We present a visual language for querying and transforming XML data. The language is based on a visual document metaphor and the notion of document patterns and rules. It combines a dynamic form-based interface for defining queries and transformation rules with powerful pattern matching capabilities and offers thus a highly expressive visual language. The design of the visual language is specif...

In order to solve outdoor mobile robots’ dependence on geographic information systems, and realize automatic navigation in the face of complex changeable scenes, we propose a method that selects landmark adds prompt guidance so robot can navigate relying visual-language memory. Visual-language guide direction robot’s movement, obeying annotation people according its memory scene, which refers s...

Visual languages play an important role in modelling systems, in speci cation of software, and in speci c application domains. A processor for a visual language consists of a graphical frontend attached to phases that analyse and transform visual programs. Therefore, the construction of a visual language processor requires a wide range of conceptual and technical knowledge: from issues of visua...