{plot} is for questions concerned with plotting data or functions using TeX. For questions specific to the pgfplots package, use the {pgfplots} tag.
9
votes
1answer
393 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 ...
6
votes
5answers
924 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 ...
5
votes
1answer
990 views
Fill area of curve above a line using pgfplots
This question is related to Fill between two curves in pgfplots. which started me of.
However, I need to have just the area above the reference line filled.
\begin{tikzpicture}
...
3
votes
2answers
933 views
Area between curves
I want to fill the area of a region R bounded by x=f(y), x=g(y), y=A and y=B.
For example, R is bounded by x=0, x=2/y, y=1 and y=4.
7
votes
2answers
972 views
Plot reciprocal function with tkiz
I need to plot f(x) = 1 / x in LaTeX and am trying to with Tikz. I haven't found a way to set the vertical range, so the values go out of bound around x=0.
Using gnuplot directly doesn't seem to be ...
7
votes
5answers
880 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}
...
4
votes
1answer
2k views
Plot a function of a binary logarithm with TikZ
How do I plot a function of a binary logarithm with TikZ? Say that I want to plot f(x) = log_2 x.
7
votes
1answer
774 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 ...
7
votes
1answer
793 views
How to have linked axes on plots?
I plot infrared spectra in many reports and I display the energy units in two ways, wavenumbers $cm^{-1}$ on the bottom x-axis and wavelength (nm) on the upper x-axis. The relationship is
...
8
votes
2answers
1k views
inset plot with pgfplots
I am using pgfplots to plot some data I have, and I wanted to generate a large plot with another plot inside of it, showing a zoom on a region of the large plot.
I have noticed that when you do
...
4
votes
2answers
389 views
PGFplot producing “noise” (incorrect graph)
Update: This has problems if the samples are one of these: {19,21,23,28,30,31,32,34,36,38,39}, so I think something else is going on.
I can get this example to work fine if I reduce the number of ...
9
votes
1answer
1k views
Plotting an implicit function using pgfplots
What is the correct way to plot an implicit function using pgfplots? Consider the following example:
\documentclass{standalone}
\usepackage{pgfplots}
\pgfplotsset{compat=newest}
\begin{document}
...
11
votes
3answers
2k views
Fill the area between two curves calculated by pgfplots
This is essentially the same question as fill the area between two curves when their coordinates are known.
In that question, the curves were defined by known coordinates. I want to fill the area ...
2
votes
2answers
2k views
How to plot f(x)=sin(x), k(x)=cos(x) and u(x)=x² with TikZ
How can we plot the following three functions
f(x) = sin(x)
k(x) = cos(x)
u(x) = x²
for x ∈ [0,1]
on a single plot with the help of TikZ?
2
votes
1answer
603 views
Two color line in gnuplot
Is there any way to plot a line graph where each series is plotted with two alternating colors? For example, say I was plotting the population of bees over time and I wanted the line to alternate ...
23
votes
1answer
4k views
Bell Curve/Gaussian Function in TikZ/PGF
Can anyone tell me how to plot a gaussian function/bell curve using TikZ/PGF? I'm basically looking to implement something like PSTricks's \psGauss command.
6
votes
3answers
956 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.
17
votes
1answer
2k views
Fill between two curves in pgfplots.
How to accomplish fill between two curves in pgfplots? For example, I have
...
\addplot coordinates {(0,1) (1,1)};
\addplot file {something.dat};
...
and I would like to have filling between those ...
4
votes
1answer
402 views
How can I restrict `pgfplots` plot to an interval manually?
OK, I've plotted these graphs but am unable to stretch the second one, so that they both have the same values on the vertical lines drawn from one to another. I've tried to set domain=0:2200 for both ...
8
votes
3answers
520 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.
...
