{foreach} is for questions regarding the TikZ/PGF module of the same name which can also be used as a standalone package pgffor.
14
votes
3answers
301 views
How keep a running list of strings and then process them one at a time
I would like to keep track of all the \AddRef commands in a document and then process them one at a time, for instance print them in the document on one line per value. It seems that this should be ...
10
votes
1answer
2k views
TikZ \foreach loop with macro-defined list
I have a small problem with the TikZ \foreach loop whenever the list, over which we loop, is defined my a macro. The following code example will show my problem:
\documentclass{scrartcl}
...
10
votes
3answers
286 views
Macro to access a specific member of a list
I want to be able to have a macro access a specific element of a list. The following code works, however requires me to have two separate macros: one that accepts a list, and the other that accepts ...
13
votes
1answer
1k views
PGFplots foreach equivalent to TikZ's with multiple variables separated by a slash
I like TikZ's capability to traverse multiple variables separated by a slash in the foreach (as in the example below). I am looking for something equivalent in PGFplots? I saw in the documentation ...
8
votes
1answer
738 views
Foreach inside a TikZ matrix
Consider this MWE:
\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{matrix}
\begin{document}
\begin{tikzpicture}
\matrix [matrix of nodes] {
a \\
b \\
c \\
};
\end{tikzpicture}
...
15
votes
4answers
547 views
Multiple TikZ keys with foreach
Playing around with pgffor, I'm trying to slightly modify an example from the TikZ/pgf manual:
\path \foreach \x/\content/\style in {%
0/a/draw,
1/b/{draw,red},
2/c/{circle,blue},
3/d/draw%
} ...
13
votes
4answers
1k views
pgffor: Special treatment for last item in \foreach-list
Is there a way for handling the last item in a \foreach-list in a special way. An example might illustrate an application for that:
\documentclass{minimal}
\usepackage{pgffor}
\begin{document}
...
6
votes
2answers
787 views
Iterate over space-separated list
I’ll briefly explain the background in case this can be solved simpler but I’d still be interested in an answer to the actual question, too.
My chapter titles are very narrow and use a large font so ...
9
votes
3answers
423 views
Copy table row n times
I would like to copy the row of a table, let say, n times, but unfortunately my sample below does not compile. It is my understanding that the \foreach command should copy what is in its argument but ...
7
votes
1answer
649 views
what is the [count=\i] in \foreach for?
Can someone explain what does [count=\i] in a foreach mean?
Antal S-Z's answer to Fitting a list of points with TikZ and it's \foreach use this. It is also mentioned in Increment loop variable in ...
5
votes
1answer
178 views
Syntax for smoothing a coordinate plot with the foreach command
Currently implementing the solution of
Curve synthesis - Adding two curves to get another one.
I would like to smooth out the resulting curve. The present code:
% red line
\path[red,name path=one] ...
8
votes
1answer
192 views
Why do paramaters of \renewcommand need to double up the # within a \foreach
Introduction:
When you use \renewcommand within another macro or environment, one needs to double up the ## to access the parameters of the inner macro. This serves as a way to distinguish the inner ...
6
votes
2answers
935 views
How to concatenate strings, to e.g. create commands that return lists?
I was thinking about Felix' Question, where he wanted to return lists in TikZ. My approach so far was to return the single results as individual \nodes, separated one centimeter each. Now I would like ...
8
votes
2answers
361 views
Tikz foreach inside matrix
Apparently this question has been asked a hundred times already. But I couldn't get it to work with any of the answers provided.
I want to have nested for loops inside a Tikz matrix. Something like:
...
5
votes
3answers
784 views
Tikz foreach with two variables and the remember option
The question is really simple but I am a beginner in the world of tikz.
I have the following example and I am trying to simplify the connections of the nodes.
Here the working example:
...
3
votes
1answer
630 views
Iterate with `\foreach` over multiple variables and '\remember' one of them does not work as expected
I'm not so new to TikZ but am now trying something a little more advanced and am puzzled by the following problem. From researching solutions, I see that lots of good answers with good explanations ...
