I have done something similar
in Document -> Settings -> Local Layout
[...]
Style EDD
CopyStyle Date
LabelFont
Series Bold
Color Red
EndFont
LatexName renewcommand
LatexParam {\LMP}
LabelString "LMP:"
Preamble
\newcommand\LMP[1]{#1}
EndPreamble
End
[...]
and this in Document -> Settings -> LaTeX Preamble
[...]
usepackage{luacode}
\begin{luacode*}
function gbt(refdat)
local year, month, day = refdat:match("(%d%d%d%d)-(%d%d)-(%d%d)")
local gebtermin = os.time({day = day + 283, month = month,
year = year})
local t = os.date("!%Y-%m-%d",gebtermin)
return t
end
function hpv(refdat)
local year, month, day = refdat:match("(%d%d%d%d)-(%d%d)-(%d%d)")
local w24 = os.time({day = day + 168, month = month, year = year})
local VersEnde = os.date("*t", w24)
local wdshift = {-2,-3,3,2,1,0,-1}
local sh = wdshift[VersEnde.wday]
local korrhpv = os.time({day = VersEnde.day + sh,
month = VersEnde.month, year = VersEnde.year})
local v = os.date("!%Y-%m-%d",korrhpv)
return v
end
\end{luacode*}
\newcommand\EDD[1]{\directlua{tex.sprint(gbt("#1"))}}
\newcommand\CUTOFF[1]{\directlua{tex.sprint(hpv("#1"))}}
[...]
results in this LaTeX Code
[...]
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Textclass specific LaTeX commands.
\newcommand\LMP[1]{#1}
[...]
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% User specified LaTeX commands.
\usepackage{luacode}
[...]
\newcommand\EDD[1]{\directlua{tex.sprint(gbt("#1"))}}
\newcommand\CUTOFF[1]{\directlua{tex.sprint(hpv("#1"))}}
[...]
which as you can imagine allows me to put the Date of Last Menstruation
in ISO format in the Red LMP: field in the LyX GUI and at PDF generation
\EDD{\LMP} makes the Expected Date of Delivery appear automatically
whereas \CUTOFF{\LMP} produces the Friday nearest to 24 weeks of
pregnancy.
This (accessing LUA (or even knitR) stuff from the GUI, for example) can
become extremely powerful :-)-O
el
On 26/02/2019 09:16, Kornel Benko wrote:
> Am Dienstag, 26. Februar 2019 01:35:52 CET schrieb Christian
> <cde...@gmail.com>:
>> Sorry, but I don't see how this solves the problem. This solution
>> assumes that the variable allocation is always fixed, so that loading
>> the module would be equivalent to have a set of variables
>> automatically allocated by "% some stuff to go in the preamble".
>> This is not what I was aiming for. The idea is to create some LyX
>> layout (environment, or similar, like "Author", or "Abstract"). Is
>> it possible to do it?
>
> It is exactly as Riki posted. Look for example in
> acmsiggraph-0-92.layout Style "Copyright_year"
>
> Kornel
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