Questions tagged [coordinates]

{coordinates} is about using coordinates in {diagrams}.

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34
votes
2answers
20k views

Problems with TikZ calculations

When can I use functions and do calculations in TikZ? How do I make this work: \draw (0,0) arc(0:90:sqrt(15)); %not ok why is this working: \draw (0,0) arc(0:asin(1):5); %ok with \usetikzlibrary{...
76
votes
4answers
72k views

TikZ: difference between \node and \coordinate?

What is the difference between \node and \coordinate in TikZ? Exchanging them does no visual effect in my (to be honest: still simple) pictures. When to use what?
24
votes
2answers
3k views

Accessing the logic values of a TikZ coordinate

In TikZ accessing the coordinate values of a node can be done using the let syntax of the calc library or using the PGF command \pgfpointanchor. However, this values are dimensions/lengths in points ...
32
votes
2answers
11k views

How can I compute the distance between two coordinates in TikZ?

Given two points (defined, for instance using nodes), I want to compute the distance between them. Is there some build in functionality in tikz to do this? If not, how can it be done using the ...
21
votes
8answers
11k views

Transform defined coordinates in TikZ

Say I have a triangle with vertices defined using \coordinate (a) at (0,0); \coordinate (b) at (1,0); \coordinate (c) at (0,1); Let us denote by T(x,y) the triangle defined by (a),(b) and (c) which ...
8
votes
1answer
583 views

Pass a 3d coordinate via pgfkeys

I'm using 3dplot to draw in 3D. Now I want to define my own environment, called pose, that is supposed to be used inside a tikzpicture-environment. It should perform a coordinate system tansformation ...
11
votes
2answers
5k views

Coordinates A, B: compute |B-A| and angle between +x and (B-A)

This question has two parts: why is the angle computed always 0 (should be 45) what is a straightforward way to compute distance between coordinates (there is How can I compute the distance between ...
1
vote
2answers
410 views

Extract, convert, store and reuse (x,y) coordinate components

On a beamer frame, I have two tikzpicture environments one below the other. Both use the axis environment with identical scaling and domains. I need to: Extract some coordinate from the picture on ...
18
votes
3answers
8k views

Draw in cylindrical and spherical coordinates

I can try to draw this in TikZ: I managed to draw the coordinate axis. The first image is in cylindrical coordinates and the second in spherical coordinates. I don't know draw in spherical coordinate ...
24
votes
3answers
11k views

Transforming coordinates, so (0,0) from tikzpicture is put in the desired place of the page

In tikz I can perform absolute positioning, e.g. (current page.center), but how I can specify/transform the coordinates, so (0,0) within tikzpicture will end in well-defined place like center of the ...
12
votes
1answer
5k views

How to draw and annotate a spherical coordinate system

For some lecture script I am preparing I would need some descriptive images showing how to work with spherical coordinates as often seen in textbooks, i.e. a globe and some descriptive arrows ...
4
votes
3answers
545 views

Tikz: Calculate and store the Euclidian distance between two coordinates

Is there an easy way to store the Euclidian distance between two coordinates? I want to store the value 4 in a macro, so that I can use it to specify the width of a node. The easiest way I could ...
4
votes
1answer
969 views

3d sphere style changes coordinates?

i took this one http://www.texample.net/tikz/examples/map-projections and rebuild or changed it for my use. This is a crosspost to: http://latex-community.org/forum/viewtopic.php?f=45&t=25078&...
22
votes
3answers
11k views

extract x value from coordinate in TikZ

maybe I'm stupid, I looked at the many examples in which somehow shows the work with the coordinates, but I don't understand it. Simple example - I have: \begin{tikzpicture} \coordinate [...
5
votes
2answers
5k views

How to make a textbox with this TikZ code ?

I made this with TikZ : \usetikzlibrary{calc} \def\banlen{3} \xdefinecolor{mycolor}{RGB}{62,96,111} % Neutral Blue \def\bancolor{mycolor} \begin{tikzpicture} \draw (0.25,0.25) rectangle (5,-2); % \...
6
votes
1answer
789 views

Problem with external graphics and 3D pgfplots

I want to include an external graphics with pgfplots. I tried to follow the instructions of the manual (p45 et seq.) as carefully as possible. But the result is hoorible as hell. Here is the code I ...
8
votes
1answer
520 views

Create a coordinate node at each point of a path

How can I create a TikZ/pgf-style that will put a coordinate, which should be named automatically, at each point of a path? So the following code \draw[put coordinates](0,0)--(3,2)--(4,7)--(-2,1); ...
6
votes
1answer
1k views

Latitude and longitude coordinates on a sphere using tikz

I am trying from Stereographic and cylindrical map projections by Tomas M. Trzeciak to reproduce the two spheres below. However, I am having hard time to understand correctly the code and so far, I ...
3
votes
1answer
346 views

How to set a user-defined coordinate system globally?

