XYZ_PLOT
Interactive Graphics

XYZ_PLOT is a FORTRAN90 program which tries to take simple input from the user and display some interesting data on the screen.

Licensing:

The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.

Languages:

XYZ_PLOT is available in a FORTRAN90 version.

Related Data and Programs:

ANYPLT, a FORTRAN90 library which served as a generic interface between FORTRAN90 programs and various graphics output devices and files.

XYZ, a data directory which contains examples of XYZ files, a simple 3D graphics point and line format;

XYZ_DISPLAY, a MATLAB program which reads XYZ information defining points in 3D, and displays an image in the MATLAB graphics window.

XYZ_DISPLAY_OPENGL, a C++ program which reads an XYZ file of 3D point coordinates, and displays an image of those points using OpenGL.

XYZ_TO_PDB, a FORTRAN90 program which reads a set of XYZ spatial coordinates, and rewrites them as ATOM records in a PDB file.

XYZF, a data directory which contains examples of XYZF files, a simple 3D graphics point and face format;

XYZF_DISPLAY, a MATLAB program which reads XYZF information defining points and faces in 3D, and displays an image in a MATLAB graphics window.

XYZF_DISPLAY_OPEN_GL, a C++ program which reads XYZL information defining points and faces in 3D, and displays an image using OpenGL.

XYZL, a data directory which contains examples of XYZL files, a simple 3D graphics point and line format;

XYZL_DISPLAY, a MATLAB program which reads XYZL information defining points and lines in 3D, and displays an image in a MATLAB graphics window.

XYZL_DISPLAY_OPENGL, a C++ program which reads XYZL information defining points and lines in 3D, and displays an image using OpenGL.

Source Code:

• xyz_plot.f90, the source code.
• xyz_plot_nul.sh, commands to compile the source code and link it with the "anynul" (no graphics) graphics package.

List of Routines:

• XYZ_PLT is the main program.
• ANGLE_RAD_3D returns the angle in radians between two rays in 3D.
• ARROW returns points that specify an arrow from one point to another.
• C_CAP capitalizes a single character.
• C_EQI is a case insensitive comparison of two characters for equality.
• C_IS_ALPHA returns TRUE if C is an alphabetic character.
• C_TO_DIGIT returns the integer value of a base 10 digit.
• CAU draws a caustic plot.
• CHKDAT prints out the value of the data.
• CHKVAL prints out the value of the plot points.
• COMRPN can translate formulas you type in and evaluate them.
• CONV3D converts 3D data to a 2D projection.
• DATA_TO_DIF sets up a divided difference table from raw data.
• DHPSRT sorts points into lexicographic order.
• DIAEDG chooses a diagonal edge.
• DIF_VAL evaluates a divided difference polynomial at a point.
• DIGIT_TO_C returns the character representation of a decimal digit.
• DLESS determines whether P is lexicographically less than Q.
• DOT0_3D computes the dot product of (P1-P0) and (P2-P0) in 3D.
• DRWPLT displays the graph.
• DSFTDW shifts A(*,MAP(L)) down a heap of size U.
• DTRIS2 constructs a Delaunay triangulation of 2-D vertices.
• ENORM0_3D computes the Euclidean norm of (P1-P0) in 3D.
• ENORM_ND computes the Euclidean norm of a vector in ND.
• EVALF gets a formula from the user and evaluates it.
• FFXY sets up data for F(X,Y)=0 plots.
• FILE_DELETE deletes a named file if it exists.
• FUNSCL evaluates a scalar function of one or more scalar arguments.
• FUNVAL evaluates a scalar, vector or matrix valued function.
• FXY computes points on a implicit curve defined by F(X,Y) = 0.
• GET_UNIT returns a free FORTRAN unit number.
• GETDAT gets information from the user defining the data vectors.
• HELLO reports the program name, and other information.
• I_GCD finds the greatest common divisor of I and J.
• I_LCM computes the least common multiple of two integers.
• I_SWAP swaps two integer values.
• I_TO_S_ZERO converts an integer to a string, with zero padding.
• INICOM initializes data for COMRPN.
• LEAST_SET constructs the least squares polynomial approximation to data.
• LEAST_VAL evaluates a least squares polynomial defined by LEAST_SET.
• LINE_SEG_CONTAINS_POINT_1D reports if a line segment contains a point in 1D.
• LRLINE determines where a point lies in relation to a directed line.
• LSQTXY sets up a parameterized least squares polynomial plot.
• LSQXY sets up the data defining a least squares polynomial plot.
• NEWTON applies Newton's method to solve F(X,Y)=0, with X or Y fixed.
• OPTION ...
• PI returns the value of pi.
• PLANE_EXP2IMP_3D converts an explicit plane to implicit form in 3D.
• PLANE_EXP_PROJECT_3D projects points through a point onto a plane in 3D.
• PLANE_IMP_POINT_NEAR_3D: nearest point on a implicit plane to a point in 3D.
• POINTS_DIST_3D finds the distance between two points in 3D.
• PROPLANE2 produces 2D coordinates of points that lie in a plane, in 3D.
• PROPLANE3 projects points orthographically onto a plane, in 3D.
• PWP sets up the data defining a piecewise polynomial plot.
• R2_CHEBY sets up the Chebyshev abscissas in a real interval.
• R_NEXT "reads" real numbers from a string, one at a time.
• R_TO_S_LEFT writes a real into a left justified character string.
• RPNCHK examines an RPN formula, looking for a complete RPN expression.
• RPNSET converts the infix formula into an RPN formula.
• RPNVAL evaluates the symbolic functions in an RPN formula.
• RVEC_BRACKET searches a sorted array for successive brackets of a value.
• RVEC_DISTINCT is true if the entries in a real vector are distinct.
• RVEC_EVEN returns N real values, evenly spaced between ALO and AHI.
• RVEC_EVEN_SELECT returns the I-th of N evenly spaced values in [ XLO, XHI ].
• RVEC_UNIT_EUCLIDEAN Euclidean normalizes a vector in ND.
• S3_FS factors and solves a tridiagonal linear system.
• S_BLANK_DELETE removes blanks from a string, left justifying the remainder.
• S_BLANKS_DELETE replaces consecutive blanks by one blank.
• S_CAP replaces any lowercase letters by uppercase ones in a string.
• S_EQI is a case insensitive comparison of two strings for equality.
• S_IS_ALPHA returns .TRUE. if the string contains only alphabetic characters.
• S_PAREN_CHECK checks the parentheses in a string.
• S_TO_R reads a real number from a string.
• SPLINE_CUBIC_SET computes the second derivatives of a cubic spline.
• SPLINE_CUBIC_VAL evaluates a cubic spline at a specific point.
• STAR draws a star.
• SWAPEC swaps diagonal edges in a 2-D triangulation.
• SXY sets up a cubic spline ( X, S(X) ), interpolating given data.
• SYMADD adds a symbol name to the list of symbolic names.
• SYMVAL sets, evaluates, or deletes a variable.
• TOKENS parses a character string into recognized symbols and constants.
• TRICON draws a contour line of a scalar quantity.
• VBEDG determines which boundary edges are visible to a point.
• VECTOR_UNIT_ND normalizes a vector in ND.
• XYS computes splines through X and Y data.
• XYZ_WRITE writes graphics data to an XYZ file.

You can go up one level to the FORTRAN90 source codes.