SHARP PC-1500地形图分幅编号及其元素计算程序

本文编制的程序,不但可以根据某地的坐标(大地坐标或平面直角坐标)求出它所在的各种比例尺图的编号或根据图幅编号反求出图的比例尺分母:而且能够同时算出图幅四个角点的坐标(大地坐标及平面直角坐标)、图幅尺寸及其所代表的面积。另外还能进行坐标换带计算完全免除了人工计算的繁琐和查表的麻烦既给地形图生产和管理部门带来了极大的方便,又可以取代《大比例尺图廓坐标表》和《高斯——克吕格坐标换带表》的使用,从而结束了这两种表格的历史使命。

MAP SHEET NUMBERING AND THE PROGRAM OF ITS ELE MENTS CALCULATIONS

The problems arranged in this paper can either find out the sheet-number of maps in different scales by the coordinares of a place(geodetic or plane right angle coordinate)or in the reverce,find out the scale of map by its sheet number and it can also find out the coordinate(geodetic or plane right angle) of four corners of the map sheet,its dimensions and the area represented.Further more,it can make conversions between the coordinates of nearby Gauss projection belts.Thus people can avoid the tedious calculations and table look up.It makes high conveniences to map producers and management staffs,Its presence substitute the use of the“Tables of coordinate of large scale maps”and“the tabies of coordinate conversion between near by Gauss Krüger belts”so to eliminate their usage.