Am 02.03.2010 19:42, schrieb Peter Rolf:

Hi Troy,

I don't have the graph.mp file, but I have seen similar errors here. I guess if you change the lines into

Gmargin.low:=-.07; Gmargin.high:=1.07;

things work again. Sorry, I can't remember the reason why equations cause trouble in mplib. But I'm quite sure that this is only an incompatibility and not a bug.

see http://archive.contextgarden.net/message/20091107.123912.3010813e.en.html for details. I will do the same :)

Best wishes, Peter

Am 02.03.2010 17:34, schrieb Troy Henderson:

...

The following example produces expected output with MKII (texexec) but fails the compilation process with MKIV (context).

\startuseMPgraphic{foo} input graph; path p; gdata("data.d", $, augment.p($1,$2);); draw begingraph(4in,2.5in); gdraw p; endgraph; \stopuseMPgraphic \starttext \useMPgraphic{foo} \stoptext

The data stored in data.d is as follows: 0 0 1 1 2 4

When compiling with MKIV, the following error occurs:

!mplib : mp terminal: (/opt/context-minimals/tex/texmf/metapost/base/graph.mp ! Redundant equation. <to be read again> ; l.143 Gmargin.low=-.07; % bbox fraction for default ra...

! Redundant equation. <to be read again> ; l.144 Gmargin.high=1.07; % bbox fraction for default ra...

)

!mplib : mp error: unknown, no error, terminal or log messages !mplib : mp terminal: [1]

!mplib : mp error: unknown, no error, terminal or log messages

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Am 02.03.2010 21:02, schrieb Troy Henderson:

When using

\startMPinclusions input graph; \stopMPinclusions

or not even including the MPinclusions at all (and thus not doing `input graph;') seems to give the same result. The log of what happens during the compile process is attached.

i tried your example (found graph.mp) and i got a bunch of errors regarding wrong picture color model, redundant equations and unknown transform components. #color problem is probably here def Gwithpc_(expr q) = withpen penpart q withcolor (redpart q, greenpart q, bluepart q) enddef;

...

Another difference is the way text is handled in mkiv. In particular,

color (withcolor) is not applied to metapost text. <<

#redundant equations use ':=' for constants, etc. # unknown transform components

...

(0,0,_tt_w_1,0,0,1) ! Transform components aren't all known.

is this a problem with textext()? looks very cryptic to me. anyhow, in the current form graph.mp does not work with mplib. Peter

Troy

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Am 03.03.10 21:21, schrieb Troy Henderson:

I hate to "beat a dead horse", but I want to understand this for certain. Is the consensus that graph.mp is incompatible with MKIV? If so, are there any plans to make it compatible? After all, graph.mp is part of the base MP distribution.

\usemodule[graph]? (this loads graph.mp) Wolfgang