{matrices} is about matrices in {equations} and {diagrams}.
37
votes
5answers
45k views
36
votes
8answers
4k views
Highlight elements in the matrix
I have a matrix and need to highlight some elements in the matrix. I have found how to highlight a single element (I want to put the cell in the square):
$$ A = \begin{bmatrix}
\fbox{0} & ...
29
votes
5answers
5k views
How do I label different rows or columns of a matrix using braces?
I have a matrix enclosed in brackets [ ] (or (), or {}, or |'s, or ||'s):
- a b c d -
| e f g h |
| i j k l |
- m n o p -
which I want to label like so:
R
|---|
-- - a b c d ...
27
votes
4answers
585 views
Perform matrix operations (addition, product, transpose, etc.) in LaTeX?
I know the calc package can perform infix-notation arithmetic in LaTeX... but I want more!
I'd like to perform (not necessarily infix-notation) linear-algebra operations such as scalar ...
23
votes
1answer
3k views
TikZ matrix as a replacement for tabular
I would like to use TikZ matrices to for some drawings. I am currently using nodes and positioning them manually to simulate a tabular. That helps in positioning arrows and shading.
However, if I ...
19
votes
4answers
4k views
What's the best way make an “augmented” coefficient matrix?
When studying systems of linear equations, it's nice to remind people that the last column of the coefficient matrix holds the constants. This is often done in books by putting a vertical line ...
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}
\\
...
18
votes
3answers
471 views
Matrix with labels nested in braces
What's the best way to produce a matrix with labels that are nested in braces, like this:
18
votes
2answers
2k views
Upper triangular matrix with big zero in lower triangular?
I can represent an upper trapezoidal matrix say as shown below. I would like to replace all those zeros with a single big zero that spans across the low triangle rows and columns, and maybe also add a ...
17
votes
2answers
2k views
Unknown error using tikz matrix of nodes in beamer
I am having trouble getting a basic example of a matrix of notes to show up in my beamer presentation. I am using the code copied from the pgf manual. Here is a complete working example. The error I ...
17
votes
1answer
184 views
Brackets around matrices in TikZ
I'm writing a custom package for labeled matrices using TikZ. I noticed an inconsistency in TikZ. This is best illustrated with the following MWE:
\documentclass{standalone}
\usepackage{tikz}
...
16
votes
2answers
8k views
How can I increase the line spacing in a matrix?
I'm trying to create a pmatrix whose components are rather complicated fractions (Christoffel symbols), and the line spacing is too small making the whole thing a bit cramped and hard to read.
Is ...
16
votes
3answers
1k views
How can I visualize Matrix operations?
I would like to visualize some matrix operations like that:
How can I do that (preferably something that also works for mathjax)?
16
votes
3answers
14k views
typesetting column vector
I would like to define a command which typesets a column vector.
For one vector I can have something like:
\left(
\begin{array}{c}
a\\
b\\
\end{array}
\right)
I would like the command to produce ...
15
votes
1answer
431 views
How does this macro for augmented matrices work?
I've used this code I found somewhere to typeset literally hundreds of augmented matrices, and it's been amazing:
\documentclass[a4paper,12pt]{article}
\usepackage{amsmath}
\usepackage{arydshln}
...
15
votes
3answers
2k views
Multirow/multicolumn cells in TikZ matrices?
Is it possible to make TikZ matrix cells span multiple rows/columns, like they can in LaTeX tables using \multirow/\multicolumn? Specifically, I'd like to typeset something like the following in a ...
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
5k views
Where is the \matrix command?
From what I can see, \matrix was a TeX command, but I cannot seem to find documentation on it.
It works in MathJax, so I wonder if it can be used in LaTeX.
ie this is valid MathJax:
$$
\left[
...
13
votes
4answers
533 views
Drawing Young tabloids
I would like LaTeX to produce output like the following
(without the 2 a so called Young tabloid), ideally by writing
\ytabloidshort{123,56}
(using one character per cell, ideally allowing ...
13
votes
1answer
1k views
TikZ two-blocks matrix
I would like to get a plot like the one I sketched below, basically two blocks of the same matrix with arrows going up and anti-diagonally for the red block and arrows going up for the green one. The ...
13
votes
1answer
5k views
How to typeset block matrices?
I need to typeset a block matrix that is made of a 2X2 structure of blocks such that the (1,1) block and the (2,2) blocks are zero and the (1,2) and the (2,1) blocks are non-zero (and happen to have a ...
12
votes
2answers
314 views
Print zeroes in a sparse matrix in a lighter color
For a report I need to print some sparse matrices as full matrices, so that means that there are a lot of zeroes. If I print them in the same color as the meaningful entries, it doesn't look very ...
12
votes
4answers
1k views
Draw a line through one column of a matrix
I'd like to "cancel" (draw a line through) a column of a matrix (using \begin{pmatrix}..\end{pmatrix}). How can I do this?
12
votes
2answers
74 views
vertical dotted line in column vector / amsmath matrix
I would like to typeset the following set of equations:
... but with contiguous, vertical dotted lines in the column vectors, such that the top and bottom rows of the matrix and of the vectors are ...
12
votes
1answer
1k views
Typesetting a Row Vector
In the question typesetting a column vector, a very nice solution was given for typesetting a column vector with an arbitrary number of rows. I am attempting to modify the code to produce row vectors ...
12
votes
2answers
219 views
Long dashes for denoting omitted columns of a matrix
Mathematicians would often to like to think of a row of a m by n matrix with entries from a , say, field, as a vector in the n-dimensional vector space over the field.
Though I am not a ...
