need help with creating a grid with context
I'm trying to layout a grid of bullets. The results isn't the expected one. Perhaps someone could offer help here? Thanks. Here's the sort of thing I'm doing .... \setuplayout[leftmargin=0pt, leftmargindistance=0pt, backspace=0pt, rightmargin=0pt, rightmargindistance=0pt, cutspace=0pt, width=middle, topspace=0pt, header=0pt, headerdistance=0pt, footer=0pt, footerdistance=0pt, bottomspace=0pt, height=middle] %\showlayout \starttext \setuppositioning[unit=cm] \startpositioning \newcount\Row \Row = 0 \loop { \newcount\Col \Col = 0 \loop \position(\Col, \Row) {$\bullet$} \ifnum\Col < 14 \advance\Col by 1 \repeat } \ifnum\Row < 36 \advance\Row by 1 \repeat \stoppositioning \stoptext IMPORTANT NOTICE: This e-mail and any attachment to it are intended only to be read or used by the named addressee. It is confidential and may contain legally privileged information. No confidentiality or privilege is waived or lost by any mistaken transmission to you. The RTA is not responsible for any unauthorised alterations to this e-mail or attachment to it. Views expressed in this message are those of the individual sender, and are not necessarily the views of the RTA. If you receive this e-mail in error, please immediately delete it from your system and notify the sender. You must not disclose, copy or use any part of this e-mail if you are not the intended recipient.
Hi Peter, MASON Peter J schrieb:
I'm trying to layout a grid of bullets. The results isn't the expected one. Perhaps someone could offer help here? Thanks.
Here's the sort of thing I'm doing ....
\setuplayout[leftmargin=0pt, leftmargindistance=0pt, backspace=0pt, rightmargin=0pt, rightmargindistance=0pt, cutspace=0pt, width=middle, topspace=0pt, header=0pt, headerdistance=0pt, footer=0pt, footerdistance=0pt, bottomspace=0pt, height=middle]
%\showlayout
\starttext \setuppositioning[unit=cm] \startpositioning \newcount\Row
\Row = 0 \loop { ^^ \newcount\Col
^^
\Col = 0 \loop \position(\Col, \Row) {$\bullet$} \ifnum\Col < 14 \advance\Col by 1 \repeat }
^^
\ifnum\Row < 36 \advance\Row by 1 \repeat \stoppositioning \stoptext
You introduce "spurious spaces" (line break sometimes adds a space) in you loops. See http://tug.ctan.org/tex-archive/info/texbytopic/ if you want to learn more about it. \starttext \setuppositioning[unit=cm] \startpositioning \newcount\Row \newcount\Col \Row=0 \dorecurse{36} {\Col=0 \dorecurse{14} {\position(\Col,\Row){$\bullet$} \advance\Col by 1 }% \advance\Row by 1 } \stoppositioning \stoptext Remove the comment sign behind the inner loop and see what happens. Also see http://wiki.contextgarden.net/System_Macros/Loops_and_Recursion for the nicer ConTeXt loop macros. Best wishes, Peter
Before printing, please consider the environment.
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2007/10/10, Peter Rolf
Hi Peter,
MASON Peter J schrieb:
I'm trying to layout a grid of bullets. The results isn't the expected one. Perhaps someone could offer help here? Thanks.
Here's the sort of thing I'm doing ....
\setuplayout[leftmargin=0pt, leftmargindistance=0pt, backspace=0pt, rightmargin=0pt, rightmargindistance=0pt, cutspace=0pt, width=middle, topspace=0pt, header=0pt, headerdistance=0pt, footer=0pt, footerdistance=0pt, bottomspace=0pt, height=middle]
%\showlayout
\starttext \setuppositioning[unit=cm] \startpositioning \newcount\Row
\Row = 0 \loop { ^^ \newcount\Col
^^
\Col = 0 \loop \position(\Col, \Row) {$\bullet$} \ifnum\Col < 14 \advance\Col by 1 \repeat }
^^
\ifnum\Row < 36 \advance\Row by 1 \repeat \stoppositioning \stoptext
You introduce "spurious spaces" (line break sometimes adds a space) in you loops. See
http://tug.ctan.org/tex-archive/info/texbytopic/
if you want to learn more about it.
\starttext \setuppositioning[unit=cm] \startpositioning \newcount\Row \newcount\Col
\Row=0 \dorecurse{36} {\Col=0 \dorecurse{14} {\position(\Col,\Row){$\bullet$} \advance\Col by 1 }% \advance\Row by 1 } \stoppositioning \stoptext
Remove the comment sign behind the inner loop and see what happens.
Also see
http://wiki.contextgarden.net/System_Macros/Loops_and_Recursion
for the nicer ConTeXt loop macros.
Best wishes, Peter
Hi, there is smarter and better solution than loop for doing this work, you can use leaders. I prefer myself xledaers in this example (alternative b). \defineoverlay[PageGrid][\PageGrid] \setupbackgrounds[page][background=PageGrid,offset=5mm] \starttext % alternative a: \def\PageGrid {\setbox\scratchbox\hbox to\dimexpr\paperwidth-1cm\relax {\leaders\hbox to 1cm{\hss$\bullet$\hss}\hfill}% \vbox to\dimexpr\paperheight-1cm\relax {\leaders\vbox to 1cm{\vss\box\scratchbox\vss}\vfill}} \page[empty] % alternative b: \def\PageGrid {\setbox\scratchbox\hbox to\dimexpr\paperwidth-1cm\relax {\xleaders\hbox to 1cm{\hss$\bullet$\hss}\hfill}% \vbox to\dimexpr\paperheight-1cm\relax {\xleaders\vbox to 1cm{\vss\box\scratchbox\vss}\vfill}} \page[empty] % alternative c: \def\PageGrid {\setbox\scratchbox\hbox to\dimexpr\paperwidth-1cm\relax {\cleaders\hbox to 1cm{\hss$\bullet$\hss}\hfill}% \vbox to\dimexpr\paperheight-1cm\relax {\cleaders\vbox to 1cm{\vss\box\scratchbox\vss}\vfill}} \page[empty] \stoptext Wolfgang
participants (3)
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MASON Peter J -
Peter Rolf -
Wolfgang Schuster