1
vote
1answer
46 views

\pgfdeclareshape: how to define anchors in a loop?

I think my question is quite similar to this and this, however I didn't manage to modify the provided solutions to fit my problem. In the following MWE I am trying to define 8 pin anchors in a ...
2
votes
0answers
52 views

Passing an array type argument for new command

I've looked around and can't seem to find anywhere, but I was wondering if there is somewhere you can do something like the following: \newcommand{\loopy}[1]{ \begin{tikzpicture} \foreach ...
3
votes
1answer
29 views

Using \pgfplotsinvokeforeach in foreach loop

I am trying to run a \pgfplotsinvokeforeach loop in a \foreach loop to plot the variables var1_roll1 - var1_roll10 in one plot and var2_roll1 - var2_roll10 in another. Both loops work fine ...
4
votes
1answer
80 views

Using knitr, beamer, and /foreach to produce unique section titles in pdf from R string variable

Using R, knitr, and beamer, I have created a pdf that contains a graph for each school in our district. I read in each graph using the \includegraphics command within a /foreach loop. I want to ...
3
votes
1answer
67 views

Build tabular content via \foreach

I am trying to build up tabular data using the solution at How do I use the ampersand (&) inside a foreach or conditional (or other group/environment) when building tables?, but not having any ...
4
votes
1answer
58 views

TikZ: issue with lines in foreach loop

\documentclass[tikz]{standalone} \usetikzlibrary{calc} \begin{document} \begin{tikzpicture} \coordinate (h) at (0, 3); \coordinate (O) at (0, 0); \draw (O) -- +(-3, 0); \draw[-latex] (O) -- ...
5
votes
1answer
73 views

\foreach not behaving in axis environment

Am hesitant to ask yet one more embarrassing question, but I can't seem to see the problem with the \foreach in the MWE. It should produce several horizontal lines but only produces the one with the ...
7
votes
1answer
59 views

How to add a \global before \pgfmathsetmacro?

It seems that one can't add \global before a \pgfmathsetmacro as that yields: You can't use a prefix with `\begingroup'. But that is the functionality I need here. I am trying to compute the ...
7
votes
2answers
108 views

\foreach from 1 to 1 [duplicate]

How to make a command (without testing) that contains a foreach loop that may count from 1 to 1 if necessary ? \documentclass{minimal} \usepackage{tikz} \newcommand{\boucle}[1]{% \foreach \x in ...
6
votes
3answers
203 views

How can I get these two nested \foreach loops to work?

I try to use nested \foreach loops to create edges between many nodes. \documentclass{standalone} \usepackage{tikz} \begin{document} \begin{tikzpicture} \node (a) at (0, 1) {}; \node (b) at (0, ...
5
votes
2answers
158 views

How to get the number of elements in a \foreach loop?

Does the PGF command \foreach provide a simple possibility to get the number of elements iterated? It has a parameter count to hold the current element number, so a workaround is to iterate the list ...
3
votes
1answer
106 views

Xparse macro with optional parameter breaks value for PGF foreach

I write a document class and want to execute something a certain number of times, depending on a user-defined quantity. So I thought I'd use a foreach loop from PGF together with accessor macros: ...
2
votes
1answer
87 views

Conditional assignment in a loop

Objective: I want to compile the temporary.tex file containing PSTricks code twice. One with -jobname=Rotated and the other one with -jobname=Unrotated. The resulting Rotated.ps will be passed to ...
5
votes
3answers
439 views

Nested lists in \foreach loop in TikZ

I want to draw a bunch of nodes with different styles (a, b, ...) at different points (named 00, 01, ...). I am using the following code: \foreach \n/\lst in { a/{00, 14, 20, 34}, b/{01, 11, 23, ...
2
votes
2answers
310 views

TikZ: drawing an evolution of an ellipse to a hyperbola with the same focus

Is there a high speed way to draw the evolution of an ellipse, to a parabola, and then into a few hyperbolas with the same focus? From the picture, we see that we start out with three elliptical ...
8
votes
1answer
297 views

TikZ: Automating a process with a for loop instead of coding in each piece

I am positive I could create the incoming hyperbolas and then the deflections by the planet by hand for each one, but how the image is set up conjures up the felling this could be done through ...
8
votes
2answers
305 views

StrSubstitute for multiple replacements in a loop?