12
votes
1answer
465 views
Enter matrices by columns rather than rows in TikZ
I find myself drawing a lot of quantum circuits these days, and I do them in TikZ because it produces very nice diagrams.
A quantum circuit is a lot like staff (as in music). You go from left to ...
11
votes
2answers
368 views
How can I add clips above matrix?
\documentclass{mwrep}
\usepackage{kbordermatrix}
\usepackage{amsmath}
\begin{document}
\begin{equation}
\bar{P}=
\kbordermatrix{ \mathrm{state} & 1 & 2 & 4 & 3 & 6 & ...
11
votes
2answers
3k views
How do I left-align entries in a matrix with \begin{matrix}?
I'd like to left align -1 entry in the following matrix so that the 1s line up. Is there a way to get matrices to ignore signs in that way?
\begin{matrix}
1 & 1 \\
1 & -1 \\
...
11
votes
3answers
494 views
Column sums in matrix array
I am trying to get my equation to look like the following:
I cannot seem to get anywhere close (is there a way to get labels in \bordermatrix to go at the bottom?). Here is my code so far (without ...
11
votes
3answers
2k views
Vertical vectors in angle brackets
I wanted to produce the following formula:
which is nothing but a vertical vector in angle brackets. I expected the following code to do the job:
\left\langle
\begin{matrix}
a \\
...
11
votes
1answer
245 views
How to create a matrix with 20 columns in latex
The code below works, but when I add 10 more columns, it does not. So, how can I add ten more columns to the matrix below?
\documentclass{article}
\usepackage{amsmath}
\begin{document}
...
10
votes
6answers
575 views
Labelling Ax = b under an actual Matrix
I wish to achieve the following in Latex:
| a b | x | x1 | = | b1 |
| c d | | x2 | | b2 |
A x b
Where I write the labels A, x, and b under the respective matrices. The code I'm ...
10
votes
1answer
1k views
Compiling a BIG matrix
I have a large matrix (say, 100x100) in LaTeX code and I want to view it in a human-readable form. Obviously compiling the TeX code (of the matrix and nothing else) is the best way (much better than ...
9
votes
3answers
582 views
How to highlight a single element in a matrix?
I am trying to write out the LU decomposition of a matrix A. I am able to highlight the pivot column with elements below the pivot element except when I get to the last column. Does anyone know how I ...
9
votes
3answers
176 views
Matrix from graph description
Are there any LaTeX package that draws/plots/generates a matrix from a "graph" description (node relations). Any type of description/language could be useful. The trick is to generate automaticly a ...
9
votes
2answers
201 views
Long Division with Boxes
I need to make a division worksheet for a specific student with ADHD. He often gets confused with the placement of the digits so this worksheet has to have boxes aligned in a very precise way. There ...
9
votes
2answers
1k views
Problem with defining shortcuts for TikZ matrices.
For answering a question yesterday I wanted to define a shortcut for creating a matrix inside a tikzpicture. As a minimal example, consider
\newcommand\mymatrix[1]{
\begin{tikzpicture}
...
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
3answers
1k views
Horizontal row separation line in tikz matrix (like \hline in tabular)
In this question tikz-matrix-as-a-replacement-for-tabular a nice solution was given to let the matrix in tikz behave like tabular.
In this solution cell/.style={rectangle} was used to draw lines ...
9
votes
2answers
825 views
Arrows at right angles on a tikzpicture matrix
I'm trying to do something pretty simple but haven't been able to find an answer so far. I have a flow chart and I want to draw straight arrows at right angles instead of 'bent' arrows, inside of a ...
9
votes
4answers
2k views
Diagonal dots spanning multiple lines/columns of a matrix
I'm filling in large sparse matrices, for example
\begin{bmatrix}
0 & -2 & 1 & & -1 & 2 \\
2 & \ddots & \ddots & \ddots & & -1 \\
...
9
votes
1answer
414 views
Correct delimiter height in TikZ
When using the left delimiter and right delimiter options, I am having the problem that their height is not equal to the node they are surrounding.
Here is an example:
\documentclass{article}
...
9
votes
2answers
182 views
Why is picture and matrix not drawn at the same height
I'm trying to put a adjacency matrix beneath a graph using subfloat. The graph is drawn with tikz. No matter what I do, the matrix is put below the graph as shown here:
The code is here:
...
9
votes
2answers
539 views
TikZ marking several blocks in a matrix
I would like to mark a few blocks in a matrix and I followed directions from other similar questions but I get a weird TikZ behavior .. seems that I can not have more than one marked block in a ...
9
votes
1answer
489 views
Typesetting a matrix with crossing arrows on it
I'm able to draw matrices on LaTeX but I don't know how to put crossing arrows on it as the second matrix in the figure.
I tried to make it 5 x 5 matrices and put \diagup, \diagdown on diagonals ...
9
votes
2answers
771 views
highlighting diagonal of a square matrix
I have a 3x3 eqnarray. Is there a way to highlight the diagonal with background color, perhaps using tikz? I was using tikz ellipse to highlight equation terms, though stretching the ellipse to the ...
9
votes
3answers
773 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.
9
votes
1answer
209 views
Heatmap of a triangular matrix (or a sparse matrix)
So let me first of all shamelessly steal heatmap code from this answer to Drawing heatmaps using TikZ
\documentclass{standalone}
\usepackage{colortbl}
\usepackage{pgfplots}
\usepackage{pgfplotstable}
...
8
votes
2answers
644 views
TikZ: Curve through specified points
\documentclass{standalone}
\usepackage{comment}
\usepackage{tikz,pgf}
\usetikzlibrary{fit,scopes,calc,matrix,positioning,decorations.pathmorphing}
\begin{document}
\begin{tikzpicture}
...
