } \ifthenelse{\isodd{\thecmpt}}{\addtocounter{ind}{1}}{} } \end{tikzpicture} } \begin{document} \begin{figure} [ht] \centering \ulam{41}{250} \caption{Spirale d'Ulam à partir de 41} \end{figure} \end{document} Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642

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Re: Beamer uses incorrect optical sized fonts

Am 10.07.2006 um 17:15 schrieb Geoffrey Alan Washburn: > > I've been noticing that when I generate a presentation with Beamer > that > it doesn't actually use larger font sizes, it just makes the page much > smaller. This confuses my font configuration which selects fonts > based > on their size. So for example, it chooses "caption" sized fonts > rather > than "display" as would be expected. > > Is there any way to solve this problem without generating special > font > infrastructure just for Beamer? Thanks. Hi I'm not quite sure what a "caption" sized font is, but I think the selected font sizes are "correct" in the following sense: Suppose a presentation is given with the standard setting. This will select a "11pt" font, which is then scaled up during the presentation to, say, 10cm on the projection area. By comparison, PowerPoint or Prosper will use huge fonts at, say, 30pt which are then also scaled up during the presentation to, also, 10cm on the projection area. Obviously, neither 11pt nor 30pt is the correct "size" of the font, which, in the end, will be 10cm high on the the projection. So the question is which font size should we use so that the optimal impression is correct? Most systems use a display version (like, say, a 30pt version of the font). However, in my experience, the size of the projected area during a presention is quite small in the sense that in the viewer's eye it has about the same size as a half page at normal reading distance. Then, 11pt seems like a much appropriate optimal size for the font than 30pt since we would not like to read 30pt text scaled down to normal reading size. Anyway, the optimal size of fonts in presentation is currently largely a matter of taste, I have not yet seen any hard evidence that small optical sizes or large optical sizes make any difference with respect to the legibility of text during a presentation. Having said this, to use huge font sizes in beamer, proceed as follows: First, use, say, the 20pt or larger option to set a huge standard font (see the section on fonts and the class options in the index). Second, say \geometry{height=20cm,width=15cm} or something like that to enlarge the page. By the way, I get lots of emails saying "beamer uses fonts that are way too small, they must be much bigger (PowerPoint does this correctly, so why can't beamer?)" and emails saying "beamer uses fonts that are way too large, I cannot fit even the simplest text on my slides (an A4-page should fit comfortably, after all)". Well, the current sizes are a compormise where my students do not complain, but there does not seem to be a correct size for the fonts. After all, this also depends on the projection area, the layout of the lecture room, and so on. Hoping this helps, Till -- Prof. Dr. Till Tantau <tantau@xxxxxxxxxxxxxxxxxx> http://www.tcs.uni-luebeck.de ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642