7
votes
3answers
251 views

How to have a real random pattern?

How to have a new recalculated random pattern ? this one is the same translated everywhere. Edit I perfectly understand that the pattern is calculated once and drawn several times after. My ...
3
votes
0answers
35 views

! Argument of \pgfmathrnd@@ has an extra }

The followin code gives this error : ! Argument of \pgfmathrnd@@ has an extra }. <inserted text> \par l.12 } ? ! Emergency stop. <inserted text> ...
8
votes
2answers
578 views

How to Generate Random Variables then Use in Calculations in pdflatex

I'm basically trying to create multiple versions of a worksheet, each with different values for the variables in each question. To do this I'm defining random variables, then each time I compile the ...
8
votes
1answer
161 views

How to correctly decorate an ellipse with random steps

To create something that looks like the shape of a lake, the following code transforms the border of a blue ellipse with smooth random steps. The idea is taken from another answer. ...
7
votes
2answers
378 views

Arbitrary Ragged Curves for Phase Diagram in TikZ

How can one draw a good looking curved random line extending along a diagonal connecting two arbitrary nodes in TikZ? (Also, how do I add arrowheads like I would usually do, or do I have to create ...
6
votes
3answers
511 views

Drawing randomly ragged lines in technical drawings

I am having issues getting started on drawing a randomly ragged line, with finite variation, between two endpoints. The random function which uses variable rnd I think can be used, for instance, ...
7
votes
1answer
304 views

Randomized coordinates in TikZ

I need to draw a number of `bacteria' in TikZ. Their coordinates and orientation needs to be random within a pre-defined scope. I have randomized the orientation successfully, but not the location of ...
5
votes
1answer
257 views

Creating random patterns in TikZ

I'm interested in doing two (not completely) separate things in TikZ, if I should open another question for one part, please tell me so. What I'm interested in is: Create a random array of filled ...
3
votes
2answers
152 views

How can I make random placed edges between two graph partitions?

I have to nodes (V1) and (V2) (representing sets of graph vertices) and I want to draw, say, 10 edges(lines) between them. I don't want to hardcode random locations so I did: \begin{pgfonlayer}{bg} % ...
7
votes
1answer
281 views

Draw randomized tree in TikZ

I am trying to draw a randomized tree using TikZ, that is, I'm looking for a macro \randtree{NN}{x} that attaches a randomized tree of maximum depth x to a node named NN. The nodes need not be visible ...
4
votes
0answers
103 views

How to randomly display a word from a list of words (a random student's name of my class)? [duplicate]

Last year, I came up with a solution to randomly display the names of my students in a presentation using the package tikz. Unfortunately, I'm not a LaTeX guru, and it's far from perfect: ...
6
votes
1answer
264 views

Random 3D shape

I created a picture for a random charge distribution and it currently looks like this \documentclass{article} \usepackage{tikz} \usetikzlibrary{intersections, decorations,circuits.ee.IEC, calc, ...
4
votes
1answer
453 views

How do I generate in LaTeX a list of random questions avoiding repetitions?

How do I generate in LaTeX a list of random questions avoiding repetitions? \documentclass{article} \usepackage[pdftex]{exerquiz} \usepackage{enumitem} \usepackage{tikz} ...
2
votes
0answers
91 views

How to draw a smooth random blob with TikZ? [duplicate]

How can I draw a smooth, "natural" looking blob with TikZ? My approach \begin{tikzpicture} \draw [] (0,0)node[circle,draw,decorate,decoration={random steps,segment length=.3cm,amplitude=1cm},rounded ...
8
votes
3answers
855 views

How to draw a rectangle filled with random size circular pattern?

I wish to generate a rectangle with circular features present within (to represent water particles), something like this: Which shows that the incoming radiation decreases with distance (as ...
45
votes
1answer
1k views

Toward a Stamper Package

Imagine that you want to simulate a hand stamp on every page in some large documents. It must be an imperfect print, with random page-to-page variations in ink intensity, fading, rotation and blur. ...
31
votes
4answers
2k views

tikz: Distribute evenly and randomly circles

I want to fill a part of a picture with more or less evenly and randomly distributed circles which should not overlap. It would be okay if circles are only partly inside the shape. The density should ...
5
votes
1answer
359 views

Tikz randomly placed groups of objects

I would like to place several groups of three objects (two circle paths and one node) in a triangular area. I came up with the following code, which is based on a subdivision of the triangle in ...
13
votes
1answer
572 views

TikZ: decoration - random steps: how to get twice exactly the same shape?

I'm creating a beamer presentation, in which I use TikZ. I am making a figure, on which I would like to highlight something (using \only<> command). My figure contains an ellipse that is ...
10
votes
4answers
754 views

How to randomly shuffle a sliced image?

I have no idea to shuffle the following grids of a sliced image. How to do this in (La)TeX or PostScript level? \documentclass[pstricks,border=12pt]{standalone} \usepackage{multido} ...
4
votes
1answer
162 views

Random scale of square makes a rectangle

Why does this code generates a rectangle, not a square? \documentclass{standalone} \usepackage{tikz} \begin{document} \begin{tikzpicture} \draw[scale=rnd] (0,0) rectangle (1,1); ...
7
votes
2answers
895 views

Automatically generated BINGO cards

I am trying to automatically generate a series of BINGO cards. So, I need a 5 x 5 table with square cells that allow text wrapping. I also want to randomly assign a word to each cell from a "bank" ...
8
votes
2answers
2k views

Defining variables in TikZ

I'm trying to define random variables - for example to draw some random points of the form (r,r) when r is a random number. I tried \def\myrandomnumber{rnd}, but that seems to give me a new random ...
5
votes
1answer
1k views

Naming coordinates in a foreach loop

I have the following problem: I am using beamer together with tikz, and I want to use some random points in a drawing which is shown over a couple of slides. If I use the normal random method, the ...
8
votes
1answer
691 views

Storing the result of a random number in tikzpicture

I am drawing a surface composed of rigid "molecules" composed of three spheres each. I want to add some randomness to the surface. I have created this code: \begin{tikzpicture} \def\nuPi{3.1459265} ...
7
votes
1answer
921 views

Conditional using non-integer numbers

I am trying to generate fractals using affine transformations. I need to generate a random number in the interval (0,1), and depending on the value of this random number choose a function to ...