A fast method of generating flood avoidance transfer map based on gis

Abstract

The invention discloses a method for rapidly generating a GIS-based anti-flood transfer map. The method comprises the following steps of: obtaining a basic geographic element map layer, a water conservancy project element map layer and a flood submerging map layer; generating anti-flood transfer elements including a danger area, a resting place, a transfer unit and a transfer path map layer; and, sequentially superposing the flood submerging map layer, the basic geographic element map layer, the water conservancy project element map layer and an anti-flood transfer element map layer from bottom to top, signifying the various map layers, adding label and surface finishing elements into the topmost layer, and generating an anti-flood transfer map. By means of the method disclosed by the invention, the drawing process of the anti-flood transfer map is modularized; the drawing operation is simplified; therefore, the drawing manpower and material resources can be greatly reduced; the uncertainty and the inaccuracy of artificial judgment and identification are reduced; and the demand of generating the anti-flood transfer map accurately and rapidly in an emergency flood event scene can be satisfied.

Description

technical field [0001] The invention belongs to the technical field of disaster avoidance and geographic information system drawing, and in particular relates to a method for quickly generating a GIS-based flood avoidance transfer map. Background technique [0002] In recent years, extreme weather events have occurred frequently, and flood disasters have increased. Flood avoidance and transfer refers to the use of existing traffic road networks and flood control facilities to formulate effective emergency strategies according to different flood disaster situations, optimize emergency transfer management plans, and further improve the regional resilience to flood disasters, thereby reducing flood disasters. casualties and property damage. Flood avoidance and transfer map refers to a map that clearly marks information such as dangerous areas, transfer units, resettlement areas, and transfer routes and directions. The flood avoidance transfer map can visually display the abov...

Images