The invention relates to the technical field of embedded maps, and provides a
vector map display method under a VxWorks
system, which comprises the following steps: S1, analyzing a
vector map source file through an MITAB
library, and extracting
geometric space topological data,
geographic coordinate system parameters, style attributes and projection parameters; s2, constructing a hierarchical
storage structure based on SQLite3, and storing
vector map information including a spatial data table, a style configuration table and a
metadata table into a geographic information
database; s3, creating a map display control MapWidget inherited from a QGraphics View class based on a Qt framework, loading the geographic information
database through a dynamic configuration interface, and initializing a coordinate
system conversion module, a multi-level view window module and a covering
management system; and S4, dynamically rendering and outputting an interactive vector map interface through a layer
priority scheduling strategy in a VxWorks real-time
operating system. Through the design of the cross-platform data middle layer, the extensible general symbology
system and the
resource efficiency optimization, the data compatibility problem of the
embedded system and the commercial GIS
software is solved.