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Wide Open Spaces: MySQL as a Web Mapping Service Backend Don Beesing Alion Science and Technology USJFCOM Experimentation Modeling and Simulation April.

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Presentation on theme: "Wide Open Spaces: MySQL as a Web Mapping Service Backend Don Beesing Alion Science and Technology USJFCOM Experimentation Modeling and Simulation April."— Presentation transcript:

1 Wide Open Spaces: MySQL as a Web Mapping Service Backend Don Beesing Alion Science and Technology USJFCOM Experimentation Modeling and Simulation April 22, 2009

2 Overview Going to show MySQL in one aspect of GIS World Security Restrictions Feel free to ask questions

3 Problem Experiment based environment How to share geospatial information Many different government organizations Disparate systems on each site Fallback systems to use

4 Solution WMS (Web Mapping Service) OpenGIS Standard Http request returns images Can be a queryable service

5 Constraints Typical commercial setup Timing & dollar issues Unofficial open source policy Our idea MySQL & MapServer

6 Diagram of Implementation HTTPDServer MapServer CGI Users with access to WMS Publishing Users without access to WMS Publishing COPCOP/WMS Server WMS Feed HTTP Feed MySQL Server Point and click GUI

7 MySQL Already a key component of lab Proof of concept Stubbornness of lab manager

8 MySQL Implementation Schema setup – geometry type Parent/child tables for updates Roads not taken – Shapefile import

9 MapServer Open source Standards compliant OGR connector to link w/MySQL Standards version issues Reliance on linked WFS

10 MapServer Format Example Meta Data Header WEB METADATA "wms_title" "J9 Noble Resolve WMS Server" "wms_onlineresource" "https://yoursite.com/mapserv?map=nr.map&" "wms_srs" "EPSG:4269 EPSG:4326" "wfs_title" "J9 Noble Resolve WFS Server" "wfs_onlineresource" "https://yoursite.com/mapserv?map=nr.map&" "wfs_srs" "EPSG:4326" END

11 Format Example Layer Info LAYER CONNECTIONTYPE OGR CONNECTION "MYSQL:noble_resolve_08,user=test,password=test,host= ,port=3306" DATA "SELECT geom,id,max(update_id) as `update_ref`,object_title,IF(u.description IS NULL, g.description, u.description) as `description`, IF(u.attachments IS NULL, SUBSTRING_INDEX(SUBSTRING(g.attachments,2),',',1), SUBSTRING_INDEX(SUBSTRING(u.attachments,2),',',1)) as `Attachment` FROM geoint g LEFT JOIN geoint_updates u ON id=record_id WHERE object_type IN ('POINT','MULTIPOINT') AND incident_type='fire' GROUP BY id, update_id;" NAME "fire_points" METADATA ##wms metadata "wms_title" "fire_points" "wms_author" "USJFCOM J9" "wms_srs" "EPSG:4269 EPSG:4326" "wms_include_items" "all" ##wfs metadata "wfs_title" "fire_points" "gml_featureid" "id" "gml_include_items" "all" "gml_geometries" "standard" "gml_standard_type" "point"

12 Format Example Layer Info (cont) END TYPE POINT STATUS ON DUMP TRUE TOLERANCE 3 TRANSPARENCY 90 TEMPLATE "test.php" PROJECTION "init=epsg:4326" END CLASS NAME "fire_points" SYMBOL graphics/flames.gif END

13 Giesken James J9 Control Screenshot Demo

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15 How did MySQL grade out? Pros Cons Incompletes

16 Unresolved Issues – Steps Forward Speed of Google Maps Grouping of layers Standards Assessment MySQL GIS function usage expansion

17 Thanks Would like to thank Steve Judy who was instrumental in the front end design and design of some of the subtables used for this project Also would like to thank Chris Kannan of NGA who I bounced a lot of these ideas off of and who put me in contact with people who had used MapServer before

18 Questions Any Questions after the conference can be directed to: Don Beesing

19 References jo


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