Placing a figure with a command for the file in mkiv

Placing a figure with a command for the file in mkiv

[Otared Kavian]

Hi all,

I have a document (sort of proceedings of a meeting) which have to contain several pages, with each page dedicated to an author and a specific figure (say a photo). In mkii I used to do have a command like
	\define\authorpicture{hacker.jpg}
and then use a command like:
	\externalfigure[\authorpicture]
to include that figure in the text, and everythinng worked ver nicely in my big document.

Unfortunately this scheme does not work anymore in mkiv… 
How can I change the following code (which works in mkii) in order to have it work in mkiv?

Thanks in advance for any help: OK

%%% begin dynamic-filename-figure.tex
\starttext
\define\authorpicture{hacker.jpg}

\placefigure[here][fig:Myfigure]{}
	{\externalfigure[\authorpicture]}
	
\stoptext
%%% end dynamic-filename-figure.tex
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Re: Placing a figure with a command for the file in mkiv

[Wolfgang Schuster]

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> Otared Kavian <mailto:otared@gmail.com>
> 27. Januar 2018 um 11:28
> Hi all,
>
> I have a document (sort of proceedings of a meeting) which have to 
> contain several pages, with each page dedicated to an author and a 
> specific figure (say a photo). In mkii I used to do have a command like
> \define\authorpicture{hacker.jpg}
> and then use a command like:
> \externalfigure[\authorpicture]
> to include that figure in the text, and everythinng worked ver nicely 
> in my big document.
>
> Unfortunately this scheme does not work anymore in mkiv…
> How can I change the following code (which works in mkii) in order to 
> have it work in mkiv?
>
> Thanks in advance for any help: OK
>
> %%% begin dynamic-filename-figure.tex
> \starttext
> \define\authorpicture{hacker.jpg}

\defineexpandable\...{...}

Wolfgang

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Re: Placing a figure with a command for the file in mkiv

[Otared Kavian]

> On 27 Jan 2018, at 11:43, Wolfgang Schuster <schuster.wolfgang@gmail.com> wrote:
> […]
> \defineexpandable\...{…}

Hi Wolfgang,

Thanks again! Indeed 

	\defineexpandable\authorpicture{hacker.jpg}

solves the problem in the simplified case I was reporting. 
However in the real case, the file « hacker.jpg » is in fact a file which depends on other variables, and when I include \defineexpandable in the \getvariable environment then it does not work anymore: saying

	\defineexpandable\authorpicture{\getvariable{talk}{picture}}
or
	\defineexpandable\authorpicture{\expanded{\getvariable{talk}{picture}}}
or
	\defineexpandable\authorpicture{\expandafter\getvariable{talk}{picture}}
does not solve the problem.

Below is a minimal example showing the issue (with what you taught me last week…).

Best regards: OK

\starttext
\startbuffer[pagetalk]
	\starttabulate[|f{\bi}l|p|][before=]%
	\NC Speaker \EQ \getvariable{talk}{speakerfirstname} {\sc \getvariable{talk}{speakername}}
	 \NC\NR
	\NC Title   \EQ \getvariable{talk}{title}    \NC\NR
	\stoptabulate
	\defineexpandable\authorpicture{\getvariable{talk}{picture}}
	\placefigure[here][]{}
		{\externalfigure[\authorpicture]}
\page
\stopbuffer

\setvariable{talk}{set}{\getbuffer[pagetalk]}

\setvariables[talk]%
	[speakername={Hacker},
	title={Up to date hacking},
	picture=hacker.jpg
	]
	
\stoptext
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Re: Placing a figure with a command for the file in mkiv

[Wolfgang Schuster]

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> Otared Kavian <mailto:otared@gmail.com>
> 27. Januar 2018 um 12:31
>
>
> Hi Wolfgang,
>
> Thanks again! Indeed
>
> \defineexpandable\authorpicture{hacker.jpg}
>
> solves the problem in the simplified case I was reporting.
> However in the real case, the file « hacker.jpg » is in fact a file 
> which depends on other variables, and when I include \defineexpandable 
> in the \getvariable environment then it does not work anymore: saying
>
> \defineexpandable\authorpicture{\getvariable{talk}{picture}}
> or
> \defineexpandable\authorpicture{\expanded{\getvariable{talk}{picture}}}
> or
> \defineexpandable\authorpicture{\expandafter\getvariable{talk}{picture}}
> does not solve the problem.
>
> Below is a minimal example showing the issue (with what you taught me 
> last week…).
>
> Best regards: OK
>
> \starttext
> \startbuffer[pagetalk]
> \starttabulate[|f{\bi}l|p|][before=]%
> \NC Speaker \EQ \getvariable{talk}{speakerfirstname} {\sc 
> \getvariable{talk}{speakername}}
> \NC\NR
> \NC Title \EQ \getvariable{talk}{title} \NC\NR
> \stoptabulate
> \defineexpandable\authorpicture{\getvariable{talk}{picture}}
> \placefigure[here][]{}
> {\externalfigure[\authorpicture]}

You can put the \getvariable command in \externalfigure.

\startplacefigure[location=here]
   \externalfigure[\getvariable{talk}{picture}]
\stopplacefigure

> \page
> \stopbuffer
>
> \setvariable{talk}{set}{\getbuffer[pagetalk]}
>
> \setvariables[talk]%
> [speakername={Hacker},
> title={Up to date hacking},
> picture=hacker.jpg
> ]
You’re missing a coma after “picture=hacker.jpg” which results in “jpeg ”
(which a space at the end) as file extension for the image.

Wolfgang

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Re: Placing a figure with a command for the file in mkiv

[Otared Kavian]

> On 27 Jan 2018, at 12:39, Wolfgang Schuster <schuster.wolfgang@gmail.com> wrote:
>> […]
> […]
> You’re missing a coma after “picture=hacker.jpg” which results in “jpeg ”
> (which a space at the end) as file extension for the image.

Yes indeed this was the issue… In fact I had tested « picture={hacker.jpg} » without the comma and that one also did not work, while with a comma as in « picture={hacker.jpg}, » the filename is well understood.

Many thanks and best regards: OK

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___________________________________________________________________________________