10
votes
2answers
630 views

plot 3d graphs of functions defined implicitly

How can I plot 3d graphs of functions defined implicitly (quadratic forms, for Linear Algebra course notes -- I'd like to include lots of examples)? As far as I can see it is not possible with ...
6
votes
2answers
463 views

Plot basic complex transformation in LaTeX

I want to first draw a shaded region on a xy-plane: 0≤x 0≤y≤π and then the image of the above region mapped onto a uv-plane by the transformation f=exp(z), i.e. the shaded region: ...
5
votes
1answer
183 views

pgfplots: Read expression from file

For my lab reports I often have to do complex fitting and transformations to my data (like fitting cauchy distributions or FFT). Fitting with gnuplot sometimes fails and including it directly in the ...
3
votes
1answer
738 views

How to run gnuplot/latex from inside texshop?

I was able to write a piece of code that drew a graph in gnuplot and then using tikz embedded that into my TeX document and run it via Texshop. I am not able to do that anymore. I need to run ...
7
votes
1answer
676 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 ...
10
votes
1answer
948 views

TikZ: Fill (closed) parametric plot of catacaustic

Is there a trick to fill the parametric plot of a catacaustic which looks closed but isn’t closed in TiKZ meaning. The Problem is the egdge which looks closed but isn’t it … I guess I can ...
3
votes
2answers
1k 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.
13
votes
1answer
2k 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} ...
18
votes
4answers
4k 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
1answer
711 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 ...