I am trying to replace multiple keywords using \StrSubstitute inside a loop using foreach - but unable to accumulate all the results. The result of each \StrSubstitute call is getting lost inside the ...
2
votes
2answers
157 views

What is the correct way to generate notation for a finite set using for loop in Latex?

I am trying to create a command that will take an index n as a parameter, and generate the the expanded form of this {a_1, a_2, a_3,...,a_n}. For my first attempt, I tried to use the syntax suggested ...
6
votes
3answers
144 views

Expansion issue when adding to CSV list from within a \foreach

Another expansion issue that I am unable to guess at the correct combination of \edef/\expandafters to get to work. Background: Below I have defined \AddToCommaSeparateList which uses \g@addto@macro ...
7
votes
3answers
164 views

Defining commands using two loops

I would like to define a series of command using two loops. For instance I want to create a series of variables that can have YY or NN as subscripts. I would like to define commands \yy and \nn that ...
4
votes
2answers
746 views

TikZ: Drawing the same data with scatter plots and parallel coordinates

I am new to TikZ and trying to recreate the following image (which was created in R): (Translation: correlation = +1, correlation = -1, two clusters, circle, normal distribution) Each "column" ...
6
votes
1answer
290 views

How to define macros in a foreach loop with effects between iterations and after the loop without using global?

Without using \global, the following code: \documentclass{minimal} \usepackage[T1]{fontenc} \usepackage{tikz} \usepackage{etextools} \newcommand\appendbyforeach[2]{% ...
8
votes
2answers
388 views

Getting last value in tikz foreach

I tried this, but it doesn't work as intended: \foreach \x/\index in {4/0,5/1,19/2} { \ifnum \index > 0 % use lastx \fi \pgfmathsetmacro\lastx{\x} } How do I set \lastx properly?
2
votes
3answers
198 views

Process Last Item in \ForEach (forarray package)

The following command of the forarray package \ForEach{,}{\thislevelitem(\the\thislevelcount) : }}{x,y,z} produces the output x(1) : y(2) : z(3) : I want to have the same output without the last ...
3
votes
2answers
221 views

\DTLdeletedb (from datatool package) has no effect within \foreach

This question led to a new feature in a package: datatool \DTLgdeletedb is available in (v2.13) and later. I am trying to use a \foreach loop to iterate over a few items. For each iteration ...
6
votes
1answer
518 views

Problem setting a flag inside a TikZ `\foreach` loop

I'm pulling my hair out trying to understand why the following doesn't work. The intention is to calculate whether a given number #1 is prime, and to set \isprime to either 1 (true) or 0 (false). The ...
7
votes
1answer
602 views

Using \Alph on \foreach loop argument

Here's basically what I try to do: \begin{tikzpicture} \foreach \x in {1,2,3,4,5} { \draw (\x,1) node{\Alph{\x}}; } \end{tikzpicture} However if I do that, I get ERROR: Missing number, ...
7
votes
3answers
998 views

How to get the list of predefined colors in xcolor such that the list can be used in foreach looping?

I need to get the list of predefined colors in xcolor. Hard-coding as follows is not a good coding practice. \documentclass[dvipsnames,cmyk]{minimal} \parindent=0pt \usepackage{pstricks} ...
8
votes
2answers
264 views

Preparing macro content in a loop (calling \foreach from \edef)

I need to do something like \def\MyArray{{1, 2, 3, 4}} but with a dynamical number of elements. The following command makes the string: \newcommand{\MakeArray}[1]{\{ 1 \foreach \x in {2, ..., #1}{ , ...
7
votes
1answer
809 views

Generating tables with \@for command

I'm making a report template that requires the list of authors to be presented in several different ways, one of which is a table that lists each author and provides a space for them to sign the ...
6
votes
2answers
4k views

How to use parameter numbers and \foreach

Is there a way to use the TikZ \foreach command to do operations with parameters? E.g. I would like to be able to write (just a silly example): \newcommand{\foo}[9]{ \foreach \x in{1,2,...,9}{ ...
3
votes
1answer
342 views

Are there list building macros in PGF/Tikz?

In Mathematica, C# linq, or other languages, we can use auxiliary functions to produce list of certain pattern. For example: In Mathematica, we can use Table[] or Range[] to produce a list of ...
3
votes
2answers
486 views

Unexpected tikz/counter behaviour

What I've been trying to do, futilely, is to use the foreach[counter=\xi] x in {1,2,3} statement in tikz/pgf with LaTeX. This fails, every time. Whatever. So I moved on to trying to use a counter, ...