Questions tagged [plot]

{plot} is for questions concerned with plotting data or functions using TeX. For questions specific to the pgfplots package, use the {pgfplots} tag.

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8
votes
1answer
2k views

How to project a function over a 3D plane

When I looked up the method to express two variable functions as a sequence of intersecting horizontal planes, I thought to use PGFplots to construct a simple set of "slices" of a generic function (...
8
votes
1answer
3k views

error bar colors in scatter plot

A data file contains four columns: x, y, error on y, class. class is an integer which I feed to scatter src so i get a graph that has different colors for different classes. However, the error bars ...
8
votes
1answer
321 views

TikZ — joining a plot and a line segment

Is there a way to join a plot and a line segment in TikZ? Here is a shape I'm trying to draw: I almost happy with the result, but there is a gap between the plotted segment and the rest of the ...
8
votes
1answer
154 views

How to skip a ticklabel on a tkzAxe?

The picture below shows my problem: I want to skip the "2" on the x_2-axis. How can I do that? Here's the corresponding code: \documentclass[11pt,a4paper]{article} \usepackage{tkz-euclide} \...
8
votes
3answers
800 views

How to speed up a large plot?

I have a large plot. It is a big file and it renders slowly. What is the best method to slim it down without loosing to much of its visual properties ? I know that PDF and PS support cubic splines. ...
8
votes
1answer
683 views

proper tool for charts in tex

I have scanned data graphics in a large ms written in TeX (of course). For copyright reasons I need to redraw these. My publisher may (sadly) decide not to use my source directly, so will need access ...
8
votes
1answer
4k views

Import selected data from .txt in tikz

Like I said in the title, I struggle with the import of data. The experimental data, that I get, is in a .txt file and has the following structure: xxxxxxxxxxx yyyyyyyyyyy zzzzzzzzzzz N a b ...
7
votes
2answers
383 views

Why does a plot of a reciprocal function using pgfplots look wrong?

I am trying to plot the function 1/x^2 but the result is obviously wrong, here is how it looks like here is the code \begin{center} \begin{tikzpicture} \begin{axis}[ %xlabel=$x$, %...
7
votes
3answers
413 views

Which plotting tool is more likely to stay stable in the basics: MetaPost, PStricks or pgfplots?

I have been looking at the three (major ?) tools---MetaPost, PStricks or pgfplots for plotting data together with LaTeX. My experience is this: MetaPost code can demand lots of lines for simple codes;...
7
votes
3answers
2k views

Plotting the sign function

I'd like to create a graph of the sign function in my document: using pdfplots and tizkpicture (as used here). Could you please let me know how to define the function in the addplot part? \...
7
votes
5answers
3k views

Tangents to a circle from a point outside of it (tikz)

I'm trying to plot in TikZ the two tangents to a fixed circle passing through a given point. In some details, given an arbitrary circle centered at C with with radius r, and a point P outside of the ...
7
votes
2answers
866 views

drawing smooth path through symmetric points, gives non symmetric curve

I want to make a graphic going through some points. I've choose the points symmetric, to have a symmetric curve, but the curve is not. I could define some extra points, but their must be a better ...
7
votes
1answer
310 views

Strange behavior of abs(x) in PGF Plots

I have the following code: \begin{tikzpicture} \begin{axis} [ axis lines = {center}, width = {0.6\linewidth}, ylabel = {$y$}, xlabel = {$x$}, ytick ...
7
votes
1answer
2k views

plotting the sequence x_n using tikz

I want to plot the sequence x_1 = \sin(pi root(2)) x_2 = \sin(pi root(6)) x_3 = \sin(pi root(12)) In short my x_n = sin( pi root(n^2 + n)). I want to plot this as an animation as n goes to infinity....
7
votes
2answers
1k views

How to plot a discontinuous function curve and diagram of Markov chain with TikZ?

Please apologize my ingnorance of tips to use for asking questions. I would like to realise the plots and the diagram like those shown on page 158, 160 and 161 on this document Chaine de Markov. ...
7
votes
1answer
2k views

Plotting a straight line to the peak point of a graph

For the MWE below: \documentclass{report} \usepackage[left=2.5cm,right=2cm,top=2cm,bottom=2cm]{geometry} \usepackage[T1]{fontenc} \usepackage{pgfplots} \usetikzlibrary{calc,trees,positioning,arrows,...
7
votes
1answer
872 views

How to draw dash-dotted curves using MetaPost?

