{matrices} is about matrices in {equations} and {diagrams}.

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9
votes
1answer
909 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} ...
7
votes
2answers
3k views

braces on the sides of an easybmat matrix

I created the following matrix with easybmat, and I would like to add at the bottom (respectively right) something like an underbrace (resp. "rightbrace") under each of the two blocks, together with a ...
6
votes
3answers
145 views

Striking out matrix lines and columns: is Tikz the only way?

I would like to show a matrix with "strike-out lines" on some of its rows and columns. After some research I found a solution using Tikz matrices, which I reproduce here: \documentclass{article} ...
5
votes
1answer
5k views

How to create a matrix with rows and columns labeled (at the right side)?

I would like to create a matrix with rows and columns being labeled. I would like the matrix elements to be right aligned, the row labels being displayed to the right of the matrix, and the column ...
4
votes
3answers
2k views

TiKZ matrix of objects

I am drawing diagrams which consist of grids, some cells of which are filled with circles, like this: I created this picture with \begin{tikzpicture}[scale=0.6] \draw[shift={(0.5,0.5)}] (0,0) ...
6
votes
1answer
1k views

vertical lines in matrix using tikz package

my problem is interconnected to my two previous posts (here and here) and i've tried to incorporate answers into solution but without success. My task is this matrix multiplication with added ...
6
votes
1answer
3k views

Write elements above and right outside the matrix

I found writing matrix's code is a boring work. There is one, you can see in pic below. Can anybody help?
5
votes
1answer
193 views

Strech the text to the borders of a node by using \hfill

The text inside the nodes is not streched to the right side of the node by using \hfill. Could it be the reason that it doesn't work with font=\tiny? But I need the text that small and I would like ...
4
votes
1answer
103 views

Error when using tikz \node, \subnode

In the code below, building off solutions found here, I am trying to use the \node and \subnode options to draw the arrow, but I cannot get the file to compile. Can you help me to fix the code to get ...
3
votes
1answer
124 views

Highlighting in tabular environment

I am trying highlight a row of matrices in a tabular environment. However, the left brackets of the matrices are gone. And I don't know how to fix this. In addition, how can I highlight 2 elements ...
18
votes
1answer
2k 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 ...
22
votes
2answers
62k views

3 dots in matrix

I was wondering if anyone knew how to draw 3 dots in a matrix that go in a diagonal way usually to represent that element flow similarily in the slots. I know there's one that goes in the bottom right ...
12
votes
1answer
950 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} ...
10
votes
2answers
2k 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 ...
26
votes
2answers
13k 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 ...
14
votes
1answer
6k views

matrix in a matrix

I would like to draw a matrix with top left, top right, bottom left and bottom right blocks. The top left should be a 3x3 matrix with numerical entries, the top right is 0, the bottom left is 0 and ...
14
votes
4answers
10k views

How to construct a confusion matrix in LaTeX?

A confusion matrix looks like: Is there an easy way to do the same using LaTeX? Otherwise I could just create a diagram with any software.
10
votes
3answers
3k views

Underbrace in a matrix

I want to display the structure of a matrix as shown in the image below: Can this be done using pmatrix and \underbrace? My attempt at combining pmatrix and \underbrace results in a compile error. ...
8
votes
1answer
396 views

Formatting an array of complex numbers with pgfplotstable

Say I have two csv files representing the real and imaginary part of a complex matrix. I would like to nicely display this matrix in LaTeX. The difficulty is to correctly round numbers and not ...
12
votes
2answers
690 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 ...
11
votes
1answer
6k 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 ...
11
votes
2answers
805 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 & ...
4
votes
2answers
6k views

Cannot insert multirow within multicolumn

I want to make a matrix that incorporates both multirow and multicolumn. However the code doesn't work. Sorry if the question is stupid, I am playing with matrices the whole day and probably I am ...
3
votes
1answer
415 views

How can I add size of Tikz drawing into size of equation? (PART 2)

Related to: - How can I add size of Tikz drawing into size of equation? Code presented below is the result of combining code from solutions to: - How can I add clips above matrix? - How can I add some ...
15
votes
2answers
5k 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
633 views

Squares in Matrix

I would like to write a matrix equation, where the matrix contains equally sized coloured blocks on the diagonal. Something like: Does anyone have any idea how to go about this?
8
votes
2answers
3k views

braces over matrix

I want to make an overbrace and a side brace on my matrix in order to indicate its size. How can I achieve that. \begin{pmatrix} 1 & 1 & 0 & .& . & . & 0 & 1 \\ 0 ...
6
votes
2answers
1k views

How to modify a node in TikZ when using beamer's overlays

I have a matrix initialized with some colors and no values. With the help of beamer's overlays I wanted to modify the matrix in the next step, changing some of the colors and inserting some values. I ...
3
votes
3answers
3k views

Specify dimensions of block matrices in Latex

I recently started learning LaTeX and though I found answers for almost all of my questions by looking online (and especially here), there is still one more thing I would like to be able to do but ...
9
votes
3answers
700 views

TikZ Matrix - How can I align content horizontally which is spanning over multiple cells/rows?

