Hello I'm trying to port a big 300+ pages math course full of macros from plain XeTEX to ConTeXt mark IV (ubuntu 12.04+ stand alone beta) and I'm having some difficulties, could you please help ? My questions : 1) does lxml.att("#1","some tag") really work ? the next snipet doesn't work for me: \startluacode function set(node) p = lxml.att(node,"p") -- or p = lxml.att(lxml.id(node),"p") end \stopluacode \startxmlsetups xml:section \ctxlua{set("#1")} \stopxmlsetups it looks like it returns the p attribute of the node before #1 the following snipet works though (which is strange because I looked in the context source and it gives \def\xmlatt#1#2{\ctxlua{lxml.att("#1","#2")}}...) \startxmlsetups xml:section \ctxlua{p = \xmlatt{"#1","p"}} \stopxmlsetups 2) I'm trying to export to xml and have set \setupbackend[export=yes, xhtml=yes, css=mkiv-export.css] But a) my Metafun/Tikz pictures aren't exported to svg :/ b) the exported xml has namespaces problems (like error on line 63 at column 20: Namespace prefix m on math is not defined error on line 64 at column 22: Namespace prefix m on mrow is not defined) What am I doing wrong ? (I'm compiling with "context mydoc.tex") Is there some \csname tex4ht\endcsname command or some other directive that I should use to get my xml export right ? Am I missing some namespace commands (there are lots of m:math and m:mrow mathml tags int the exported xml source, this smells like a tex4ht issue) 3) I have defined some framed text with metafun overlays (like in the Context manual) and I'm trying to type something like \inmargin{some label} \startMyFramedText...\stopMyFramedText Yet, the text in the margin is after the framed text :( (fiddling with the "location" setting (low, ..) doesn't allow me to have the in margin text right next the top of the framed text I somehow found a dirty workaround with typing a blank space \defineframedtext[Property][frame=off,background=OverlayProperty,before={}] and \inmargin{some label}\noindent\startMyFramedText...\stopMyFramedText but it's not really satisfying. (hate to lose vertical space with wandering blank spaces) Is there a better way ? 4) I'm trying to port the following TeX code to ConTeXt $$\eqalign{x&=1\cr y&=2\cr}\qquad \hbox{haha}$$ it looks like \startformula\startalign.. doesn't allow me to do that I somehow managed to have it by typing \startformula \vcenter{\starttabular[|rM|lM|] \NC x \NC =1\NC\NR \NC y \NC =2\NC\NR \stoptabular}\qquad\text{haha} \stopformula the pdf export is fine, but the xml export is awfull (because of \vcenter I guess) a) Is there a way to use tables inside math mode alongside other stuff (would be handy) ? b) what is the correct way to type the previous text, so the pdf and xml are fine in Context ? Best regards Olivier... really enjoying utf, xml, lua inside TeX as well as other nice ConTeXt features
On Thu, 2 Aug 2012, Olivier Binda wrote:
1) does lxml.att("#1","some tag") really work ?
I don't know, but please provide a complete minimal example.
2) I'm trying to export to xml and have set
\setupbackend[export=yes, xhtml=yes, css=mkiv-export.css]
But a) my Metafun/Tikz pictures aren't exported to svg :/
Currently ConTeXt does not export Metafun/Tikz pictures to svg.
b) the exported xml has namespaces problems (like error on line 63 at column 20: Namespace prefix m on math is not defined error on line 64 at column 22: Namespace prefix m on mrow is not defined)
What am I doing wrong ? (I'm compiling with "context mydoc.tex")
Could it be a validator error? The 11th line of my test document contains:
Is there some \csname tex4ht\endcsname command or some other directive that I should use to get my xml export right ?
ConTeXt does not use tex4ht!
Am I missing some namespace commands (there are lots of m:math and m:mrow mathml tags int the exported xml source, this smells like a tex4ht issue)
See above.
3) I have defined some framed text with metafun overlays (like in the Context manual) and I'm trying to type something like
but it's not really satisfying. (hate to lose vertical space with wandering blank spaces)
Is there a better way ?
Please provide a complete minimal example.
