{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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2
votes
7answers
497 views

How to graph piece wise function. f(x)={-x for -l<x≤0 & 0 otherwise}

f(x)={-x for -l<x≤0 & 0 otherwise} How to graph the above equation. pls help. also explain
4
votes
1answer
126 views

Plotting in latex

I have to produce few charts a week and finding very hard/time consuming typing in code for plots using Tikz. Graphs i have to produce are simple,most of the time linear or exponential and does not ...
2
votes
4answers
96 views

How to fit x-axis and y-axis to show a domain?

I try to draw this spiral by Matlab t=[0:0.001:4*pi]; x=(1/2)*(exp(exp(-t))+exp(exp(-t-2*pi))).*cos(t); y=(1/2)*(exp(exp(-t))+exp(exp(-t-2*pi))).*sin(t); plot(x,y); but I want to show the domain ...
0
votes
4answers
224 views

Plot Graph with axis

Lower curve is given by function y=$\left\lfloor {\frac{x+2}{2}} \right\rfloor$ and Upper curve is given by formula y=4 for x=2,3 while y=$2 \left\lceil {\frac{x}{3}} \right\rceil$
1
vote
1answer
70 views

tikz plot coordinates decorations change between points

I have a plot of coordinates \draw plot [smooth] coordinates{ (-3.1,-0.5) (-1.5,0.3) (0,0) (1.8,0.64) (3,0.5)}; Is there a way to have the curve between (0,0) and (1.8, 0.64) painted thick? I ...
3
votes
1answer
191 views

Algebraic curves in TikZ or Asymptote

I want to draw algebraic curves in asymptote, but I do not know how this works. Has anyone an example? If we want to plot for example k[x,y]/\langle x^2+y^2-1\rangle, where can I input the equation ...
3
votes
1answer
124 views

Legend problem with horizontal bars in pgfplots

I have a problem with a weird offset with horizontal bars in a pgfplots legend. They seem to be moved "up" a bit, so a part of them is hidden under overflow. An image of the situation which explains ...
5
votes
1answer
318 views

How to draw a parametric 3D curve in tikz

I would like to use tikz or a similar LaTeX package to draw the following curve in a three-dimensional coordinate system (t^2, t*(1-t), 1-t) for t in (0,1). Is there an easy way to do this? Thanks!
2
votes
1answer
52 views

pgfplot - groupplot print x label only once in the last row

In the below group plot, the xvalues are common for all the subplots. I want the x labels to be displayed only on the last row of the group plots. \documentclass{article} \usepackage{tikz} ...
2
votes
1answer
152 views

different colors in xlabel (tikz latex pgfplot)

I would like to change the color of a part of my x label in my pgf plot. \begin{figure}[h!] \begin{tikzpicture} \begin{axis}[xtick pos=left,legend pos=south east, xlabel style={yshift=-0.5cm}, xlabel ...
1
vote
1answer
166 views

change color of line in legend image (tikz pgfplot)

I want to change the color of the line in the legend image, because the line color in my plot is different to the mark color. \begin{figure}[h!] \begin{tikzpicture} \begin{axis}[legend pos=south ...
6
votes
2answers
93 views

Error in pgfplot when big offset is subtracted

I have some data with a huge offset that I want to plot. Im using PGF plots, where it's possible to subtract the offset from a whole row in my data. This works when the offset isn't too big, and/or ...
3
votes
1answer
171 views

Plot Tikz graph defined with two variables, ie 4=x^2+y^2

I want to plot a graph of 4=(x-2)^2+(y-2)^2, How do I do that within tikz plot? I have tried re-arranging but it just throws errors at me! \draw [domain=0:4] plot ({\x},{2-\sqrt{4\x-\x*\x}}); Is there ...
5
votes
3answers
142 views

How to graph an implicit polar equation?

I need to graph the following implicit polar equation using Latex I would be very thankful for any help. Thanks
2
votes
0answers
58 views

pgfplots 3D plots size versus 2D plots size

I wanted to create a 3D plot but it's not possible for me to set the right size. Should I try out until I find the right values for height and width for the 3D plot or is there an easy way to find ...
1
vote
1answer
124 views

How do you plot functions for straight lines $y=mx+c$ with labels and intercepts?

