GRAPHICS_EXAMPLES, FORTRAN77 programs which illustrate how various kinds of data can be displayed and analyzed graphically.
These programs rely on the DISLIN package to set up the graphics output.
The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.
GRAPHICS_EXAMPLES programs are available in a C version and a C++ version and CONVERT and a dataset version and a FORTRAN77 version and a FORTRAN90 version and GNUPLOT and GRACE and a MATHEMATICA version and a MATLAB version.
DISLIN, FORTRAN77 programs which illustrate the use of DISLIN, a scientific graphics package, by Helmut Michels.
CIRCLE_INOUT depicts 500 pairs of (X,Y) data points in the unit square, 395 of which lie inside the unit circle, and 105 outside. If possible, the "inside" points should be blue, the "outside" points red, and the circle itself should also be drawn.
GEYSER contains the waiting time in minutes between successive eruptions of the Old Faithful geyser. 299 values are recorded. The data ranges from 43 to 108. It should be displayed in 14 bins of width 5 from 40 to 110. The data comes from Martinez and Martinez.
LISSAJOUS records 1000 points on a Lissajous curve defined by x=sin(3*t+pi/2), y=sin(4t). The curve is to be plotted and every tenth point marked.
LYNX records the yearly lynx harvest from 1821 to 1934. The graph should plot the data points as circles, and connect consecutive data points with straight line segments to suggest a curve.
ORBITAL records, on a 101x101 grid over [0,4*pi]x[0,4*pi], the minimum distance between two planets given a pair of orbital angles. A contour plot of this data is to be presented.
SCATTER_PLOT generates 500 pairs of (X,Y) data, which lie in the unit square, and tend to cluster around (0.5,0.5).
SURFACE_GRID records, on a 41x41 grid over [-2,2]x[-2,+2], the values z = exp(-(x^2+y^2)) * cos(0.25*x) * sin(y) * cos(2*(x^2+y^2)). The data is to be plotted as a surface.
You can go up one level to the FORTRAN77 source codes.