Spatial Cloud Computing with Google Maps API - CISC

Spa$al  Cloud  Compu$ng  using   Google  Maps  API   Michael  P.  Peterson   Nebraska  -­‐  Omaha  

Introduc$on   •  We  can  all  agree  that  many  GIS  tasks  that  are   now  done  on  desktop  computers  with   specialized  soDware  will  eventually  be  done  in   the  cloud.   •  Development  of  cloud  compu$ng  has  parallels   to  computer  mapping  /  GIS  in  the  1970s.   •  Computer  mapping  preceded  GIS.     –  Integra$on  with  databases,  analy$cal  tools  

Computer  mapping  to  GIS   •  Map  mashups  with  APIs  is  the  computer  mapping   stage  of  cloud  compu$ng   –  Presen$ng  data  with  maps   –  Mashups  as  thema$c  maps   –  Underlying  maps  from  Google  servers  but  data  being   mapped  usually  on  local  server  

•  Now,  integra$on  with  databases   •  How  to  integrate  into  the  cartography  /  GIS   classroom?   –  Book:  Maps  and  the  Internet:  Theory  and  Prac3ce  

In  the  classroom  …   •  Development  of  cloud  compu$ng  is  based  on   what  we  can  teach   •  Audience  –  students  with  oDen  have  limited   programming  background   •  Purpose  is  not  to  make  programmers   –  Create  an  understanding  of  the  technology   –  Provide  tools  to  allow  the  building  of  applica$ons   –  Develop  a  concep$on  of  what  is  possible  

FOSS   •  Free  and  open  source  soDware   •  Advantages  for  educa$on   –  No  need  to  acquire  licenses,  funding   –  ArcGIS  funding  experience  

•  Emphasize  concepts,  not  training  on   commercial  soDware   –  Universi$es  as  agents  of  ESRI  

•  Is  open  source  more  expensive?  

Core  concepts   •  •  •  •  •  •  •  •  •  •   

The  Internet  map  landscape   Meaning  of  mapping   Development  of  maps  through  $me   Map  scale  and  abstrac$on   Maps  by  computer  and  GPS   Points  and  point  data   Lines  and  polygons   Layers  of  informa$on   Databases   Local  mapping  

Core  technologies   •  •  •  •  •  •  •  • 

HTML   JavaScript   Google  Maps  API,  Fusion  Tables   XML   GeoRSS   PHP   MySQL  with  spa$al  extensions   App  development,  both  iOS  and  Android  

Interleaving  core  concepts  and  core   technologies   •  Two  classroom  environments   –  One  mee$ng  a  week  with  no  computers,  no  wifi,   no  mobile  technology,  no  tex$ng   •  Seminar  or  lecture,  depending  on  class  size  

–  One  mee$ng  a  week  in  a  computer  room,   demonstra$on  but  no  lecture   •  Individual  and  dis$nc$ve  web  pages/resources  created   in  a  group  environment.  

Web  page  development   For  everyone  to  see  -­‐  

Point  Maps   •  Single  points   –  Markers   –  Type,  size,  posi$oning  

•  Source  of  data   –  XML  files   –  GeoRSS   –  Fusion  Tables   –  MySQL  database  

Lines  and  polygons   •  Straight  and     geodesic  lines  

•  Graduated  lines   •  Polygons  

Layers   •  Image  on  Map  

•  Image  on  Image    

Layers   •  Map  on  Map    

Cost  of  Iowa  Farmland  

Free  Webhos$ng  

cpanel  

Files  and  databases  

PHP   Server-­‐based  scrip$ng  language  

Query