I've taken screen captures from other problems, but the results are poor. I'd like to be able to do lines, and move onto quadratic etc. later. y=3x+2 show & label x & y axes origin y ...
1
vote
0answers
35 views

How to draw a set of parallel related axis?

I want to draw several parallel axis, whose values are inter-related, for example: (source) (source) Note that: The axis don't have to be the same length (i.e. partial overlap is allowed). The ...
2
votes
1answer
140 views

How to draw the graph of function x+y=100

Following is the code for drawing the graph of x+y=4. Now i am thinking to draw the graph of x+y=100 for that what are the necessary changes in the given codes. \documentclass[12pt,a4paper]{article} ...
6
votes
1answer
98 views

Add Whitespace Around Plot Marks

I have a simple graph in PGFPlots, where the marks of two different plots slightly overlap: Around 50 and 100 the graph gets a bit too busy, so I would like to add some whitespace around the marks, ...
1
vote
2answers
196 views

Can some one help to draw this graph?

I am pretty new to Latex graphics I would like to aks whether the Latex could draw this picture? The function I used is : $ f(x)=\left\{ \begin{array}{ll} (x-5)^3-3(x-5)^2-18(x-5)+40 & ...
6
votes
3answers
311 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 ...
3
votes
0answers
58 views

LaTeX + Gnuplot on Mac: Plot Not Showing

Right. Total novice here so you might need to go easy. I'm trying to use Gnuplot with TikZ to draw an elliptic curve. Using TeXShop 3.58, Gnuplot 5.0 patchlevel 1... don't know what else is relevant. ...
1
vote
0answers
59 views

White space between the writing and image [on hold]

i am inserting a pdf image into my paper. After cropping my pdf images, i still have some white space left between the writing section and the image. Can i get rid of it somehow. I am doing it like ...
0
votes
0answers
68 views

Making a phase portrait of two autonomous system of differential equations with latex

I am trying to make a phase portrait of two differential equations. The equations are: x'=x-y y'=1-x^2 I have tried to google it, and looked in here, but haven't found a sufficient answer. I did ...
2
votes
1answer
46 views

PGFPlots cycle list skips first definition after every cycle

I got some problems with self-created cycle lists in PGFPlots. As you can see, the plots skip the first definition of my cycle list after every run through the cycle list. Are there any coding ...
4
votes
1answer
120 views

I am trying to plot area vs volume

I am writing a lab report in chemistry discussing the surface of catalysts. I want to show that area doesn't increase proportionally to volume. I have been trying to plot a function vs against another ...
8
votes
2answers
324 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] {$y$}; ...
2
votes
1answer
74 views

Plotting a function without any coordinate system

I want to plot two functions about each other without any coordinate system. Can you please show me how/ give me a hint, how I can achieve this. \begin{tikzpicture} \begin{axis}[ ...
3
votes
2answers
546 views

Hysteresis Loop

I am new to latex. I'm doing my MA thesis on Magnetic Materials. I don't know how to draw this diagram in LaTeX. I would be grateful if you can help me with this image. Thanks.
1
vote
2answers
40 views

vertical line and extension of node in tree

I'm trying to generate a tree that has a vertical line coming through exactly in the middle, right after the 0.5 on the top node, and the 2 on the bottome node, and I would like to write 1.25,1.25 ...
1
vote
1answer
22 views

centering image generated by geogebbra latex code

I have the following code generated by geogebra and I tweaked it a little , specifically changed x,y to 3cm and scale to 4. But now I'm not sure how to center the picture, here is the code: ...
2
votes
1answer
208 views

Combine cross reference to multiple figures

I am writing a paper in Automatica journal format. The sample and style file can be found here. I want to use a cross reference to serveral figures such as Fig.~\ref{fig:aaa,fig:bbb,fig:ccc} and get ...
2
votes
1answer
86 views

latex files generated by tikzdevice leaves large space between image and caption

Ive been using the tikzdevice package in R to generate latex code of my plots, I've noticed that it always leaves a large white space between the caption and the figure itself, here is an example I ...
2
votes
0answers
78 views

