{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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9
votes
1answer
1k views

Pgfplots: plot graph inside table

I would like to plot a table with a graph inside it. I am trying to use this example as a guide. This is the current hand-constructed version. UPDATE: I don't have enough reputation to answer my ...
9
votes
1answer
198 views

Plotting several 2d curves (with different colors) in a 3d graph

I'm trying to reproduce 3D plots with several 2d curves, like in Plotting several 2D functions in a 3D graph. The end result looks like this: The questions are: I would like to change X labels ...
9
votes
1answer
632 views

Using pgfplots with a0poster

I want to use tikz/pgf to plot some graphs in a poster done with a0poster. That is the code: \begin{tikzpicture} \begin{axis}[xlabel=lambda, ylabel=int] \addplot[blue] table [mark=none, col ...
8
votes
3answers
4k views

Weird result plotting sin(x) using tikz/pgf [duplicate]

Trying to plot the sin(x) function, I get this result: The MWE is here: \documentclass{standalone} \usepackage{ pgfplots} \begin{document} \begin{tikzpicture} \begin{axis} ...
8
votes
2answers
4k views

Easy creation of logarithmic grid with TikZ

Is it possible to create a logarithmic grid using the command below with TikZ? \draw (-0.1,-0.1) grid (4.1,4.1); It would be great to be able to create a logarithmic grid without having to specify ...
8
votes
5answers
3k views

How can I draw dirac deltas with arrow heads with pgfplots

I would like to draw this in pgfplots: I've tried this, but I can't figure out how to get the arrowheads. \documentclass{article} \usepackage{pgfplots} \begin{document} \begin{tikzpicture} ...
8
votes
3answers
2k views

tikz plot of two sine waves, showing the phase difference

What I am trying to achieve here is to plot two sine waves, and with some dotted lines on the peaks showing a \Delta t in the middle, as the phase difference. Any help appreciated.
8
votes
3answers
7k views

Error: “Dimension too large…” when plotting EXPONENTIALS with TikZ

Despite having read answers to 4-5 relate questions, I still can't get why my code does not compile. Here it is: \documentclass[11pt,twoside]{book} \usepackage[paperheight=24cm, paperwidth=35cm, ...
8
votes
2answers
470 views

Comparison of pgf plotting packages

I know three ways to do function plots based on the TikZ/pgf package: TikZ/pgf directly pgfplots tkz-fct Which of those options is the most powerful? Why? Can you give typical cases where one ...
8
votes
3answers
634 views

Calculate function with integers as input and plotting

I'd like to plot the function 1/2*x(x+1) in for integer values ranging from 3 to 20 and in particular I'd like the function to be plotted in those points. I have managed to create the following graph ...
8
votes
2answers
322 views

Coloring intersection of curves

I've made the following code: \begin{center} \begin{tikzpicture}[domain=0:6] \draw[->] (-1,0) -- (6,0) node[below right] {$x$}; \draw[->] (0,-1) -- (0,6) node[above] {$y$}; ...
8
votes
1answer
762 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 ...
8
votes
1answer
566 views

Tikz / pgfplot: plot Alternating Sequence

Is there any possibility to plot an alternating sequence? Picture: Alternating sequence: I don't need exacly the same output as above. I tried the following: \begin{tikzpicture} \begin{axis}[ ...
8
votes
1answer
208 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} ...
8
votes
1answer
416 views

how to draw plots without data in tikz?

I want to draw this plot. I know how to do it with data. But here I don't have any data. And I want to draw this. How would I do it?
8
votes
1answer
327 views

Tikz plots distorted mark

Consider the following code: \documentclass{minimal} \usepackage{tikz} \usetikzlibrary{plotmarks} \begin{document} \tikz{\draw (0,0) -- plot[mark=o] (0.5,0) -- (1,0);} \end{document} It seems ...
8
votes
1answer
3k views

How can I display tick marks on only one axis of a pgfplots graph?