I'd like to finetune the big rectangle in the last column and its content, i.e. that it's all aligned to the third column's center. It is currently too far on the right: So far I have been unable ...
8
votes
1answer
8k views

How to label a line created with draw command

I have the following: \begin{tikzpicture} \matrix (m) [matrix of math nodes, row sep=1em, column sep=3em]{ \quad & a_1 & \quad \\ b & a_2 & \{ a_1, a_2 \dots a_n \} \\ ...
7
votes
5answers
331 views

Dimensions of parts of a matrix

I have a matrix containing the values 0 and 1. The first column contains n_1 values of 1 and the rest is 0. The second column begins with n_1 values of 0, n_2 values of 1 and then 0 for the rest. I ...
6
votes
3answers
2k views

Plot a matrix of real values with TikZ/PGF like imshow in matlab

How can I plot a matrix of real values with TikZ/PGF such that it looks like plotted with imshow in MATLAB? \addplot3 does something similar, but I'd like to have that in a color-coded 2D plot.
5
votes
1answer
631 views

Highlighted Matrix with brackets

I would like to produce the matrix as shown in this figure: At the moment, I have this code: \documentclass{article} \usepackage{tikz} \usetikzlibrary{matrix} \begin{document} ...
4
votes
2answers
229 views

Removing the Bracket from the First Line of bmatrix

How can I write a matrix with a header line that is not bracketed? I have used the following code to produce the results below. In addition of being ugly, it is impractical when I need to align the ...
4
votes
1answer
2k views

Create a block matrix with four quadrants

I want to create a block matrix of this form: But Block A should be a diagonal matrix with 1 on the diagonal, the other blocks should be B, C and D like in the picture. But the size of each block ...
1
vote
1answer
98 views

Highlight matrix cell and have arrows pointing from cell with text [duplicate]

This code is building from the solutions posted here. I am trying the approach suggested from the duplicate solutions. I am having two issues: I am not sure how to get the arrow to point to the ...
13
votes
4answers
5k views

How to create diagonal matrix with an aligned diagonal?

How do I display truly diagonal matrices? I want to have a diagonal bloc matrix. The solution below has several problems : the diagonal terms aren't really aligned in the first half, and the diagonal ...
8
votes
2answers
912 views

Equation with Large Matrix Dimension

I'm trying to code this matrix equation below, I'm not an expert in latex, but I've been successful dealing with other matrix equations. However with this one, I can't achieve it. The alignment of ...
6
votes
2answers
246 views

Insert matrix into \subsection{}?

I was trying to insert matrix into a \subsection{}: \subsection{Suppose $X= \begin{array}{cc} 1 & 2 \\ 3 & 4 \end{array}$} This gives me an error: ! TeX capacity exceeded, sorry [input ...
6
votes
1answer
4k views

How to add dash lines in Matrix [duplicate]

I would like to know how to add dash lines in Matrix (see figuge) Cheers S.L. \documentclass{article} \usepackage{amsmath} \begin{document} \begin{equation} \begin{bmatrix} N & B_i \\ B_i^T ...
6
votes
1answer
350 views

Gauss package: gmatrix not equivalent to corresponding amsmath environment

The following quote is taken from the gauss package documentation: The package defines a new matrix environment gmatrix which behaves just like Latex's and AMS-Latex's matrix. But when using ...
6
votes
1answer
7k views

Compact block matrix

I'm trying to create a block matrix and surely there are hundreds of question about those already. But most of what I read so far, seems quite hackish in the end. What I have is: ...
6
votes
2answers
5k views

Putting a tabular in a node within a matrix

I have a picture in which each of the nodes looks something like this: \node (species1) [shape=rectangle,draw] { \begin{tabular}{c c c} \multicolumn{3}{c}{{Species 1}} \\ \colorbox{red}{G1a} ...
6
votes
3answers
1k views

Same height for list of comma-separated vectors

I am trying to typeset a list of vectors spanning a multidimensional space, using the notation span{v_1,v_2,...,v_n} (I haven't found out how to inline it as rendered latex) i.e.: span \{ ...
5
votes
2answers
422 views

Matrix doesn't shrink when put in fraction.

This is my minimal example, the problem is the different size of the two x. I would expect the matrix to be shrunken too, but it isn't. Why is this and how is it corrected? ...
4
votes
1answer
1k views

Matrix with rows and columns labeled

It is trivial to make matrices like so: \begin {pmatrix} s & t & a \\ c & k & x \\ cha & n & ge \end {pmatrix} It is not so trivial to impose labels on the rows and columns ...
4
votes
1answer
699 views

Wrong (too much) vertical space above \vdots in small matrix

If one uses \vdots in a smallmatrix-environment the vertical spacing above the dots is too large. It is the same spacing as in a normally sized matrix-environment. Minimal working example: ...
4
votes
1answer
17k views

Problem putting matrix operations in an equation [duplicate]

Possible Duplicate: Errors in matrix equation? I'm trying to use official equation container for the first time, and it's giving me some trouble. I have this equation of a simple matrix ...
3
votes
1answer
1k views

Parentheses size around matrix

I would like to get 1:n matrix with \left, \right size parentheses. Default size looks not so good. Now I have $\begin{pmatrix} f_0 & \ldots & f_L \end{pmatrix}^T$ The view I get I can ...