This article is from the Geographic Information Systems FAQ, by Lisa Nyman email@example.com with numerous contributions by others.
- Hybrid vector/raster map server for user-written client applications -
megatelVISOR enables the user to perform complex manipulations of
text and graphics data against a map background.
The core of megatelVISOR is a so-called "VIEWER" which allows to
record, store and recall maps (drawings, pictures, charts, etc. )
of any magnitude. The magnitude of the scanned maps is only limited
by mass-storage capability restrictions.
The map-data input, i.e. the scanning of the graphic mass data
(maps, plans, aerial reconnaissance photos, etc.), can be done by a
standard scanner . The data are then compressed and stored on hard
disk or CD. The handling of the scanning process and the storage is
very simple, so that non-technical users may scan the maps without
difficulties. The stored maps can be accessed from MS-DOS and UNIX
UNIX users of megatelVISOR via network.
megatelVISOR via network.
megatelVISOR supplies diverse functions for graphic vector editing
on the map (drawing, moving, copy/paste, colouring, hatching etc)
that are provided by standard graphics systems running under
MS-WINDOWS 3.1, NeXTSTEP, OpenStep and X-WINDOWS, Windows NT.
The input for the generation of the vector layers is possible from
the workstations manual I/O facilities (keyboard and mouse) as well
as the import of vector data from ASCII delimited format (DXF and
The vector-management system of megatelVISOR 1.5 consists of a
new geometrical-database, based on a reorganisation-free
v-tree-index procedure that provides a very fast access even when
there is a very high number of vector objects to handle.
Features of the resulting map (basic rastered map plus vector layers)
are configurable from menue, which is adapted and similar to that
of the graphical user interface GUI (e.g. MS-WINDOWS, NeXTSTEP,
MOTIF ) so that non-technical users can perform all editing
megatelVISOR is a universal front-end for graphical applications.
The VIEWER exchanges messages with other applications via DDE
(MS-WINDOWS VIEWER) TCP/IP and Distributed Objects (UNIX Viewers).
This includes external control of viewing functions, drawing by
other applications as well as editing these (or new) objects in the
VIEWER and sending them to the appropriate application.
The incorporation of data files compatible with ASCII delimited
format is possible. By (Mouse-Click-) adressing a layers graphical
information (i.e. point,polygon or area) the target information of
the database (or the text processor) will be searched and displayed
with all stored attributes. Reversely the results of database
manipulations may be displayed on the layer/map.
Possible applications include technical documentation and land
Prices (1Q1996) DM 7800.00 plus VAT.
The program package megatelVISOR consists of several parts.
Item prices in Deutsche Mark (DM) are given without VAT:
Number of licenses 1 2-9 10 and more Viewer 3950 3550 3250 Toolbox 3950 3550 3250