[texhax] include a pdf graphics file whose name includes a varying date

[Mike Marchywka]

I'm still curious about the tex scripting options but would just point out that when apps have to 
talk to each other, it may be better to generate things like file names in one location and then share
them. Which leads me to my next comment that instead of learning all the app specific text processing
tools, you have sed and awk etc available for every application. You can write bash scripts to
generate shared variables and then have R or tex find them or even write bash scripts
that generate R and tex code. So far I've had good luck with this approach and used
variants for a java based server that needed to make use of R for some ( slow  ) queries.

You have no idea when you may have to add time zones or even go to millisecond times
for example with dates. Changing this once is a lot easier than hunting down all the clients.

Thoughts?

________________________________________
From: texhax <texhax-bounces at tug.org> on behalf of William Adams <will.adams at frycomm.com>
Sent: Wednesday, February 1, 2017 8:19 AM
To: Christopher W Ryan
Cc: TeXHaX List
Subject: Re: [texhax] include a pdf graphics file whose name includes a varying date

While David's solution (of course) works, I'm pretty sure that if you consult the documentation for the package datenumber there will be an option to enable padding with a leading zero (though it's odd to me that apparently this is turned one for days? Or have you never had to do a report during the first nine days of a month?)

William

On Tue, Jan 31, 2017 at 5:39 PM, David Carlisle <d.p.carlisle at gmail.com<mailto:d.p.carlisle at gmail.com>> wrote:
\ifnum\thedatemonth<10 0\fi\thedatemonth

David

On 31 January 2017 at 22:33, Christopher W Ryan <cryan at binghamton.edu<mailto:cryan at binghamton.edu>> wrote:
> I'm resurrecting a thread from back in October (month 10--two digits--this
> is of consequence).  My challenge was this:
>
> I am using R and Sweave and MikTeX on Windows 7.  I use this workflow
> to generate a recurring report quarterly. Same report, just new data.
>
> The R code generates a graph, saving it as a pdf file, the filename
> including the system date., like this:
>
> <timeseriesplot, results=hide, echo=FALSE>>=
> # make the major graph
> pdf(file=paste("
> NaloxoneUseEMS-timeseriesplot-", Sys.Date(), ".pdf",
> sep=""), height=8, width=12)
> ## bunch of R code in here to create a graph
> dev.off()
> @
>
>
>   Each time I run the report, the name of the saved pdf file changes, to
> match the system date. I want to include the
> most current graph in my pdf output.
>
> William Adams kindly provided this excellent solution:
>
> \documentclass{article}
>
> \usepackage{datenumber}
>
> \begin{document}
>
> NaloxoneUseEMS-timeseriesplot-\thedateyear-\thedatemonth-\thedateday
>
> \end{document}
>
>
> Which worked very well for a while.  But now that it is January (month 1, or
> 01, and there is the crux of the problem) it no longer does.  Here is part
> of the latex error message that provides a clue:
>
>
> ERROR: LaTeX Error: File `ERROR: LaTeX Error: File `ERROR: LaTeX Error: File
> `NaloxoneUseEMS-timeseriesplot-2017-1-31' not found.
>
>
> So it appears that the Latex package datenumber is searching for the
> graphics file called
>
>
> NaloxoneUseEMS-timeseriesplot-2017-1-31.pdf (which of course does not exist)
>
>
>
> whereas my R code is creating the graphics file called
>
>
> NaloxoneUseEMS-timeseriesplot-2017-01-31.pdf (which was successfully created
> and is sitting in the proper directory.)
>
>
> Can I make datenumber use 2 digits for \thedatemonth?
>
>
> Thanks.
>
>
> --Chris Ryan
>
>
>
>
>
>
>
>
>
> On Fri, Oct 14, 2016 at 3:15 PM, Christopher W Ryan <cryan at binghamton.edu<mailto:cryan at binghamton.edu>>
> wrote:
>>
>> William--
>>
>> Fantastic! Thanks!
>>
>> --Chris
>>
>> On Fri, Oct 14, 2016 at 2:43 PM, William Adams <will.adams at frycomm.com<mailto:will.adams at frycomm.com>>
>> wrote:
>> > \documentclass{article}
>> >
>> > \usepackage{datenumber}
>> >
>> > \begin{document}
>> >
>> > NaloxoneUseEMS-timeseriesplot-\thedateyear-\thedatemonth-\thedateday
>> >
>> > \end{document}
>
>
>
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