{array} is an environment used in {math-mode}. It can be useful when aligning terms.
22
votes
1answer
292 views
Does \\ in the last line of an array have any effect?
Consider the following example:
\begin{array}{l}
line 1 \\
line 2 \\
\end{array}
Is the \\ in the last line completely optional or are there circumstances under which it has any effect?
20
votes
3answers
1k views
How do I create a Shidoku grid?
I can't figure out how to create a Shidoku grid using LaTeX. In other words, I am trying to have a 4x4 grid with a bold line separating the 2x2 subsquares. I have the sudoku package but it won't ...
18
votes
4answers
818 views
How can I display an array (as in the data structure from Computer Science, not the mathematical version) in LaTeX?
I'm finding this extraordinarily difficult to search for, as the mathematical meaning of "array" is much more common in LaTeX documentation. I essentially want a single row of boxes, into which I can ...
18
votes
4answers
2k views
Using display style fraction in a matrix environment
I'd like use the \dfrac command in a bmatrix environment as follows:
\documentclass{article}
\usepackage{amsmath}
\begin{document}
\[
\begin{bmatrix}
\dfrac{\partial f}{\partial x}
\\
...
14
votes
5answers
6k views
bordermatrix with blocks
I need to write a complicated matrix, that has a structure as in the attached picture.
13
votes
3answers
362 views
How to find the length of a PGF array?
A few of my macros currently require the user to pass the length of an array along with the array itself. It would be nice if the length could be calculated for them, as the user in question (myself) ...
13
votes
1answer
2k views
Multivariate polynomial long division using LaTeX
How do I typeset polynomial long division using multiple variables in LaTeX? I am hoping to be able to do polynomial long division using 2 or more divisors. Currently, the packages I am using are:
...
11
votes
2answers
260 views
Problems with alignment of sequences
I want to align two sequences:
a_1, b_1, c_1, d_1, e_1 etc.
a_2, b_2, c_2, d_2, e_2 etc.
here's what I wrote
\begin{align}
\notag &a_1,\ &b_1,\ &c_1,\ &d_1,\ &e_1\ ...
9
votes
4answers
2k views
PGF/TikZ: How to store strings in array?
I'm trying to generate a lot of name badges. I'm wondering, is it possible to store the names as strings in one array, according to the PGF manual:
...
9
votes
3answers
2k views
Convert numpy array into tabular
I am doing some data analysis in python, putting the results in form of a matrix stored into a numpy array. I would like to put this results into a report and the best way would be to put a table with ...
9
votes
4answers
215 views
How to construct a logic argument with colored hline with length under control?
How to construct a logic argument like this one?
I can construct it like this:
Latex of my argument:
\documentclass[10pt]{article}
\usepackage{newtxtext}
\usepackage{newtxmath}
...
9
votes
3answers
826 views
Problems using `\left\{` in array environment
I am trying to define a matrix in segments by enclosing the entries of the matrix in boxes, and also using the open and closed braces to label those segments. So far I have developed the following ...
9
votes
4answers
497 views
Text above matrices
I am new to latex and I am trying to create
So far I have been able to create the matrices, like so:
\[
N\textrm{ spectra}
\begin{bmatrix}
a_{11} & a_{12} & \cdots & a_{1M} \\
...
9
votes
4answers
2k views
Create an array of variables
I'm creating a package for my question papers. (I'm aware of the exam class but I don't want to use that.) I have everything ready but I want to create a grading table at the top of the first page. ...
9
votes
1answer
94 views
Using an array environment inside an xparse command
I would like to define a macro for optimization problems. My attempt is given below. I am wondering why \optimizationproblema works, but \optimizationproblemb does not (I get a "misplaced alignment ...
9
votes
1answer
171 views
What is best practice for aligning distinct arrays or tables side-by-side?
I have two related tables that could naturally be displayed side-by-side but don't have to be. However, it saves space to display them side-by-side rather than one atop the other. If I do so without ...
9
votes
3answers
764 views
Border matrix with multiple indices on top and bottom
How can I write a matrix where there is an index at the top and also at the bottom? \bordermatrix doesn't seem to have an option for multiple indices.