Is it possible to (easily) draw dash-dotted curves in MetaPost, i.e. curves that alternate between a dash and a dot? For either dashed or dotted curves, I use the draw command and end it with dashed ...
7
votes
1answer
249 views

pgfplots: wrong domain, wrong axis, uncentered graph… is it a bug?

Question I get a very strange graph with pgfplots, see the picture below. What is going wrong? Code and picture \documentclass{article} \usepackage{pgfplots} \begin{document} \begin{tikzpicture} \...
7
votes
1answer
5k views

How to set Tikz scatter marker weight?

I'm using tikz to produce scatter plots as shown in this question. I can define the marker size with \tikzset{mark size=8} but now I'm looking for a way to make the line of the marker thicker in a ...
7
votes
1answer
4k views

How to generate stem plots with TikZ like stem() in Matlab?

Given a set of (x,y) coordinates stored in a file, how could I generate a stem plot from those coordinates? I would like to achieve something similar as the matlab's stem function: http://www....
7
votes
3answers
1k views

Plotting the graph for exp(cos(1/x))

I am having issues plotting the function exp(cos(1/x)) in the domain (0,1) with pgfplots and TikZ using a normal addplot command with the function exp(cos(deg(1/x))). It seems LaTeX is having some ...
7
votes
1answer
930 views

How can I place numbers into marks of a plot?

I have the following plot with this latex-source: \documentclass{minimal} \usepackage{tikz} \usetikzlibrary{plotmarks} %%%< \usepackage{verbatim} \usepackage[active,tightpage]{preview} \...
7
votes
1answer
214 views

Solid region enclosed by surfaces

I'm trying to obtain the solid regions showed below for didactical purposes: I know that with psplot in 2d one can do things like that (area enclosed by two curves) and the output is very nice (I did ...
7
votes
1answer
2k views

Problem with a TikZ/Geogebra plot of an exponential function (even if using CVS version definition)

I wanted to graph the function f(x)=(-1+4x^2)*e^2 in a coordinate system. Using "Export Graphics View as pgf/TikZ" in Geogebra I got the following code (here shown after I did some minor changes ...
7
votes
1answer
1k views

Histogram: different color for each bar

I have the following code. \documentclass[a4paper,twoside,12pt]{article} \usepackage[T1]{fontenc} \usepackage[utf8x]{inputenc} \usepackage[english]{babel} \usepackage{pgfplotstable} \definecolor{...
7
votes
1answer
709 views

Tikz: Correct arrows at the end of parametric curves?

\documentclass[11pt]{amsart} \usepackage{tikz} \begin{document} \begin{tikzpicture} [scale=4] \draw[domain=0:0.4, smooth, variable=\t, samples=200, ->] plot({(1/sqrt(2)*(\t-\t^3)}, {(1/sqrt(2)*(\...
7
votes
1answer
1k views

Missing bars in pgfplots histograms

I have a problem with pgfplots, when I try to plot some data from a file. I use the following code \begin{figure}[p] \centering \begin{tikzpicture} \begin{axis}[ybar interval,xtick=,width=\...
7
votes
1answer
2k views

Scaled ticks with ymin and ymax

For a publication I am preparing multiple plots with PGFPlots and would like to have them all look alike, i.e. having the same axis and identical ticks. For this I intended to use ymin and ymax, but ...
7
votes
1answer
4k views

TikZ plot: centering and units on axis

I have the following. I'm trying to center the plot and putting \begin{center} around the TikZ image does not work. Also I'm trying to change the units of the x-axis. The x-axis is used to represent ...
7
votes
0answers
68 views

pgfplot error with mathematical equation [duplicate]

I'm new to this site and I'm searching for the help. I'm trying to plot an adsorption isotherm described with specific equation. I used pgfplots package with following commands: \documentclass{...
7
votes
0answers
170 views

Is there a better way to display this information? [closed]

I have drawn this picture in tikz. Is there a more visually pleasing and intuitively appealing way of displaying this information? I feel what I have drawn is dull and boring. I have to include more ...
6
votes
5answers
768 views

How to plot a complicated multi-variable function in a tex document automatically, not just importing an image

I have the following Tex functions and I want to plot them in my tex thesis, but I don't know how. I mean, I want the Tex to draw the function, not just to include an external image to it. y[\text{x$\...
6
votes
3answers
12k views

How to generate a simple cartesian plane system?

I need to make a cartesian plane for plotting the straight line joining the points (-3,1) and (6,-2). This is a very simple cartesian plane plotting. When I looked at the manual for tikz the graphics ...
6
votes
3answers
393 views

Why must the independent variable of a function to be plotted be a macro in TikZ?

