SIG with XML 2

    First subset from XML is SVG ( Scalable Vector Graphics). SVG needed by SIG to present the data which is the in form of spasial. For SIG, perhaps needed a format for the appearance of data of spasial or data presented visually. Because XML have the character of the general, hence for graphical introduced [by] a subset XML that is SVG ( Scalable Vector Graphics), a standard opened for the graph of 2D representing recommendation from < a target="_blank" href="www.w3.org"> W3C </ a>

    Use SVG on SIG have given the impact especially to application webmap. SVG enable the use vektor giving a lot of excellence compared to format raster which during the time we recognize the. SVG also provided with the SVG DOM ( Document Object Model) to make a map of which interaktif. There are also the specification of for the mobile of devices ( SVG Tiny) and browser phones ( pSVG). SVG also earn the compress so that degrade the size measure transfer by signifikan.

    Ably SVG to load the data vektor, bitmap and text, one would assume only by SVG have enough. And it's true in this time have a lot of example  webmap using SVG, good to appearance and data figured in.

    Although that way, there are some matter which not covered in specification SVG. For example hitting standard of link feature to data, used reference spasial system, feature buffer or standard of scheme of data spasial. It's true intentionally not to be included because SVG is a graphical format public which don't use only for the application of SIG, so that data transfer openly will be complicated if only rely on the SVG. Is for that needed other subset XML, that is GML. Read the solution of concerning GML in next article,