8
votes
3answers
187 views
Vertically Centering Text/Numbers in Rows of Array using Math Mode
I am trying to center text in an array of two rows inside a math mode environment so that the text in the second column of the array appears half way between the first and second row of the first ...
8
votes
3answers
677 views
Using \underbrace with table columns
I have the following code:
\begin{displaymath}
\begin{array}{|c|c|c|c}
p
& q
& p\lor{}q
& p\land{}q \\
\hline
0 & 0 & 0 & 0 \\
0 & 1 & 1 & 0 \\
1 & 0 ...
8
votes
3answers
579 views
Page with Symbols and Notation
I want to make a section for symbols and special notation, which should look like this:
What would you suggest in doing this? Should I just do like a table and create an array of 3 columns?
8
votes
2answers
280 views
Array cell highlighting tikz
I'm beginning to write up a PhD thesis and am pretty new to LaTeX. I'm trying to explain a numerical method I'm using and in doing this I wish to highlight sections of arrays to aid explanation. The ...
8
votes
1answer
661 views
Systems of equations with a single number
I want to write a numbered system of equations. Right now, this is what I do and I am satisfied with the output, but I have a feeling it's not the best way to do it.
\begin{equation}
...
8
votes
3answers
322 views
array within frac, using nath package
I use the nath package to get automatically-sized delimiters, but it breaks having a \begin{array}{…}…\end{array} within a \frac{}{} (simply removing the \usepackage{nath} below fixes the example, but ...
8
votes
2answers
218 views
Pretty lists for sorting algorithms
I would like to obtain easily something like in this picture so as to illustrate several sorting algorithms.
To produce one line, I would like to use one command of the following kind where the ...
8
votes
1answer
728 views
Negative Sign and Matrix Alignment
I am having trouble centering the elements of a matrix such that the negative sign is not taken into account during alignment. Additionally, I would also like the space between the left parenthesis ...
8
votes
1answer
680 views
A Matrix with labels, dashed lines
I'm trying to TeX the following matrix, from Guillemin and Pollack (1.4 #13)
The best I've been able to do is get the dashed lines with
\[ \left( \begin{array}{c:c} B & C \\ \hdashline
D ...
8
votes
1answer
134 views
Replacing Leading Minus Signs in Environment
In this question concerning negative signs and the alignment of entries in matrix environments, Heiko Oberdiek gave a great answer in which he uses a user-defined command called \matminus instead of ...
7
votes
2answers
75 views
cases environment inside an array
LyX is giving a lot of error messages for my Latex code which runs in other places.
\[
\begin{array}{rl}
p_{Y \mid H_1}(y \mid H_1) & = f_X(g^{-1}(y))\left| \dfrac{dg^{-1}(y)}{dy} \right| \\ \\
...
7
votes
3answers
1k views
Drawing Multiple Diagonal Arrows in a Table
My question is basically the same as this one, but with many arrows instead. (I'd like to see the TikZ solution--I feel like once I get it here, I'll be able to extrapolate and do it in other cases ...
7
votes
3answers
751 views
How to align piecewise functions?
I have two piecewise functions defined like this:
\begin{align*}
\left\{
\begin{array}{ll}
i = x^2 + y^2 \\
j = a^2 + b^2 \\
\end{array}
\right.
\\
\left\{
...
7
votes
4answers
131 views
Restore the original array code
The arraypackage redefines array in various ways. I was woundering if anyone had made a package containing a localized (prefixed) version of the kernel array?
I have a document were we have a simple ...
7
votes
4answers
2k views
How to align a system of multiline equations?
I've got a system of equations, each of them doesn't fit the page width, so I'm searching the way to align them so that:
the brace should appear to the left with no indentation
the first line of ...
7
votes
2answers
189 views
How to stop fractions in display equations from running into each other?
Is there some standard way to create multiple display equations like the following
without having to use:
\renewcommand*{\arraystretch}{2} (so that the two rows in the second equation don't get ...
7
votes
3answers
181 views
How can I determine the size of an array?
After a long search period, I was not able to figure out how to determine and use the len of an array like this:
\def\mar{ 1,2 }
\path let \p1=($(rec.west)-(rec.east)$),
...