7
votes
1answer
345 views
Scalar field in pgfplots
I want to make a PGF plot which, besides normal 2D graph, includes scalar field, that is values of the 2D function in various positions of the 2D graph.
Of course, I tried to do that using \foreach ...
7
votes
1answer
1k views
Increment loop variable in inner foreach loop
I need the following pairs of numbers:
12 13 14
23 24
34
My first attempt was to use two nested foreach loops:
\foreach \x in {1,...,4} {
\foreach \y in {\x+1,...,4} { % This would be very easy in ...
10
votes
4answers
225 views
How to change the item separator in TikZ foreach command
I want to cycle over several sentences using a foreach loop. Now sentences will prpbably contain commas, which are used by foreach as item separators. So I would like to change the item separator to ...
8
votes
1answer
380 views
Creating a fraction graph in TikZ
Ok, so I was helping a friend of mine with a fraction problem on how to represent fractions so that they are easy to compare for children. We were thinking of a ruler and separate the ruler into ...
7
votes
1answer
180 views
TikZ \foreach loop evaluate variable using pgfmath function
I have problem with defining a new variable within the \foreach loop using the evaluate option using a pgfmath function:
\documentclass{article}
\usepackage{tikz}
\begin{document}
...
7
votes
4answers
375 views
How to create a triangle of dots in TikZ using the foreach command?
How to create a triangle of dots in TikZ using the foreach command?
I need this.
6
votes
1answer
188 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]{%
...
5
votes
1answer
181 views
Fill Nodes according to table/data file
I have a lattice of nodes generated by two \foreach commands. So each node has two numbers which define its location (essentially x and y coordinates). Is there any way to fill a circle at that node ...
5
votes
1answer
394 views
TikZ, foreach and sum
I'm trying to create a list of rectangles of various sizes, starting at the end of the previous rectangle.
I'm using a foreach loop with a TeX length, but I don't get the result I want, and I really ...
3
votes
1answer
57 views
A list of pairs in pgfkeys
Having learnt a lot about the pgfkeys package as a result of my last question, I'm now trying to do some more adventurous things.
Let's say I have a command called \blob, whose value is the ...
3
votes
2answers
282 views
binary representation of an integer
Is there a way to get a binary string of an integer calculated by e.g., \pgfmathparse{pow(2,3)} \pgfmathresult such that later on I can use the string digits in a foreach loop like .. if it is '1' do ...
11
votes
3answers
238 views
Using \foreach loop in Cubic B-spline curve refinement
This question is only about TikZ (/PGF) implementation. This is a MWE of what I want to ask for:
\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{calc}
\begin{document}
...
9
votes
1answer
146 views
\foreach has a problem with ‘initially’ argument in remember part
Is there an error in my code or did I find a bug? It seems like the \foreach statement doesn’t increase \lastn if there is an initally (value) but it works with a manually given initially value ...
7
votes
3answers
108 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 ...
7
votes
2answers
204 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?
6
votes
3answers
109 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 ...
6
votes
3answers
841 views
TikZ: Using Loop to Draw Grid of Nodes
I am trying to draw an Ising model (in my case, a grid of nodes with an undirected edge between adjacent nodes on the same row or column) using TikZ. I have the grid of nodes working nicely using a ...
6
votes
3answers
143 views
How to “demux” several aspects from a `\foreach` variable with `\ifstrequal`?
How can I "demux" several features from a mode specification given in a \foreach?
I would like to use a \foreach to draw several nodes in a TikZ picture. The loop will specify a mode for each ...
5
votes
2answers
143 views
Have \foreach restart or loop
I understand that trying to have a "loop function" like \foreach loop sounds like a paradox but I'll try to explain what I mean. Recently, I've asked a question about automatising the creation of ...
3
votes
2answers
469 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" ...
3
votes
3answers
520 views
Use TikZ foreach variable in node
This MWE
\documentclass{standalone}
\usepackage{pgfplots}
\begin{document}
\begin{tikzpicture}[scale=0.75]
\begin{axis}[ylabel=Y-Axis, xlabel=X-Axis
, xmin=2, xmax=10, ymin=0, ymax=12, ...
3
votes
2answers
163 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 ...