4) I'm trying to port the following TeX code to ConTeXt
$$\eqalign{x&=1\cr y&=2\cr}\qquad \hbox{haha}$$
it looks like \startformula\startalign.. doesn't allow me to do that I somehow managed to have it by typing
\startformula \vcenter{\starttabular[|rM|lM|] \NC x \NC =1\NC\NR \NC y \NC =2\NC\NR \stoptabular}\qquad\text{haha} \stopformula
the pdf export is fine, but the xml export is awfull (because of \vcenter I guess)
a) Is there a way to use tables inside math mode alongside other stuff (would be handy) ? b) what is the correct way to type the previous text, so the pdf and xml are fine in Context ?
Why not use \startmathalign etc. See: http://dl.contextgarden.net/myway/mathalign.pdf Aditya
On Thu, 2 Aug 2012, Aditya Mahajan wrote:
4) I'm trying to port the following TeX code to ConTeXt
$$\eqalign{x&=1\cr y&=2\cr}\qquad \hbox{haha}$$
it looks like \startformula\startalign.. doesn't allow me to do that I somehow managed to have it by typing
\startformula \vcenter{\starttabular[|rM|lM|] \NC x \NC =1\NC\NR \NC y \NC =2\NC\NR \stoptabular}\qquad\text{haha} \stopformula
the pdf export is fine, but the xml export is awfull (because of \vcenter I guess)
a) Is there a way to use tables inside math mode alongside other stuff (would be handy) ? b) what is the correct way to type the previous text, so the pdf and xml are fine in Context ?
Why not use \startmathalign etc. See:
Sorry, I meant, \startmathmatrix (or \startmatrix) etc. Aditya
On Thu, 2 Aug 2012, Olivier Binda wrote:
1) does lxml.att("#1","some tag") really work ?
I don't know, but please provide a complete minimal example. \startxmlsetups xml:test \xmlsetsetup{maths}{c}{xml:*} \stopxmlsetups \xmlregistersetup{xml:test} \startxmlsetups xml:c \ctxlua{
On 02/08/2012 17:43, Aditya Mahajan wrote: title = "test="..lxml.att("#1","title") context(title)}% \stopxmlsetups \starttext test : \xmlprocessdata {maths}{<?xml version='1.0' standalone='yes?><c title="My title"></c>} {} \stoptext \endinput Context gives the "can't concatenate with a nil value" Luatex error when processing this snipet...but if I ignore the error, the pdf output is okey
On 3-8-2012 08:35, Olivier Binda wrote:
On Thu, 2 Aug 2012, Olivier Binda wrote:
1) does lxml.att("#1","some tag") really work ?
I don't know, but please provide a complete minimal example. \startxmlsetups xml:test \xmlsetsetup{maths}{c}{xml:*} \stopxmlsetups \xmlregistersetup{xml:test} \startxmlsetups xml:c \ctxlua{
On 02/08/2012 17:43, Aditya Mahajan wrote: title = "test="..lxml.att("#1","title") context(title)}% \stopxmlsetups
\starttext test : \xmlprocessdata {maths}{<?xml version='1.0' standalone='yes?><c title="My title"></c>} {} \stoptext \endinput
Context gives the "can't concatenate with a nil value" Luatex error when processing this snipet...but if I ignore the error, the pdf output is okey
the functions in the lxml namespace already print to context and return no value so you effectively appends nil which is invalid also, when used in a context run the default serializer is also piping to context so if you want otherwise you need to prefix with xml:// (which is an indication that in principle there can be many variants) here are some valid solutions (whatch the lxml.id): \startxmlsetups xml:test \xmlsetsetup{#1}{c}{xml:*} \stopxmlsetups \xmlregistersetup{xml:test} \startxmlsetups xml:c \ctxlua{title = "test=" .. xml.filter(lxml.id("#1"),"xml://./attribute(title)") context(title)} \par \ctxlua{context("test=") xml.filter(lxml.id("#1"),"./attribute(title)")} \par \ctxlua{context("test=") lxml.att("#1","title")} \stopxmlsetups \starttext \xmlprocessdata {maths} {<?xml version='1.0' standalone='yes?><c title="My title"></c>} {} \stoptext You can wikify this ... Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl -----------------------------------------------------------------
Olivier Binda wrote:
1) does lxml.att("#1","some tag") really work ?
