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STUTTGART

TECHNIK

Conclusion 

        STUTTGART UNIVERSITY OF APPLIED 

SCIENCES 

4.2 

Summary 

The  summary  of  the  advantage  problems  of  the  developed  client  is  discussed  in  the 

following: 

4.2.1  Advantage   

Web  map  server  has  been  well  developed,  both  theoretically  and  practically.  The 

standard  map  formats  of  web  map  server  are  raster  based.  SVG  format  is  newly 

integrated in digital cartography and begin to be supported by more and more WMS. 

This client can not only display the traditional raster image format PNG, but also the 

SVGT (SVG and SVGB also) format  image. It has the capability to parse  mostly of 

the  GetCapabilities  Requests  XML  document  responded  from  WMS,  which  follow 

the  OGC  WMS  1.1.1  (or  1.1.0)  Implementation  Specification  and  have  the  very 

similar  DTD

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  (Document  Type  Definition).  The  client  can  be  seen  as  one  common 

solution of WMS client points to the mobile devices. 

4.2.2  Outlook 

This  thesis  work  designed  and  implemented  one  WMS  client  for  the  mobile  device. 

Currently  the  function  is  working  well,  and  some  advanced  improvements  can  be 

performed if the work could be continued.   

4.2.2.1 

Capability to parse all GetCapabilities Request XML Document   

Current  client  can  parse  mostly  of  the  GetCapabilities  Requests  XML  document 

responded  from  WMS,  which  follow  the  OGC  WMS  1.1.1  or  1.1.0  Implementation 

Specification and have the very similar DTD. That means if one WMS uses DTD that 

very  different  from  the  standard,  the  parser  will  stop  parsing.  For  example,  the 

following  2  Listings,  are  one  part  of  the  same  element  of  two  different  XML 

document.  The  format  types, 

WMS_XML

  and 

INIMAGE

  in  tag 

Format

  should  be 

picked up. 

15

  A Document Type Definition defines the legal building blocks of an XML document. It defines the 

document structure with a list of legal elements. 

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