How to create a plot like the one shown [closed]

My program is currently making plots which look like However, I would like to produce a plot with font and plot axes which looks exactly like the following: I do not care about the actual data ...
4
votes
2answers
106 views

tikz plot not correct [duplicate]

The following code generates the wrong plot: \documentclass[tikz]{standalone} \usepackage{pgfplots} \begin{document} \begin{tikzpicture} \begin{axis}[domain = 0:1, samples = 500] \addplot[color ...
1
vote
2answers
160 views

Plot multiple functions when data-columns are separated by comma pgfplots

I have a csv file with 2 "columns" separated by comma. So the .csv file looks something like 0.123,0.3232 1.244,1.325 The above numbers are the "y-values" at x=0 and x=1 respectively, i.e. the ...
4
votes
3answers
144 views

Horizontal parabola [duplicate]

How does one draw a horizontal parabola, left or right oriented? I can easily draw: \draw[blue, line width=1.75pt, domain=-2.00 : 3.00, samples=1500] plot[smooth](\x, {\x*\x - \x - 2}); and even ...
5
votes
1answer
51 views

Color list not respected

I imposed a new color list but it is not respected in my code (that is the following). Every group of marks and the own line should have one color of the list. This is the result I have: ...
1
vote
1answer
89 views

Use pgfplots to plot a single column .txt file [duplicate]

I have a single column .txt file with the following info in it 1 2 3 4 5 I use the following ME and it does no work: \documentclass[border=1]{article} \usepackage{pgfplots} ...
2
votes
1answer
87 views

Plot a data/Table from Mathematica using `pgfplots`

I use data1 = Table[] in Mathematica 9 (M9) to generate a table of values. The thing is that when I read the data file, there's only one column! How can I plot this data file in LaTeX using pgfplots? ...
3
votes
3answers
104 views

LaTeX and Mathematica plot with same font/style

I know there are a couple of questions with answers to this but none of them seems to work for me so I ask here. Some basic facts: I have 1. Mac OSX 2. Very limited knowledge in Terminal (so things ...
0
votes
2answers
61 views

How to plot the Neilian Parabola with Latex?

I want to plot the Neilian Parabola with Latex. The problem of course is that at zero the curve has a singular point which leads to errors when trying to plot the curve. I've already searched on the ...
1
vote
1answer
100 views

Help with plot figure

I have the following two questions: I would like to move the "genomic position" label further down How can i draw the thing i added poorly in paint? This is the code ...
1
vote
1answer
105 views

Allee effect plot with Tikz

I'm trying to use Tikz to plot a rough schematic of the "Allee effect" in population dynamics. However, I've been struggling with the finishing touches. Below is my try: \begin{tikzpicture} ...
2
votes
1answer
159 views

Forest plot with TikZ

I'm trying to create a 'Forest Plot' in TikZ. An example of this is below: I have experience with PGFPlots but I can't find an example or even a starting point for something like this. The only ...
1
vote
1answer
110 views

Diagram in tikz

I've been trying to replicate this image , using TIKZ, but so far the results have been very bad. I'd like to know with you have tips/hints on how I should do it. Thank you!
1
vote
0answers
46 views

strange results when plotting a function that i declared

I've declared two functions, the first of which (Gamma) works fine, but the second gives me really strange results that aren't right (after checking in excel). I've tried changing al the parameters ...
1
vote
0answers
23 views

Histogram: problem labeling x axis [duplicate]

I would like to add on the x axis the value for each bar that are 400, 500, 600 and 700. I don't know why the only one that appears is 400. The code I used is the following ...
2
votes
2answers
96 views

How to create an grouped histogram with table annex

I am trying to code the following graph with latex. Can someone do it? (grid settings and colors are not important) the table is the following \begin{filecontents}{table.dat} T L F LF 400 ...
5
votes
3answers
72 views

Implicit plot - ellipses

I need to draw a pencil of conics: Given two ellipses $\left( \frac{x}{a_1}\right)^2 + \left( \frac{y}{b_1} \right)^2 - 1 = 0$ and $\left( \frac{x}{a_2}\right)^2 + \left( \frac{y}{b_2} ...