All-in-One Lightweight GIS Platform

QML (Qt Meta-Object Language) layer style file is a file format used to define map layer styles. It is one of the domain-specific languages used in the Qt framework to describe and customize the appearance and behavior of UI elements.

MIF (MapInfo Interchange Format) is a vector data format used by MapInfo software to store the geometry and attribute information of geographic features. MapInfo is a commonly used geographic information system (GIS) software, and MIF files are one of its common data exchange formats.

SID (MrSID, Multi-Resolution Seamless Image Database) is a raster data format specially designed for the storage and distribution of geospatial images, developed by LizardTech in the United States. It is well-known for its efficient image compression technology and is widely used in industries that need to store and transmit large-scale image data, such as geographic information systems (GIS), remote sensing, and mapping.

**SDB **(Spatial Database) is a data format used to efficiently store, manage, and parse geospatial data. It is usually one of the file geodatabase formats used in ESRI’s ArcGIS platform, and can store a large amount of geographic information in a structured manner. SDB is widely used in vector and raster data management in geographic information systems (GIS) and is suitable for large-scale spatial data processing and visualization.