A computer implemented method or system including a map conversion toolkit and a map Population toolkit. The map conversion toolkit allows one to quickly trace the layout of a floor plan, generating a file (e.g., GeoJSON file) that can be rendered in two dimensions (2D) or three dimensions (3D) using web tools such as Mapbox. The map population toolkit takes the scan (e.g., 3D scan) of a room in the building (taken from an RGB-D camera), and, through a semi- automatic process, generates individual objects, which are correctly dimensioned and positioned in the (e.g., GeoJSON) representation of the building. In another example, a computer implemented method for diagraming a space comprises obtaining a layout of the space; and annotating or decorating the layout with meaningful labels that are translatable to glanceable visual signals or audio signals.