Hans Hagen wrote: [various solutions]
You can wikify this ...
I'm looking for a place to put it, but I'm handicapped by the fact that I know nothing about ConTeXt's XML handling. I don't even know whether the question+answer is about general lxml.att usage, or a howto for some specific result. Can somebody tell me: Is the lxml namespace common and populated enough that it would be worth creating http://wiki.contextgarden.net/XML_manipulation to document the lxml.* functions, much like http://wiki.contextgarden.net/String_Manipulation documents string.* and lpeg.*, and [[table_manipulation]] documents table.*, and [[Extensions_to_the_Lua_I/O_library]] documents io.*. (Consistent page names? Maybe for Christmas (or St. Nicholas), if you're very good.) Or is there a more suitable page among the links on http://wiki.contextgarden.net/XML? Cheers, Sietse
On 3-8-2012 16:50, Sietse Brouwer wrote:
Olivier Binda wrote:
1) does lxml.att("#1","some tag") really work ?
Hans Hagen wrote: [various solutions]
You can wikify this ...
I'm looking for a place to put it, but I'm handicapped by the fact that I know nothing about ConTeXt's XML handling. I don't even know whether the question+answer is about general lxml.att usage, or a howto for some specific result. Can somebody tell me:
Is the lxml namespace common and populated enough that it would be worth creating http://wiki.contextgarden.net/XML_manipulation to document the lxml.* functions, much like http://wiki.contextgarden.net/String_Manipulation documents string.* and lpeg.*, and [[table_manipulation]] documents table.*, and [[Extensions_to_the_Lua_I/O_library]] documents io.*. (Consistent page names? Maybe for Christmas (or St. Nicholas), if you're very good.)
indeed. the lxml namespace is rather filled up and can have its own page (maybe Hans vd Meer can help with that as he has played alot with the code) Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl -----------------------------------------------------------------
On 08/03/2012 04:50 PM, Sietse Brouwer wrote:
I'm looking for a place to put it, but I'm handicapped by the fact that I know nothing about ConTeXt's XML handling. I don't even know whether the question+answer is about general lxml.att usage, or a howto for some specific result. Can somebody tell me:
Is the lxml namespace common and populated enough that it would be worth creating http://wiki.contextgarden.net/XML_manipulation to document the lxml.* functions, much like http://wiki.contextgarden.net/String_Manipulation documents string.* and lpeg.*, and [[table_manipulation]] documents table.*, and [[Extensions_to_the_Lua_I/O_library]] documents io.*. (Consistent page names? Maybe for Christmas (or St. Nicholas), if you're very good.)
Or is there a more suitable page among the links on http://wiki.contextgarden.net/XML?
Cheers,
Sietse _______
Hi Sietse, I have reorganized the XML page on the wiki a bit. The separation between mkii and mkiv wasn't visible enough, I think. It would now make sense to add a category "manipulating xml in lua code" (or something to that effect) under the mkiv heading and then add the lxml code. All best Thomas -- Prof. Dr. Thomas A. Schmitz Abteilung für Griechische und Lateinische Philologie Universität Bonn Am Hof 1e 53113 Bonn http://www.philologie.uni-bonn.de/personal/schmitz
Many thanks for the enlightening answers. The explanations about xml solved question 1 and \startmatrix\stopmatrix solved question 4. I'm now crunching xml input and handling it half in lua and half in tex (and I'm verry happy about it). I'm still struggling with a few points though (with context standalone beta on ubuntu): 3) I'm flowing text around mathematical text with graphic ornaments (overlay) but the bounding box from metapost (red) and from TeX (black) on the following minimal example aren't the same which produce all kinds of "flowing text" issues. is there a way/an option for framedtexts with overlay to get the max width/height size of the main content + overlays ? \startusableMPgraphic{myFrame} numeric