How can I display tick marks on only one axis of a pgfplots graph? Here is some simple code to work with: \documentclass{article} \usepackage{tikz} \usepackage{pgfplots} \begin{document} ...
8
votes
1answer
527 views

Huge table/matrix with colored boxes

I have a huge CSV file with about 25.5k records that (structurally) looks like the sample below. In essence, I want to display the values of the columns U,V,W,X,Y,Z of each row as a colored box. The ...
8
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 ...
8
votes
1answer
2k 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: ...
8
votes
1answer
1k 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
2k 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
276 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} ...
8
votes
1answer
2k views

Pgfplots contour gnuplot crazy labels

This is driving me mad. I am tryng to create some contour plots, but I get them full of labels, so that they are unreadable! I can't even see the lines or read the values because they are too much. I ...
8
votes
3answers
682 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
418 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
0answers
157 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 ...
7
votes
5answers
776 views

Plotting the Cantor function

I would like to know if there is an (easy?) way of plotting the Cantor function (devil's staircase) using LaTeX. Doing it manually with TikZ seems like madness somehow and my knowledge of plotting ...
7
votes
4answers
708 views

tikz/pgfplot — always same distance between marks

Is there a way to get for all tikz-plots in one LaTeX document the same distance between the plot marks, ie the distance between the marks should be independent of sample size. It would be really ...
7
votes
2answers
249 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
382 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 ...
7
votes
2answers
183 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 ...
7
votes
3answers
330 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} ...
7
votes
3answers
738 views

How can I plot the F distribution

I wish to plot the F distribution by declaring its density function. However with the following code I get an error saying that fdst has not been declared: \documentclass[border=5mm]{standalone} ...
7
votes
5answers
2k 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
997 views

How to draw 3d vector field on a line?

How to draw 3d vector field on a line? I want to visualize the vector field $( m_x(x), m_y(x), m_z(x) )$. After searching "visualize vector field", I find that most plotting software either plotting ...
7
votes
2answers
274 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 ...
7
votes
2answers
739 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 ...
7
votes
2answers
543 views

How to draw this particular Mexican hat potential?

I know there are some other mexican hat questions here, but none of the answers seems complete to me. I would like to draw the following figure with TikZ with similar axis and labeling. How can one do ...
7
votes
1answer
3k views

How can I import and scale matplotlib plots, keeping fonts the correct size?

I'm working on several pieces of coursework involving lots of plots generated with matplotlib in python scripts. Currently I'm doing this with an iterative process where I set a plot size in the ...
7
votes
1answer
1k 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? ...
7
votes
1answer
99 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
501 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
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.
7
votes
1answer
3k views

Draw outside axis with pgfplots

I have the following diagram, and would like to extend the red line so it crosses the axes and goes on for a bit at the start and the end like in the second picture, but I would like the red and blue ...
7
votes
1answer
729 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
2answers
828 views

Nodes near coord overlapping…how to shift up

I am using nodes near coords but as you can see the values on the bottom are overlapping. I have tried placing them manually but that hasn't worked either...How to just shift up the nodes so they do ...
7
votes
1answer
566 views

TikZ doesn't find all intersections between plot and a line

Why doesn't TikZ find all intersections. They are obviously there … \documentclass[border=10mm]{standalone} \usepackage{tikz} \usetikzlibrary{intersections} \begin{document} ...
7
votes
1answer
838 views

tikz: plot stepped gauss

I need to plot a stepped gauss curve as shown below. Yet I want to do this dynamically (in text) so I can alter it later. I know how to plot a smooth gauss but I really need the stepped one. Also a ...
7
votes
1answer
730 views

Color and legend for 3d surface

I'm trying to plot a 3d surface using pgfplots and this is what I have done so far: \usepgfplotslibrary{patchplots} \begin{tikzpicture} \begin{axis}[% width=12cm,height=12cm, xlabel={$J_1$}, ...