Consider an example like this drawing using a 3d perspective. The package tikz3d defines a new coordinate system 3d, and the coordinates are specified as (3d cs:1,2,3) etc. Is is possible to set the ...
16
votes
2answers
1k views

Is there a better way to do intersections and calculations with relative coordinates in TikZ?

I've been doing many TikZ diagrams lately and every so often I encounter a situation where I am forced to use some temporary coordinate in a \path. In the following short example, the problem is ...
11
votes
1answer
1k views

Curve synthesis - Adding two curves to get another one

Case 1: Let's say I have a few coordinates (A), (B), (C), (W), (X), (Y), and (Z) (possibily obtained through intersection, rotation, and whatnots). I draw two piecewise linear curves through (A), (B)...
14
votes
1answer
4k views

pgfplots - Placing Nodes on x Coordinates of a Plot

I want to plot some graphs in pgfplots and want to place nodes on the exact same x coordinate of the plot. The position of the note has to be set in x direction but free in y direction. Here is one ...
6
votes
1answer
1k views

Tikz - How to determine the coordinates in fill

How to create Candle Symbol in LaTeX I previously asked a question about making candle light and got amazing answers. To todd's answer I have another question which would help understand basics of ...
6
votes
1answer
913 views

Generalised: Accessing the logic values of a TikZ coordinate

In another question concerning Access to logic coordinates on Accessing the logic values of a TikZ coordinate I used these functions, until I came to a scaled tikzpicture and then it was off. I now ...
2
votes
1answer
852 views

Drawing on an image with TikZ using own coordinate system

I do a lot of mapping, and regularly draw on images using the scheme outlined earlier (Drawing on an image with TikZ) on a 0-1/0-1 grid. I need to produce multiple scalings of the same mappings and it ...
7
votes
2answers
2k views

Transforming “rel axis cs” to absolute coordinates?

I've got two plots arranged vertically using \matrix. I'd like to draw a vertical line, that spans over both plots with a margin of 1cm at the top and at the bottom. The starting point of the line ...
6
votes
2answers
788 views

How to extract coordinates in the current scope (before the coordinate transformation matrix is applied)

If I extract coordinates with \pgfgetlastxy{}{}, I get changing results depending on the transformations I've applied to my draw (rotation, scale): \documentclass[margin=0.5cm]{standalone} \...
4
votes
3answers
511 views

Draw a Line Between Two Points described by Trigonometric Calculations

Suppose I have two points the unit circle corresponding to 30 and 60 degrees from the x-axis. I want to draw a line between these two points. \documentclass[border=5mm]{standalone} \usepackage{tikz}...
3
votes
1answer
62 views

tikz-3dplot causes problems to let operator

I am trying to use the 3d-plot library. The plan is to define some basic 2d coordinates at the beginning and then use them to define all kind of 3d points, using the "let" operator: \documentclass{...
3
votes
1answer
1k views

how to add annotation to ybar pgfplots with symbolic x coords

I would like to add an annotation, or better, an arrow to a particular ybar in a plot, but I am struggling with the symbolic x data. I've used \pgfplotsinvokeforeach to read in variable data, and so ...
3
votes
1answer
1k views

How to locally specify function range in math expression

I'm creating simple coordinate transformation in order to define \tdplotsetcoord coordinates at Cartesian coord. system. MWE: \documentclass[a4paper,fleqn,leqno]{article} \usetikzlibrary{arrows.meta,...
2
votes
1answer
2k views

Using current path position in coordinate calculation

I often find myself writing code like this: \documentclass{article} \usepackage{tikz} \usetikzlibrary{calc} \begin{document} \begin{tikzpicture} \node (aNodeWithALongName) at (1,1) {a}; \node (...
2
votes
1answer
432 views

Using a macro inside a Tikz coordinate calculation

I am trying to create a general macro that prints a particular custom character, based on an answer to a previous question of mine. Here is a minimal (non-)working example: %!TEX encoding = UTF-8 ...
2
votes
1answer
241 views

