METHOD FOR EXTRACTING AND ANALYZING SPATIAL INFORMATION OF RAIL TRANSPORT CONTROL PROTECTION ZONE HAVING MULTIPLE THRESHOLD CONSTRAINS

摘要

A method for extracting and analyzing spatial information of a rail transport control protection zone having multiple threshold constraints, comprising the following steps: 1. converting the format of a data file and extracting multiple coordinate points; 2. selecting a key point in the multiple coordinate points for data thinning processing to produce a thinned range line and a structural periphery; 3. comparing spatial relations of the thinned range line, the structural periphery, and a thinned construction red line by calling a database via a program and by reading data; 4. determining, on the basis of the result of the spatial relation comparison, whether the construction of a rail-related construction project intrudes a rail transport control protection zone, and completing the extraction and analysis of internal spatial information of the rail transport control protection zone. This solves the technical problem of a large computational load and slow computation speed when analyzing the spatial information of a rail transport control protection zone.