{parameters} is about the meaning, and the manipulation of fundamental parameters that guide the typesetting of LaTeX.

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6
votes
2answers
867 views

Turning parts of text on and off

Is there a way to turn certain parts of the text on and off in LyX/Latex ? I'm thinking of having something like an environment (lets call it "TL" for "traffic light") and a parameter t such that if ...
27
votes
6answers
2k views

Spirograph, Continuous Rotations in TikZ or PSTricks

Spirograph-like drawings are obtained when one repeatedly draws a closed curve on a continuously rotated canvas. Is there a nice way to make spirograph drawings using TikZ or PSTricks? There is a nice ...
5
votes
3answers
351 views

What's wrong with my newcommand?

I defined a question macro, then made it successively fancier. Right now, three macro should define a short hand for the following: \section{Questions} \begin{enumerate} \item Q1... \item Q2... ...
3
votes
2answers
2k views

Length parameter for vertical skip space in a math environment?

I learned here that I can use \\[<len>] to explicitly set the vertical skip space between lines, e.g., <len> set to 3ex. I'd like to set <len> to, say, 2-times the normal length in ...
14
votes
2answers
391 views

Macro to take a character as argument, make it active, then \def it.

I have a XeLaTeX document in which I want some unicode symbols to be auto-substituted, like ¼ → 1/4, » → >>, « → <<. But instead of a long list like \catcode`\¼=\active\def¼{1/4} ...
20
votes
3answers
3k views

Extract first & last characters of macro argument?

In LaTeX, how do I extract/isolate/determine the first and last characters of a macro argument? Specifically, in the case I'm dealing with, the argument happens to be a base-10 integer (call it N). ...
20
votes
1answer
3k views

Passing \newenvironment parameters to the end block?

I am attempting to construct a new environment which will allow me to format arbitrary list types (itemize, enumerate, description etc.) with the new environment. As such I am passing it as a ...
7
votes
1answer
162 views

Using arara to compile powerdot twice

I want to compile my powerdot presentation twice -- once with, once without notes. I am trying to achieve this using arara with something like: % arara: latex { set \powerdotmode=slides here } % ...
7
votes
2answers
5k views

variable-name \newcommand with parameters within another \newcommand

In "Defining a newcommand, with variable name, inside another newcommand" we learned how to use \newcommand within a command definition with another \newcommand, when the name of the inner command ...
10
votes
2answers
350 views

tikz, conditional setting of shape parameters

In my illustration I use simplified sketches of stopwatches (timers), which appear in three different "modes": (1) start of interval (coloured green), (2) time in progress (yellow), and time is ...
5
votes
1answer
559 views

Package PGF Math Error: Sorry, an internal routine of the floating point unit

This type of error (! Package PGF Math Error: Sorry, an internal routine of the floating point unit got an ill-formatted floating point number ...) arises when trying to use a predefined list for the ...
10
votes
1answer
3k views

Parameter Stack Size Error with graphicx

I'm trying to include a graphic in a document, and no matter how I try to manipulate the graphicx package, I have never been able to make an image appear. I have tried making the image PNG, PDF, and ...
14
votes
2answers
400 views

TeX Parameter Processing imitating key-value pairs

I am thoroughly confused by this answer to How to generate n points on a circumference and connect all of them while having constraints on the image size as I don't understand how the parameter ...
9
votes
1answer
150 views

Parameters in a caption

I have a simple figure with a code like this: \begin {figure}[htbp] \centering % \begin{tikzpicture} [scale=1] \def \r {1/4} % y-scaling % % PARAMET. \def \a {1} %x^6 \def \b {-6} ...
7
votes
1answer
373 views

Storing unexpanded macro definitions (including #1, #2, …) for later use (now includes full usecase)

Preliminary Info I'm working on a new LaTeX package to make scoping more flexible. To do this I'll be capturing and reintroducing user defined commands behind the scenes. (For a comprehensive ...
2
votes
2answers
100 views

Keeping underscores in parameters even inside NewEnviron environments

I followed this answer to define a command such that underscores in its parameter can be kept. However, this does not work if the command is called inside an environment that has been defined with ...
12
votes
2answers
335 views

Passing parameters to \g@addto@macro

I'm a complete newbie but have a little background in programming. I've been looking at a MWE located here provided by Yiannis Lazarides. In the macro definition, we have %% add an image to the DB, ...
4
votes
1answer
1k views

How to pass two parameters to a \newenvironment?

I have defined this new environment for handling my images in my document I want to pass two parameters: #1 to refer to pathname to the imagefile #2 to refer to the string I want to pass to the label ...
1
vote
0answers
696 views

pgfplotsinvokeforeach using parameter [closed]

The following code works in the minimal example but not in my document \documentclass{article} \usepackage{tikz} \usepackage{pgfplots} \begin{document} \pgfplotsinvokeforeach{1,2,...,10} { ...
0
votes
1answer
2k views

Start TeXstudio portable in multiple instances

I use TeXstudio portable and want to use it in multiple instances when double clicking a .tex or .txss file. The necessary starting parameter is described here, but I do not know how to use it. Do you ...