Co-operative Research of General Purpose FORTRAN Graphic Software System for Scientific Computation

本课题的目的是开发一种通用软件，可以在图形显示器或PostScript打印机上方便地图形显示科学计算的结果，如函数图、梯度向量场、等高线图、三维图形等。除本系统与XWindow系统之间的几个接口子程序用C语言编写外，源程序均用FORTRAN77语言编写。本文还介绍了在XWindow系统上运行的GKS和CALCOMP图形内核子程序。我们按照最初的计划开发了软件。完成了XWindow系统上GKS和CALCOMP图形内核子程序，以及函数图、梯度矢量场、等高线图、三维图形显示的各种子程序。此外，为了便于系统的使用，还利用Tcl/Tk编写了系统与用户之间的接口程序。子程序库还包括计算适合于每个显示的坐标系和基于矩形网络或三角形网络等上的数值数据计算3D图形的子程序。用户可以很容易地改变图形显示的位置、大小和视点。该系统以首席调查员的名字命名为moriplot。

The purpose of this research project is to develop a general purpose software for easy graphical display of the result of scientific computation like function graphs, gradient vector fields, contour maps, 3D figures, on a graphic display or on a PostScript printer, etc. Source programs are written in FORTRAN77 except several interface subroutines between the present system and the XWindow system which are written in C language. Graphic kernel subroutines of GKS and CALCOMP working on the XWindow system are also included.We developed the software as initially planned. Graphic kernel subroutines of GKS and CALCOMP on the XWindow system and various subroutines for display of function graphs, gradient vector fields, contour maps, 3D figures are completed. In addition to that, an interface program between the present system and the user using Tcl/Tk is also completed for easy use of the system. The subroutine library also includes subroutines that compute a coodinate system appropriate to each display and that compute a 3D figure based on numerical data over a rectangular network or over a triangular network, etc. The user can easily cange the location, the size and the viewpoint of the figure on the graphic display. The system is called moriplot after the name of the head investigator.