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Direc­tory tex-archive/graphics/epix/samples

ePiX -- samples/README

Last Change: September 22, 2007

This directory contains sample files. Files with extension ".flx" may
be compiled like xp files with epix or elaps, or converted to gif or
mng animations with flix.


artifacts.xp
  Interaction between coarse and fine meshes in shade surface plotting.

binom.cc:
  Generates pseudo-random data for histogram.xp

bowl.xp:
  Quasi-realistic colored surface shading.

butterfly.xp:
  A Thom catastrophe graph.

calculus.xp:
  Plotting derivatives and definite integrals.

clipping.xp:
  Clipping, shaded surfaces, and fake transparency.

color_sep.xp:
  Color separation.

conic.xp:
  Envelopes and tangent lines; projective equivalence of a parabola
  with a circle.

contour.xp:
  Building a path from sub-paths.

coord_tricks.xp:
  Using page layout to achieve broken axes.

cropplot.xp
  Graphing functions with singularities.

cube.flx:
  Stereoscopic (3-D glasses) movie of a rotating cube.

dataplot.xp:
  Scatter plots, histograms, and page layout.

decorate.xp:
  Decorated shaded surface (see file for compiling).

demoivre.xp:
  Loops; a geometric proof of deMoivre's formula.

densityplot.xp:
  A gray-shaded interference pattern.

dipole.xp:
  Plotting flow lines and isobars.

denom.xp:
  Loops and gcd; Thomae's function with discontinuity set Q.

extract.xp:
  A magnified inset using screen::extract; an unexpected tangent line.

geomsum.xp:
  Loops and color filling.

golden_rect.xp:
  Simple use of variables; constructing a golden rectangle.

helicoid.flx:
  Isometric deformation of a catenoid to a helicoid.

hello.xp:
  My First Figure, from the manual.

histogram.xp:
  Histograms of simulated coin tosses (data from binom.cc).

house.flx:
  Color semantics; sun setting on a simple house.

hyperboloid.xp:
  Clipping, shaded surfaces; two families of rulings on a hyperboloid.

inverse.xp:
  Screen affine operations; inverse functions.

koch.xp:
  The von Koch snowflake fractal.

label_debug.xp:
  Format debugging tests for labels, draws 32 attribute combinations.

layout2.xp:
  Page layout; flow lines of a planar vector field.
  
layout.xp:
  Page layout; six views of the square root Riemann surface.

legend.xp:
  Axes and legends; Taylor polynomials of sin x.

levelset.xp:
  Clipping and plotting; manual level curves on a saddle.

levelset2.xp:
  "Advanced" clipping; level bands on a monkey saddle.

levelset3.xp:
  Clipping and legends; flat-shaded level bands wth matching legend.

lissajous.xp:
  A Lissajous figure with arrows.

lighting.h: Classes for lighting effects and color-shaded surfaces.
  (lighting.flx illustrates use.)

line_debug.xp:
  Format debugging tests for paths, draws 32 attribute combinations.

log.xp:
  Object hiding with paths and surfaces; the Riemann surface of log.

lorenz.xp:
  Page layout, ode_plot; the Lorenz attractor and its 3-D vector field.

medians.xp:
  Euclidean geometry; medians and altitudes of a triangle.

minkowski.xp:
  A longitudinal slice of Minkowski space R^{2,1}.

mirrorball.flx:
  The circle class and intersections; 3-D stereographic movie.

newton.xp:
  Loops; root location by Newton's method.

objects.xp:
  Simple geometric objects; 2-D landscape.

oscillator.xp:
  Graphing, user-defined elements, and page layout.

parabola.xp:
  A basic plot.

pascal.xp:
  Intersection operators; Pascal's theorem in projective geometry.

pendulum.flx:
  Phase diagram of an undamped pendulum.

planes.xp:
  Manipulating objects, clipping; a stack of plane sections of a cube.

plotting2.xp:
  Surface plotting in PSTricks; from the manual.

plotting3.xp:
  Loops and color control; from the manual.

plotting.xp:
  A basic plot; from the manual.

polar.xp:
  Polar plotting.

pole.xp:
  Clipping a plot; the real part of a first-order pole.

polyhedra.xp:
  Spherical regular polyhedra. Compilation controlled with
  pre-processor flags, e.g., "epix -DCOLOR -DDODECA polyhedra.xp".

R_demo.xp:
  Gaussians from the R demo.

riemann.flx:
  Rotating the Riemann surface of sqrt(z) in R^4.

S2_harmonics.xp:
  Domain-dependent surface shading (color function depends on two
  variables), page layout; the spherical harmonic Y_3^0. (Compile with
  "epix -DY20 S2_harmonics.xp" for Y_2^0.)

saddle.xp:
  A quadratic saddle using "surface" capabilities.

semicirc.xp:
  A simple figure using variables and a function for organization.

shadeplot.xp:
  Shading regions enclosed by graphs; the fundamental theorem of calculus.

slopefield.xp:
  A slope field and flow lines.

sphere.xp:
  Plotting curves and latitudes/longitudes; loxodromes.

spherical.xp:
  Scenery (multiple shaded surfaces); spherical coordinates.

sqrt.xp:
  Domains and selective plotting; the Riemann surface of sqrt(z).

sqrt2.xp:
  Domains, selective plotting, and change of style in a single plot.

std_F.cc, std_F.h:
  Extensively-commented library code for depicting 2-D affine maps.