o, l, m ; path a, b ; pair c ; picture d; d = textext.rt(\MPstring{Content}) ; draw (unitsquare xyscaled (OverlayWidth,OverlayHeight) shifted (-OverlayWidth/2,-OverlayHeight/2)) withpen pencircle scaled 1pt withcolor green; draw (d enlarged 2cm) withcolor red withpen pencircle scaled 2pt; draw boundingbox currentpicture withpen pencircle scaled .1mm dashed evenly withcolor blue ; \stopusableMPgraphic \defineoverlay[myOverlay][\useMPgraphic{myFrame}] \defineframedtext[myStatement][frame=off] \setupframedtexts[myStatement][backgroundcolor=lightgray,background=myOverlay,width=\textwidth,autowidth=force] \starttext \framed[fit]{\startmyStatement TEST \stopmyStatement} \stoptext 3b) I found a dirty workaround by making metapost draw the texts and the graphics (through mpstring) but then, i can't embed graphics in my Tex-text. Is there a way to have graphics inside MPstrings that goes inside metapost ? About question 2, Context doesn't produce svg okey...but tikz and metapost can produce svg. So, is there a ConteXt setup/systems calls/a (simple or not) workaround to make metapost/tikz produce svg files ? Like some script that I could run on my snipets ? I would really like to produce svg from my metapost/tikz pictures Best regards, Olivier
On Tue, 21 Aug 2012, Olivier Binda wrote:
3) I'm flowing text around mathematical text with graphic ornaments (overlay) but the bounding box from metapost (red) and from TeX (black) on the following minimal example aren't the same which produce all kinds of "flowing text" issues. is there a way/an option for framedtexts with overlay to get the max width/height size of the main content + overlays ?
Can you create a minimal example showing what you are trying to do? The following example is a bit confusing (where is \MPstring{Content} set? Why use framedtext instead of framed? What is \framed[fit] supposed to do? etc).
\startusableMPgraphic{myFrame} numeric o, l, m ; path a, b ; pair c ; picture d; d = textext.rt(\MPstring{Content}) ; draw (unitsquare xyscaled (OverlayWidth,OverlayHeight) shifted (-OverlayWidth/2,-OverlayHeight/2)) withpen pencircle scaled 1pt withcolor green;
You could also use draw OverlayBox withpen ...
draw (d enlarged 2cm) withcolor red withpen pencircle scaled 2pt; draw boundingbox currentpicture withpen pencircle scaled .1mm dashed evenly withcolor blue ; \stopusableMPgraphic
\defineoverlay[myOverlay][\useMPgraphic{myFrame}] \defineframedtext[myStatement][frame=off] \setupframedtexts[myStatement][backgroundcolor=lightgray,background=myOverlay,width=\textwidth,autowidth=force] \starttext \framed[fit]{\startmyStatement TEST \stopmyStatement} \stoptext
You can try \framed[strut=no]{...} and add \setupframedtext[...][offset=overlay]. See http://wiki.contextgarden.net/Command/setupframed for details. Aditya
Thank you for the tips. Here, I cleaned up the code some more (sorry to have left stuff over last time),. I added some explanations to make my issue clearer \startusableMPgraphic{myFrame} draw OverlayBox withpen pencircle scaled 1pt withcolor green; draw (currentpicture enlarged 2cm) withcolor red withpen pencircle scaled 2pt; \stopusableMPgraphic \defineoverlay[myOverlay][\useMPgraphic{myFrame}] \defineframedtext[myStatement][frame=off] \setupframedtexts[myStatement][background=myOverlay,offset=overlay,autowidth=force] \starttext \framed[strut=no]{\startmyStatement FIRST TEST\stopmyStatement} In the first test, I would like the black box to have the dimensions of the red box. \blank[big,big,big,big,big,big,big,big,big,big] \placefigure[left,none]{}{\startmyStatement SECOND TEST\stopmyStatement} In the second test, I'm going to demonstrate the issue by flowing text around the framed text, the green color {\em and the red color} shouldn't touch the flowing text as I want the float box to include the text box {\em and the overlay box.} Best regards, Olivier
On Wed, 22 Aug 2012, Olivier Binda wrote:
Thank you for the tips.
Here, I cleaned up the code some more (sorry to have left stuff over last time),.
