Hello!

I have tried an example:

1     \starttext
 2     This is me
 3     \startMPcode
 4          u:=0.4cm;
 5     dirlabel:=90;
 6     abscoord:=true;
 7     endlabelspace:=0.5cm;
 8          draw startlable ("S")
 9          draw tree[1][1]((-5.5u,4u)(5.5u,8u)) ("NP","","VP",""]
10   \stopMPcode
11   \stoptext 

but there is somethin wrong, because the mistake says:

Command Line:   context.exe --synctex=-1 "graphic.tex"
Startup Folder: D:\My Documents


mtx-context     | run 1: luatex 
--fmt="C:/Users/Ursula/.texlive2017/texmf-var/luatex-cache/context/a86c089b384a3076dc514ba966a1fac9/formats/luatex/cont-en"
 --jobname="graphic" 
--lua="C:/Users/Ursula/.texlive2017/texmf-var/luatex-cache/context/a86c089b384a3076dc514ba966a1fac9/formats/luatex/cont-en.lui"
 --no-parse-first-line --synctex=-1 --c:currentrun=1 
--c:directives="system.synctex=-1" --c:fulljobname="./graphic.tex" 
--c:input="./graphic.tex" --c:kindofrun=1 --c:maxnofruns=9 --c:synctex="-1" 
"cont-yes.mkiv"
This is LuaTeX, Version 1.0.4 (TeX Live 2017/W32TeX) 
 system commands enabled.

system          > synctex functionality is enabled (-1), expect runtime 
overhead!
open source     > level 1, order 1, name 
'C:/texlive/2017/texmf-dist/tex/context/base/mkiv/cont-yes.mkiv'
system          > 
system          > ConTeXt  ver: 2017.05.15 21:48 MKIV beta  fmt: 2017.8.8  int: 
english/english
system          > 
system          > 'cont-new.mkiv' loaded
open source     > level 2, order 2, name 
'C:/texlive/2017/texmf-dist/tex/context/base/mkiv/cont-new.mkiv'
close source    > level 2, order 2, name 
'C:/texlive/2017/texmf-dist/tex/context/base/mkiv/cont-new.mkiv'
system          > files > jobname 'graphic', input './graphic', result 'graphic'
fonts           > latin modern fonts are not preloaded
languages       > language 'en' is active
system          > synctex functionality is enabled (-1), expect runtime 
overhead!
open source     > level 2, order 3, name 'D:/My Documents/graphic.tex'
fonts           > preloading latin modern fonts (second stage)
fonts           > 'fallback modern-designsize rm 12pt' is loaded
metapost        > initializing instance 'metafun' using format 'metafun'
metapost        > loading 'metafun' as 
'C:/texlive/2017/texmf-dist/metapost/context/base/mpiv/metafun.mpiv' using 
method 'default'
metapost        > initializing number mode 'scaled'

tex error       > mp error on line 10 in file D:/My Documents/graphic.tex:

>> abscoord
>> true
! Equation cannot be performed (numeric=boolean).
<to be read again>
;
<*> u:=0.4cm; dirlabel:=90; abscoord:=true;
endlabelspace:=0.5cm; draw start...
I'm sorry, but I don't know how to make such things equal.
(See the two expressions just above the error message.)

>> startlable
! Improper `addto'.
<to be read again>
withpen
draw->...:also(EXPR0)else:doublepath(EXPR0)withpen
.currentpen.fi._op_
<to be read again>
(
<*> ...ue; endlabelspace:=0.5cm; draw startlable (
"S") draw tree[1][1]((-5.5...
This expression should have specified a known path.
So I'll not change anything just now.

! Extra tokens will be flushed.
<to be read again>
(
<*> ...ue; endlabelspace:=0.5cm; draw startlable (
"S") draw tree[1][1]((-5.5...
I've just read as much of that statement as I could fathom,
so a semicolon should have been next. It's very puzzling...
but I'll try to get myself back together, by ignoring
everything up to the next `;'. Please insert a semicolon
now in front of anything that you don't want me to delete.
(See Chapter 27 of The METAFONTbook for an example.)

[1]

 1     \starttext
 2     This is me
 3     \startMPcode
 4          u:=0.4cm;
 5     dirlabel:=90;
 6     abscoord:=true;
 7     endlabelspace:=0.5cm;
 8          draw startlable ("S")
 9          draw tree[1][1]((-5.5u,4u)(5.5u,8u)) ("NP","","VP",""]
10 >>  \stopMPcode
11     \stoptext
12     


?

-----Ursprüngliche Nachricht-----
Von: ntg-context [mailto:ntg-context-boun...@ntg.nl] Im Auftrag von Ursula 
Hermann
Gesendet: Donnerstag, 14. September 2017 09:47
An: 'mailing list for ConTeXt users'
Betreff: Re: [NTG-context] Metafun "Structure-Trees"

Hallo!

I have put a Document here. It is an PDF with 2 Pages. Can one look at the 
Trees and tell me how i can do this with Metapost? 

Thank you 

-----Ursprüngliche Nachricht-----
Von: ntg-context [mailto:ntg-context-boun...@ntg.nl] Im Auftrag von Alan Braslau
Gesendet: Mittwoch, 13. September 2017 20:26
An: mailing list for ConTeXt users
Betreff: Re: [NTG-context] Metafun "Structure-Trees"

What exactly do you mean?

(we can build tree diagrams with Metapost)

Alan

> On 13 Sep 2017, at 12:43, Ursula Hermann <ursula.herm...@univie.ac.at> wrote:
> 
> Hello!
>  
> My question is: Is it possible to make „Structure Trees“ for English 
> Sentences with „Categorial Grammar“? Sorry, I have no example.
>  
> Thanks
>  
> Uschi Hermann
> ______________________________________________________________________
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wiki     : http://contextgarden.net
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___________________________________________________________________________________
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://context.aanhet.net
archive  : https://bitbucket.org/phg/context-mirror/commits/
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