Autodesk 15606-011408-9008 User Guide - Page 186

table A set of data with a horizontal dimension (rows/records) and a vertical dimension (columns/fields). A table has a specified number of columns and any number of rows. Tables are typically stored in relational databases (RDBMS), such as Oracle or Access, but can also be stored in files such as Excel spreadsheets and delimited text files. Tagged Image File Format (TIFF) A format for compressing raster images that is widely used and supported. Targa See TrueVision Targa 2.0. template A saved map layer file (.mlf) that you can add to any map. Templates save time, as you can open an existing template (map layer file) and simply modify the properties you want to change, rather than creating a new layer and having to set all of its properties. text A textual description, composed of printable characters, that you define in a map layer. Text entities are often used to label the graphic representations of spatial features. TFW See georeferencing file. TGA See TrueVision Targa 2.0. theme A set of categories that display the map features with different styles and symbols to depict different values. A theme can have categories for a range of values (such as displaying countries in varying colors between black and white to show heavy and light population) and for individual values (such as displaying highways in red and surface streets in black). Examples of themes might be property assessment, housing quality, population density, and average rainfall. TIFF See Tagged Image File Format. ToolTip An online Help feature that displays a brief explanation of a toolbar button when you hold the mouse pointer over the button for more than a second. See also MapTip. TrueVision Targa 2.0 (TGA) A format for compressing raster images also referred to as TARGA. UCS A coordinate system that defines the orientation of the X,Y, and Z axes in threedimensional space. The UCS determines the default placement of geometry in a drawing. UDL See Microsoft Data Link files. UNC See Universal Naming Convention. units The unit of measurement used in all areas where a distance is specified or displayed. You can specify that a map use U.S. units or metric units using the Preferences dialog box in Autodesk MapGuide Author or Autodesk MapGuide Viewer. Universal Naming Convention (UNC) The standard method of specifying the full path name of a file. For example, to specify a file named ROADS.SDF in a folder named SDF on a computer named Data with the share name CDrive, you would type \\Data\CDrive\SDF\ROADS.SDF. If the computer is mapped to a drive letter, you could use the drive letter in the path, such as D:\SDF\ROADS.SDF, but it is safer to use the UNC, just in case, for example, the drive mapping is lost. vertex One of a set of ordered XY coordinates that constitute a map feature. width ratio The ratio of text character width to text character height. For example, if the font size is 20 mm, and the width ratio is 0.5, the width of a text character is 10 mm. 186 | Glossary