Tikz: display coordinate of node using let command

I am creating a graph where a node is placed. I would like to display the coordinates of that node on the axes without manually entering them. I get Tikz to retrieve those coordinates using let but ...
1
vote
2answers
70 views

Get outermost coordinates/length in a Tikz-picture

From my previous question/answer Tikz image within a defined box (& the textpos package), @frougon provided a great solution. And now, I'm seeking to have a standard scaling for all of my Tikz-...
4
votes
1answer
2k views

Setting coordinate system for TiKZ picture

I'd like to use TiKZ to generate stand-alone PDF diagrams programatically. I have an application that generates simple geometry of lines and arcs etc and I'd like to create (using e.g. Ruby) TikZ ...
3
votes
4answers
4k views

Using TikZ absolute coordinates

I wonder is that possible to use absolute coordinates regarding all document? Please see my example \documentclass{article} \usepackage{tikz} \begin{document} \begin{tikzpicture} \filldraw[red] (...
23
votes
1answer
6k views

How can I express half the distance between two nodes?

I want to draw a line from node A half-way to node B in TiKZ. How can I find express the end point?
11
votes
4answers
682 views

Can tikz coordinates be exported to a text-file?

Can tikz coordinates be exported to a text file, while the document is rendered? Let the document be: \documentclass{scrartcl} \usepackage{tikz} \usetikzlibrary{calc} \begin{document} \begin{...
7
votes
1answer
5k views

How to create symbolic x coords without losing last bar

I've created a bar chart with labels for the x coordinates. But if I don't put a xmin/xmax in, only half of the first and last bar appear. If I add a xmax it shows up on the axis. \begin{figure}[...
3
votes
1answer
3k views

Rotating axes in 3D for better viewing planes

I have this code: \begin{figure}[h!] \centering % Generat amb TikZ \begin{tikzpicture} % Note: the points have coordinates (x,z,y) \coordinate (O) at (0,0,0); ...
6
votes
1answer
1k views

Extracting x, y coordinates of an arbitrary point in TiKZ while using yscale and xscale

Inspired by Extract x, y coordinate of an arbitrary point in TikZ, I am trying to use the x coordinate of a point to draw another element. However, when I use the yscale and xscale commands, the ...
5
votes
1answer
813 views

Referring to tikzpicture center

How I can refer to the current or some other tikzpicture's center? Is there anything like (current picture.center) or (previous picture.center)? I'm asking about straight solutions, not requiring to ...
3
votes
2answers
203 views

Express boxes properties in tikz coordinates

In my understanding, any LaTeX box displays such fundamental properties: .. and anything is wrapped into a LaTeX box. So, when I produce a tikz picture, it must be somehow wrapped into a box. Indeed,...
14
votes
4answers
516 views

How to create a macro with two or three ;-separated arguments?

I want to create in 2D a point with \defpoint(1;2){A} and in 3D with \defpoint(1;2;-5){A}. I prefer a solution with TeX but it would be interesting to see if LaTeX3 is useful in this situation. I ...
13
votes
2answers
1k views

How can I do an affine coordinate transformation in pgfplots?

It is possible to perform a general affine coordinate transformation in TikZ by combining the shift, x, and y keys (or just the generalized cm key to set the coordinate matrix and shift). This allows ...
9
votes
2answers
182 views

TikZ fill not being drawn using named coordinates

Is this a bug in TikZ? I'm working on an assignment which includes a number of colorful graphics, and for some reason the following code doesn't quite work as expected: \RequirePackage{luatex85} \...
8
votes
3answers
286 views

Combining calc and perpendicular coordinates in tikz

As it is described there, the following does not compile: \documentclass{report} \usepackage{tikz} \usetikzlibrary{calc} \begin{document} \begin{tikzpicture} \node at (0, 0) (node1) {Hello}; \node ...
6
votes
2answers
1k views

Linear transformation Coordinates

I want to transform the canonical coordinates system , i.e. whose basis vectors are (1,0) and (0,1): \documentclass[a4paper, 12pt]{report} \usepackage{fullpage}[1cm] \usepackage{tikz} \usepackage{...
6
votes
1answer
4k views

Circuitikz - IC circuit with relative coordinates

I've represented an IC circuit using circuitikz, but it's a bit too rough to what I prefer. In particular I would like to use relative coordinates in this case and connect them to the ``IC device'' so ...