7
votes
2answers
724 views
Array with labeling columns
Is there an intelligent way to label (or name) columns in a matrix? I would like to have something like
\[M=\left[\begin{array}{c|cc}
1 & 2 & 3\\
4 & 5 & 6
...
7
votes
1answer
761 views
Add more horizontal space in an array
Is there a setting I can input to the array environment, which will slightly increase the horizontal spacing between each entry?
I would appreciate it if you could test your code on the following ...
7
votes
2answers
898 views
Gaussian reduction of matrices
I have to show a Gaussian reduction in an assignment, and I was wondering what the more space-efficient and neatest way of expressing this is. I thought about using \begin{smallmatrix} (it's only a ...
7
votes
1answer
512 views
tabular and array
Consider the following example:
\documentclass{article}
\usepackage{array}
\usepackage{calc}
\begin{document}
\begin{tabular}{p{\textwidth - 3cm}|p{1cm}<{foo}}
Caption1 & Caption2\\
...
6
votes
3answers
687 views
Color a line in array
Is it possible to change a color of a single line inside an array environment?
I have an array of possible solutions and I'd like the best one to be highlighted, the array is declared like
...
6
votes
4answers
309 views
What is the best way to indicate repeated off diagonal elements in a matrix/array?
I'd like to typeset a matrix of the following kind: When the symbols involved are big, like, in place of $r$, suppose we had $\mu(k-1)$ and in place of $\lambda$, we had $\mu(k-2)$, the matrix B below ...
6
votes
2answers
95 views
Several lines of formulas to the left of one curly brace pointing to equation number
How to make several lines of equations under one curly brace from the left side, such that it point to a reference number.
Now I do something like this:
\begin{align}
\left.
\begin{array}{ll}
a = b ...
6
votes
3answers
246 views
Adding colour to table cells when decimals are aligned with arrays and {.} used in the column definition
I've got a table (below) that aligns the decimal points of my data - I wish to highlight a
value (2 adjacent cells), however this leaves a white space where the decimal point is! If I increase the ...
6
votes
3answers
95 views
aligned environment of amsmath vs array environment
Today I found out the existence of the aligned environment of the amsmath package. However, I can't see the advantage of using it instead of the array environment from the example provided in ...
6
votes
2answers
63 views
How to make frame in matrix? [duplicate]
I want to draw :
I have tried to make this by the following command :
\documentclass[11pt,twoside,openright]{book}
\usepackage{geometry,tikz,amsmath}
\begin{document}
...
6
votes
3answers
201 views
How to use data structures in TikZ?
I created a foreach statement, using expl3 and TikZ/pgf:
\documentclass{article}
\usepackage{tikz}
\setlength{\parindent}{0cm}
\usepackage{expl3}
\ExplSyntaxOn
\cs_new:Npn \Counter #1 \Stopper { ...
6
votes
2answers
159 views
Is it blkarray compatible with beamer?
When I try next code
\documentclass{beamer}
\usepackage[utf8]{inputenc}
\usepackage{blkarray}
\begin{document}
\begin{frame}{Title}
\[
\begin{blockarray}{c|c}
...
6
votes
1answer
303 views
How can I update the array package? Warning from tabu
I am trying to use the tabu package, but it returns a warning which does not seem like a good sign. Does anyone know how to resolve the following issue?
LaTeX Warning: You have requested, on input ...
6
votes
2answers
1k views
Make each column of a table have same width
I have a table as follows:
&$\begin{array}{c|cc|cc}
& x & \multicolumn{1}{c}{y} & i & 0 \\ \hline
x & 0 & \multicolumn{1}{c}{} & -49 & \\
y & ...
6
votes
2answers
523 views
Enforcing That \array Stays Square When Drawing Matrix
I'm trying to draw a block matrix in LaTeX, and this is what I have so far:
\begin{array}{|c|c|}
\hline
I_{r \times r} & 0 \\
\hline
0 & 0 \\
\hline
\end{array}
Here's a ...
6
votes
1answer
943 views
Breaking an array of equations
I wanted to break long equations in an array environment. To do this, I used dmath environment from breqn package but it did not work. How can I write long equations in an array environment with line ...
