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v.digit <main> GRASS Reference Manual <main> v.digit <br /> NAME <br /> v.digit - A menu-driven, highly interactive map development <br /> program used for vector digitizing, editing, labeling and <br /> converting vector data to raster format. <br /> (GRASS Vector Program) <br /> SYNOPSIS <br /> v.digit <br /> DESCRIPTION <br /> The GRASS program v.digit is a menu-driven, highly <br /> interactive map development program used for inputting <br /> analog map data into a GRASS vector format. v.digit <br /> contains programs for vector digitizing, editing, labeling, <br /> windowing, and converting vector data to GRASS raster <br /> format. <br /> v.digit consists of two parts: an initialization procedure, <br /> and a multiple menu-driven environment. <br /> 1) The initialization procedure involves choosing a <br /> digitizer, choosing the name of a vector map layer to <br /> digitize, and, if needed, registering a map to the <br /> digitizing surface. <br /> 2) The second part of v.digit is a multiple-menu environment <br /> in which digitizing, editing, labeling, and other options <br /> are available. It is within this second portion of v.digit <br /> that all vector creation occurs. <br /> NOTES <br /> The GRASS 4.1 version of v.digit has been upgraded so that <br /> it now no longer requires drivers to be written for each <br /> digitizer supported. Instead we are using device <br /> independent code written originally by John Dabritz formerly <br /> of the Forest Service, which uses ascii description files to <br /> define how to communicate with the digitizer. The result is <br /> that we should be able to support just about any digitizer <br /> out there now with a minimum of work. Refer to the <br /> "digitizer definition manual" for information on the format <br /> of these files. <br /> v.digit was written to optimize digitizing speed and <br /> performance. It has a convenient graphic display format and <br /> very convenient windowing capabilities. Features are <br /> color-coded for ease of identification and verification. <br /> Different color schemes may be user-chosen to customize a <br /> digitizing session. <br /> Area, line, and point features may be digitized in both <br /> "stream" and "point" modes. Both a mouse and a digitizer <br /> may be used to perform windowing functions. Labeling and <br /> editing are done from within v.digit, rather than through a <br /> separate set of programs. <br />Page 23 <br />01/03/97 2.03-02 - Lange <br />