Paul Zuurbier submitted an update to the
numodel-bundle
package.
Version: 0.10.0
License: lppl1.3c
Summary description: Numerical physics models with Forrester diagrams and
auto-sized plots
Announcement text:
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numodel-bundle v0.10.0
Write a numerical model once, and get everything a physics lesson
needs from it.
numodel lets you declare a model in LaTeX -- its variables with start
values and siunitx units, its rules, a stop condition -- and does the
rest. It computes the model (Euler integration in Lua) and typesets it
in every form teaching material uses: the text model in the notation
pupils know from their syllabus (English, or Dutch Coachtaal, with
further languages as drop-in files), the Forrester stock-and-flow
diagram, laid out automatically from the rules, and graphs of the
computed results. Because all of these come from one declaration, the
text, the diagram and the graphs can never disagree; change a start
value and every view follows.
The graphs come from numodel-plot, which is also usable on its own.
It sizes each plot to a whole number of tick intervals, writes axis
labels in the IEEE or ISO 80000-1 style, folds the power of ten of a
scaled axis into an SI prefix -- "s (km)" rather than "s (10^3 m)" --
and places the labels sensibly for one-, two- and four-quadrant plots.
New: numodel-coach -- from the text straight into Coach
-------------------------------------------------------
In many Dutch secondary schools, pupils build and run their models in
CMA Coach 7. Until now that meant retyping the model from the
textbook, where the formatted table of a PDF does not copy. The new
module numodel-coach writes the model as a Coach 7 activity:
\coachmodel{free-fall} % writes free-fall.cma7
Pupils open the file and find exactly the model of the text, ready to
run. This is more than a copy of the rules:
* The rules are translated into Coachtaal with care for where the two
languages differ. Coach gives unary minus and powers the same
priority, so -x^2 is written -(x^2); comparisons joined by AND/OR get
the parentheses Coachtaal requires; numbers get a decimal comma and
function arguments the semicolon separator; names Coachtaal does not
allow bare are put in brackets. Whatever cannot be translated
exactly is reported as a warning, never silently changed.
* Units become comments on the initial values, and every variable
appears in Coach's variable list with its unit -- and with the axis
range of its graph in the document, so a new graph in Coach looks
like the one in the text.
* An instruction text is written once in LaTeX, typeset in the PDF
where you want it and shown in Coach's instruction window as well:
paragraphs, lists, emphasis, and inline formulas with sub- and
superscripts all carry over.
* The iteration count follows numodel's maxiter setting; the file can
also be embedded in the PDF.
CMA does not document the .cma7 format. numodel-coach was developed
against files saved by Coach 7.0 and tested with Coach 7 on
Chromebooks; reports from other Coach versions are welcome.
numodel
-------
* A documented Lua interface opens the model to other tools:
numodel.get_model returns the complete model (variables, start
values, units, rules in order, stop condition, axis ranges), and
numodel.plaintext renders it as plain text in Coachtaal or the
English notation. numodel-coach is its first user.
* Fixed: \diagrammodel failed when the unit of a y-variable is a
robust command with an optional argument, such as the unit macros of
physunits.
numodel-plot
------------
* scale-format=input: a scaled axis can now keep its unit exactly as
written and put the factor in front of it ("10^3 km"), next to the
existing prefix ("Mm") and exponent ("10^6 m") forms.
* Ready for siunitx 3.6, which removes an internal that the SI-prefix
axis labels relied on; verified against siunitx 3.3.8, 3.4, 3.5 and
the 3.6 development branch.
Documentation
-------------
* The README is now written for users of the packages; each of the
three packages has its own manual.
See CHANGELOG.md for the full list.
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This package is located at
https://mirrors.ctan.org/macros/luatex/latex/numodel-bundle
More information is at
https://ctan.org/pkg/numodel-bundle
--------------------------------------------------------------------------------
Thanks for the upload.
For the CTAN Team
Manfred Lotz
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Please join a user group or donate to one, see https://ctan.org/lugs .
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