I added some explanations to make my issue clearer
\startusableMPgraphic{myFrame} draw OverlayBox withpen pencircle scaled 1pt withcolor green; draw (currentpicture enlarged 2cm) withcolor red withpen pencircle scaled 2pt; \stopusableMPgraphic
\defineoverlay[myOverlay][\useMPgraphic{myFrame}] \defineframedtext[myStatement][frame=off] \setupframedtexts[myStatement][background=myOverlay,offset=overlay,autowidth=force] \starttext \framed[strut=no]{\startmyStatement FIRST TEST\stopmyStatement} In the first test, I would like the black box to have the dimensions of the red box.
\defineframed[myStatement][background=myOverlay, offset=overlay,width=fit] \dontleavehmode\framed[strut=no, offset=2cm]{\myStatement{FIRST TEST}} In the first test, I would like the black box to have the dimensions of the red box.
\blank[big,big,big,big,big,big,big,big,big,big]
\placefigure[left,none]{}{\startmyStatement SECOND TEST\stopmyStatement} In the second test, I'm going to demonstrate the issue by flowing text around the framed text, the green color {\em and the red color} shouldn't touch the flowing text as I want the float box to include the text box {\em and the overlay box.}
\placefigure[left,none]{}{\framed[strut=no,offset=2cm]{\myStatement{SECOND TEST}}} .... If needed, you can hide this behind macros: \def\startmyStatement {\framed[struct=no, offset=2cm]\bgroup\myStatement\bgroup} \def\stopmyStatement {\egroup\egroup} Aditya
On 22/08/2012 10:42, Aditya Mahajan wrote:
On Wed, 22 Aug 2012, Olivier Binda wrote:
Thank you for the tips.
Here, I cleaned up the code some more (sorry to have left stuff over last time),.
I added some explanations to make my issue clearer
\startusableMPgraphic{myFrame} draw OverlayBox withpen pencircle scaled 1pt withcolor green; draw (currentpicture enlarged 2cm) withcolor red withpen pencircle scaled 2pt; \stopusableMPgraphic
\defineoverlay[myOverlay][\useMPgraphic{myFrame}] \defineframedtext[myStatement][frame=off] \setupframedtexts[myStatement][background=myOverlay,offset=overlay,autowidth=force]
\starttext \framed[strut=no]{\startmyStatement FIRST TEST\stopmyStatement} In the first test, I would like the black box to have the dimensions of the red box.
\defineframed[myStatement][background=myOverlay, offset=overlay,width=fit] \dontleavehmode\framed[strut=no, offset=2cm]{\myStatement{FIRST TEST}} In the first test, I would like the black box to have the dimensions of the red box.
\blank[big,big,big,big,big,big,big,big,big,big]
\placefigure[left,none]{}{\startmyStatement SECOND TEST\stopmyStatement} In the second test, I'm going to demonstrate the issue by flowing text around the framed text, the green color {\em and the red color} shouldn't touch the flowing text as I want the float box to include the text box {\em and the overlay box.}
\placefigure[left,none]{}{\framed[strut=no,
offset=2cm
Thanks for the help. But I'm affraid that this won't do as I won't know/I am not supposed to know the dimensions of the bounding box of the overlay I'll use. :/ For the sake of the minimal example, I only enlarged the picture by 2cm, but in real production situations, the bounding box is going to be enlarged by random offset, because the overlay will have various parts with weird shapes (super ellipse, squeezed rectangles) that go beyond the original text boundaries (like in the Zapf frametext example of the Context manual : the title is protruding out of the main box and if you put weird stuff in there, you won't know the dimensions). I don't want to manually calculate those offsets, I would like metapost to pass it's bounding box dimensions for the overlay to context so that it automatically applies the correct offset to the text+overlay
]{\myStatement{SECOND TEST}}} ....
If needed, you can hide this behind macros:
\def\startmyStatement {\framed[struct=no, offset=2cm]\bgroup\myStatement\bgroup}
\def\stopmyStatement {\egroup\egroup}
Aditya ___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________
participants (5)
-
Aditya Mahajan -
Hans Hagen -
Olivier Binda -
Sietse Brouwer -
Thomas A. Schmitz