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Architecture 
...
 outline
...
The 
...
 architecture 
...
 outline 
...
 of 
...
 Delta 
...
 Shell 
...
 is 
...
 shown 
...
 in 
...
 the 
...
 figure 
...
 below. 
...
 As 
...
 can 
...
 be 
...
 seen 
...
 from 
...
 the 
...
 figure, 
...
 Delta 
...
 Shell 
...
 consists 
...
 of 
...
 a 
...
 set 
...
 of 
...
 common 
...
 class 
...
 libraries, 
...
 mainly 
...
 representing 
...
 different 
...
 domains 
...
 and 
...
 software 
...
 standards 
...
 such 
...
 as:
...
  • geospatial 
...
  •  libraries 
...
  •  (geometries, 
...
  •  features, 
...
  •  coverages);
...
  • hydrographic 
...
  •  libraries 
...
  •  (hydro 
...
  •  regions, 
...
  •  hydro 
...
  •  networks, 
...
  •  drainage 
...
  •  basins, 
...
  •  hydro 
...
  •  areas, 
...
  •  hydraulic 
...
  •  structures 
...
  •  and 
...
  •  other 
...
  •  hydrographic 
...
  •  features);
...
  • scientific 
...
  •  libraries 
...
  •  (units, 
...
  •  multi-dimensional 
...
  •  arrays, 
...
  •  variables);
...
  • storage 
...
  •  libraries 
...
  •  (NetCDF, 
...
  •  SQLite 
...
  •  and 
...
  •  support 
...
  •  for 
...
  •  many 
...
  •  other 
...
  •  file 
...
  •  formats 
...
  •  such 
...
  •  as 
...
  •  CSV, 
...
  •  WaterML2, 
...
  •  Shapefile, 
...
  •  file 
...
  •  formats 
...
  • supported by GDAL);
...
  • workflow 
...
  •  libraries 
...
  •  (simple 
...
  •  and 
...
  •  composite 
...
  •  workflow 
...
  •  activities, 
...
  •  support 
...
  •  for 
...
  •  parallel 
...
  •  and 
...
  •  sequential 
...
  •  run 
...
  •  modes);
...
  • scripting 
...
  •  support 
...
  •  (based 
...
  •  on 
...
  •  IronPython);
...
  • general 
...
  •  application 
...
  •  framework 
...
  •  libraries 
...
  •  (Application, 
...
  •  Gui).
...
These 
...
 general 
...
 framework 
...
 class 
...
 libraries 
...
 define 
...
 on 
...
 a 
...
 very 
...
 high 
...
 level 
...
 how 
...
 a 
...
 typical 
...
 console 
...
 or 
...
 graphical 
...
 user 
...
 interface 
...
 application 
...
 is 
...
 constructed. 
...
 They 
...
 also 
...
 define 
...
 how 
...
 different 
...
 parts 
...
 of 
...
 the 
...
 environment 
...
 can 
...
 be 
...
 extended 
...
 by 
...
 means 
...
 of 
...
 plugins. 
...
 This 
...
 includes 
...
 both:
...
  • non-gui 
...
  •  plugins, 
...
  •  providing 
...
  •  new 
...
  •  data 
...
  •  types 
...
  •  or 
...
  •  computational 
...
  •  models 
...
  •  to 
...
  •  the 
...
  •  system, 
...
  •  and;
...
  • gui 
...
  •  plugins, 
...
  •  providing 
...
  •  components 
...
  •  used 
...
  •  to 
...
  •  visualize 
...
  •  different 
...
  •  data 
...
  •  and 
...
  •  model 
...
  •  configurations.
...
The 
...
 bottom 
...
 line 
...
 is 
...
 that 
...
 Delta 
...
 Shell 
...
 is 
...
 a 
...
 flexible 
...
 framework 
...
 which 
...
 can 
...
 be 
...
 easily 
...
 extended 
...
 by 
...
 means 
...
 of 
...
 plugins 
...
 or 
...
scripts.   

 Image Added
Background readings on Delta Shell 
Unfortunately, there is currently no complete set of documentation available for the Delta Shell components and interfaces. Additionally, the documentation that is available quickly becomes obsolete as development of Delta Shell progresses further.
Nevertheless, some background papers are available that are recommended for new Delta Shell developers to read before proceeding with any tutorials or exercises:
Links to used open-source libraries 
Additional information that might be useful concerns readings on the open source libraries that are used by Delta Shell. These readings can be found at their repositories on the Internet:
...
  • )
...
  • GeoAPI.NET 
...
  •  (
...
...
  • )
...
  • NetTopologySuite 
...
  •  (
...
...
  • )
...
  • SharpMap 
...
  •  (
...
...
  • )
...
  • NHibernate 
...
  •  (
...
...
...
  • )
  • Mono.Addins 
...
  •  (
...
...
...
  • )
...
  • protobuf-net 
...
  •  (
...
...
...
...
  • )
GeoAPI.NET 
...
 and 
...
 NetTopologySuite 
...
 are 
...
 used 
...
 closely 
...
 together 
...
 and 
...
 have 
...
 each 
...
 been 
...
 extended 
...
 by 
...
 Deltares 
...
 to 
...
 develop 
...
 support 
...
 for 
...
 geospatial 
...
 Features 
...
 and 
...
 Coverages.
...
SharpMap 
...
 is 
...
 the 
...
 Map 
...
 UI 
...
 component 
...
 used 
...
 by 
...
 Delta 
...
 Shell. 
...
 It 
...
 has 
...
 been 
...
 extended 
...
 by 
...
 Deltares 
...
 in 
...
 a 
...
 separate 
...
 branch 
...
 that 
...
 can 
...
 be 
...
 found 
...
 at 
...
 the 
...
 SharpMap 
...
 repository 
...
 (
...
http://sharpmap.codeplex.com/SourceControl/latest#Branches/0.9.5-DeltaShell
...
).
...
For 
...
 NetCDF
...
, the 
...
 plain 
...
 C 
...
 API 
...
 is 
...
 used 
...
 (for 
...
 optimal 
...
 performance), 
...
 which 
...
 is 
...
 integrated 
...
 via 
...
 a 
...
 .NET 
...
‘wrapper’ in 
...
 the 
...
 DelfTools.Utils.NetCDF 
...
 library. 
...
 The 
...
 C# 
...
 wrapper 
...
 classes 
...
 are 
...
 quite 
...
 similar 
...
 to 
...
 but not exactly modelled after the NetCDF Java API. 


 not exactly modelled after the NetCDF Java API.
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