Consider the following code (taken from Jake's answer) and focus on the variable of the function to be plotted. \documentclass[border=5pt,tikz]{standalone} \begin{document} \begin{tikzpicture} \...
6
votes
2answers
288 views

Area Bounded by 4 Curves

I would like to plot the area bounded by the following four curves: x^2 - y^2 = 4 x^2 - y^2 = 1 xy = 1 xy = 2 I'm fond of pstricks but tikz is fine too, whichever is simpler would be best. I tried ...
6
votes
3answers
2k views

Drawing gamma function in LaTeX

Is there an elegant way to plot gamma function (or some similar non-elementary function), http://en.wikipedia.org/wiki/Gamma_function via TikZ or pgfplots? The graph I have in mind is something ...
6
votes
3answers
518 views

Plot a function of two variables equal 0

I would like to plot the function x2(1 − x2) − y2 = 0 in LaTeX. I tried running following code \documentclass{article} \usepackage[margin=0.5in]{geometry} \usepackage[utf8]{inputenc} \...
6
votes
2answers
634 views

Plotting 3-dimensional Sets

I am using MikTex and Texworks with pgfplots to try and plot 3 and 2-dimensional sets Could some of you nice fellas help me out? I am trying to plot: I can print out the page and draw per hand too, ...
6
votes
2answers
311 views

pgfplots: How to draw a tangent graph below two others?

Assumed I want to draw three simple graphs based on the following illustration: How can I plot those three graphs? I've tried to create something like this: Minimum Working Example (MWE): \...
6
votes
2answers
1k views

XYZ Coordinate System Drawing

I am beginner and I'd like to know if it is possible to recreate this image in Latex. I've tried to find some examples to help me, but I didn't succeed. Thanks in advance
6
votes
2answers
5k views

Draw angle between two lines in a circle

I'm trying to draw an angle between two lines. I have this code so far, but i cant draw a angle. How do I do it? I'm using PGF/TikZ. \begin{figure} \begin{tikzpicture} \begin{axis}[ ...
6
votes
3answers
3k views

Plot an elliptic curve in Latex

I am trying to plot the elliptic curve secp256k1 y^2=x^3+7 in my latex-document. \begin{center} \begin{tikzpicture}[domain=-4:4, samples at ={-1.769292354238631, -1.76, -1.74, ..., 2.26, 2.35, 2.7, 2....
6
votes
1answer
2k views

Graph showing functions over the same x and y ranges

I want to draw functions and have used this code. But I don't like to give every function a separate domain, I want to say this function has ymax=4 and ymin=-3. Who can help me? \begin{tikzpicture}[...
6
votes
4answers
12k views

Multiple subfigures not appearing on the same line

Multiple figures under a single caption. I have tried a code to put two images in a together under a same caption. The subfigures do not appear on the same line. The code is : \documentclass{...
6
votes
1answer
1k views

Visualizing a set of complex numbers

Suppose I have an infinite unbounded set of complex numbers, for example all the numbers outside the unit circle. Is there some good way to visualize that set using LaTeX with some drawing library?
6
votes
1answer
6k views

Scatterplot with data from CSV file and trendline

I have created a scatterplot with code from this previous asked question. \documentclass[varwidth=true, border=2pt]{standalone} \usepackage[utf8]{inputenc} % this is needed for umlauts \usepackage[...
6
votes
1answer
3k views

Bell curve with multiple x-axes and annotations

I've just started working with pgfplots and I'm getting good results, but I'm having difficulties getting this one done in LaTeX: The curve itself is not a problem, but the multiple x-axes (I don't ...
6
votes
1answer
500 views

How to create a Ricker Wavelet in TikZ

Is there an easy way to create this wavelet in TikZ. Following the formula I have which is (1-2pi(x)^2)(e^-pi(x)^2) but when trying to create this I arrived at the issue that the function I have ...
6
votes
2answers
2k views

sinc function amplitude wrong in pgfplots

It seems that pgfplots has a problem with plotting the sinc function, aka sin(x)/x. Why is the amplitude wrong? It should be 1 at x=0. As to my knowledge the y-scale is nonsense (compare http://www....
6
votes
1answer
1k views

Making the y-axis range of a plot have more values in some parts

For the MWE below: \documentclass{report} \usepackage[left=2.5cm,right=2cm,top=2cm,bottom=2cm]{geometry} \usepackage[T1]{fontenc} \usepackage{pgfplots} \begin{document} \begin{figure}[H] \begin{...