std_F.xp:
  Sample file illustrating the use of external libraries. Contains
  instructions on building a library from std_F.cc.

steiner.flx:
  Steiner's Roman surface, rotating.

steiner2.flx:
  Steiner's Roman surface sliced, with slice direction rotating.

surface_shade.xp:
  Position-dependent surface shading. (Color function depends on three
  variables.)

symmetries.xp:
  Affine maps and layout; the symmetry group S_3 acting on a regular
  hexagon.

tori.xp:
  Clipping and cropping, page layout.

torus.xp:
  Domains and selective plotting.

trig.flx:
  Trigonometric functions.

twisted_cubic.xp:
  Page layout; a crossed-eyes stereogram of the twisted cubic.

uppersum.xp:
  Riemann sums.

vfield.xp:
  3-D vector field plotting.

weierstrass.xp:
  Loops; a Weierstrass nowhere-differentiable function.

wheel.xp:
  Page layout; a cycloid at successive times.

Files

Name Size Date Notes
Makefile.am 447 2007-09-23 20:51
Makefile.in 9750 2007-10-03 20:46
README 5773 2007-09-23 17:13
R_demo.xp 1356 2007-09-23 19:44
S2_harmonics.xp 1866 2007-10-03 15:51
artifacts.xp 894 2007-07-07 21:10
binom.cc 672 2007-07-05 19:27
bowl.xp 915 2007-07-05 23:09
butterfly.xp 2777 2007-09-22 23:29
calculus.xp 829 2007-08-19 15:14
clipping.xp 4822 2007-10-03 16:42
color_sep.xp 1303 2007-09-22 23:29
conic.xp 1044 2007-09-22 23:29
contour.xp 1381 2007-09-23 17:20
coord_tricks.xp 1031 2007-09-22 23:29
cropplot.xp 607 2007-09-22 23:29
cube.flx 859 2007-09-23 18:14
dataplot.xp 1215 2007-09-23 18:22
decorate.xp 2439 2007-09-23 18:31
demoivre.xp 899 2007-09-23 18:42
denom.xp 894 2007-10-03 17:18
densityplot.xp 689 2007-08-24 22:36
dipole.xp 1823 2007-09-23 19:00
extract.xp 2426 2007-09-22 23:29
geomsum.xp 752 2007-07-20 18:16
golden_rect.xp 408 2007-07-20 18:17
helicoid.flx 2679 2007-09-23 19:06
hello.xp 298 2007-09-23 19:07
histogram.xp 1630 2007-08-24 22:39
house.flx 1691 2007-09-22 23:29
hyperboloid.xp 1472 2007-09-23 06:09
inverse.xp 1241 2007-09-24 14:59
koch.xp 718 2007-09-23 19:18
label_debug.xp 2202 2007-09-25 04:27
layout.xp 630 2007-09-23 19:20
layout2.xp 785 2007-09-23 19:21
legend.xp 1612 2007-09-22 23:29
levelset.xp 972 2007-07-05 19:27
levelset2.xp 1519 2007-08-24 17:31
levelset3.xp 1795 2007-08-24 01:04
lighting.flx 2944 2007-09-22 23:29
lighting.h 2797 2007-07-15 19:14
line_debug.xp 2046 2007-09-19 21:34
lissajous.xp 327 2007-09-23 19:27
log.xp 5924 2007-07-05 19:27
lorenz.xp 1248 2007-07-20 17:10
medians.xp 2385 2007-09-23 19:33
minkowski.xp 2248 2007-07-07 21:39
mirrorball.flx 1678 2007-09-22 23:29
newton.xp 744 2007-07-20 18:18
objects.xp 573 2007-09-01 19:08
oscillator.xp 1714 2007-09-23 19:39
parabola.xp 486 2007-08-24 22:49
pascal.xp 936 2007-09-22 23:29
pendulum.flx 1110 2007-08-03 15:38
planes.xp 409 2007-07-30 14:47
plotting.xp 392 2007-07-05 19:27
plotting2.xp 466 2007-09-01 19:41
plotting3.xp 900 2007-09-22 23:29
polar.xp 449 2007-08-24 22:50
pole.xp 1130 2007-08-31 17:57
polyhedra.xp 1696 2007-07-20 16:40
riemann.flx 1311 2007-07-07 20:49
saddle.xp 1331 2007-08-24 23:17
semicirc.xp 459 2007-07-05 22:13
shadeplot.xp 1156 2007-08-18 19:20
slopefield.xp 467 2007-09-22 23:29
sphere.xp 1228 2007-08-01 21:43
spherical.xp 1641 2007-09-25 04:42
sqrt.xp 826 2007-07-20 18:24
sqrt2.xp 1272 2007-09-22 23:29
std_F.cc 3638 2007-09-23 16:39
std_F.h 2241 2007-09-23 16:34
std_F.xp 2609 2007-09-23 17:07
steiner.flx 911 2007-08-06 23:47
steiner2.flx 1171 2007-08-24 23:32
surface_shade.xp 795 2007-09-22 23:29
symmetries.xp 1676 2007-09-22 05:54
tori.xp 1120 2007-09-23 19:51
torus.xp 589 2007-07-05 19:27
trig.flx 1203 2007-09-23 19:54
twisted_cubic.xp 1736 2007-09-23 19:58
uppersum.xp 577 2007-09-23 20:00
vfield.xp 1835 2007-09-23 20:05
weierstrass.xp 575 2007-07-20 18:26
wheel.xp 917 2007-09-23 20:07
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