Svgviewer r
In this paper we present the Web based framework that provides efficient management, tracking and displaying of data about mobile objects in Web based Geographic Information Systems (Web GIS) and Location Based Services (LBS) applications built on top of it. The concepts are demonstrated in a prototype running on PocketPC-based PDAs. We extend XForms to support interactive manipulation and input of geometric features by the user or by sensors. The XForms standard of the World Wide Web consortium addresses non-spatial user input embedded in documents (much like form elements in HTML-documents). Furthermore, LBS interact with the user to enter, edit or query spatial or non-spatial data. We propose a restriction/extension SVG ±geo which addresses the special needs of SVG for GIS. On the other hand, typical features of GIS only can be modeled by large scripts or not at all in SVG. As it is mainly developed with a focus on multimedia presentations, there are several aspects of SVG which are not required for the representation of geographic data (i.e. The XML-based "Scalable Vector Graphics (SVG)" plays a growing role in vector graphic representations on the internet. Especially in the domain of LBS, the reduced storage requirements and the "intelligence" of vector data with respect to user interaction make vector formats an ideal choice for a broad range of applications.
![svgviewer r svgviewer r](https://i.ytimg.com/vi/kHHb6xokRVU/maxresdefault.jpg)
Again, classes representing geometric primitives as in Java 2 are missing.Ĭompared to raster data, vector formats show several advantages for the representation of maps.
![svgviewer r svgviewer r](https://windows-cdn.softpedia.com/screenshots/Aurora-SVG-Viewer-Converter_2.png)
The coordinates must be integer numbers-the floating-point types float and double are not supported by the MIDP! Thus, affine transformations are not provided. The MIDP version 2.0 added the support of filled triangles. The included class Graphics allows drawing and filling rectangles, ovals, and circular or elliptical arcs, and drawing line segments, bitmaps, and texts-the filling of polygons is not supported. The classes for the user interface are bundled in the package. The package is replaced by the package that supports network connections. The class library is a very limited subset of the Java 2 class library. A two-way, wireless networking with limited bandwidth is expected. The minimum memory requirements are 128 KB (version 1.0) or 256 KB (version 2.0) of non-volatile memory for the MIDP components, 8 KB of non-volatile memory for applicationcreated persistent data, and 32 KB (version 1.0) or 128 KB (version 2.0) of volatile memory for the Java runtime. "One-handed" keyboards like the keyboard of a phone, "two-handed" keyboards like a computer keyboard, and / or touch screens are expected.
![svgviewer r svgviewer r](https://windows-cdn.softpedia.com/screenshots/Aurora-SVG-Viewer-Converter_1.png)
The minimum hardware requirements of the MIDP include a 96x54 display with an aspect ratio of approximately 1:1.