Short intro to the Heron Mapping Client at the OpenGeoGroep Viewer Shootout event onDec 14, 2012. Heron is about Web Mapping, leveraging the power of great frameworks like GeoExt, ExtJS and OpenLayers.

1. HERON
MAPPING CLIENT
Web Mapping Made Easy
Just van den Broecke - OpenGeoGroep - Viewer Shootout - Dec 14, 2012
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5. WEB MAPPING CLIENTS
OpenLayers
MapQuery
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6. 2011
http://geotux.tuxfamily.org/index.php?option=com_myblog&task=view&id=257&Itemid=59&lang=en
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7. 2012
http://geotux.tuxfamily.org/index.php/en/geo-blogs/item/291-comparacion-clientes-web-v6
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8. do we need yet another
web mapping client ?
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9. HERON - MOTIVATION
Make web mapping (really) easy
Leverage the power of existing frameworks
Reusability for recurring apps like Viewers
Viewer Templates: e.g. service previews
Not an Island: provide for a complete web app
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10. HERON - CONCEPTS
Declarative Programming
Component Based
Complete Webapp
Build on GeoExt (+ExtJS+OpenLayers)
the configuration is the app
the app is the configuration
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11. HELLO HERON
Heron.layout = {
xtype: 'window',
title: "Hello Heron",
height: 280, width: 450,
items: [
{
xtype: "gx_mappanel",
layers: [new OpenLayers.Layer.WMS("World Map",
"http://tilecache.osgeo.org/wms-c/Basic.py?"
{layers: 'basic', format: 'image/png' })],
zoom: 1
}
]
};
http://lib.heron-mc.org/heron/0.61/examples/minimal
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12. HELLO HERON
http://lib.heron-mc.org/heron/latest/examples/minimal
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13. CASES
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17. http://apps.heron-mc.org/previewapp
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20. ARCHITECTURE
Heron Apps
Heron
GeoExt
Open
ExtJS
Layers
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21. HERON HIGHLIGHTS
Configuration is the Application and v.v.
Based on major frameworks:
OpenLayers, GeoExt, ExtJS (GXP planned)
Advanced widgets and features:
LayerTrees, Printing, Vector/GML/INSPIRE, Editing,
Grid Display, Export Excel etc.
Client-only: no server included or needed
except standard OGC-WMS/WFS/., Printing, Proxy
Complete webapp, not just a Map/Viewer
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22. HERON ADVANTAGES
Configuration-Based
no to minimal custom coding
less code == less maintenance
customers (PDOK, RVOB) maintain their own apps
fixes/new Heron features benefit all apps
Development Speed
Standard frameworks
OpenLayers, GeoExt, ExtJS (GXP planned)
No custom servers needed
Complete webapp, not just a Map/Viewer
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23. LACKING IN HERON
Mobile
Learning curve
configuration
GeoExt/ExtJS/OpenLayers
Need more documentation
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24. WHEN TO USE HERON
Functional “GIS Desktop-like Apps”
toolbars/buttons/forms!
Preview-like apps/automatic configs
PDOK, deegree
(Vector-)Data-intensive apps
GML/WFS/INSPIRE
Whole website needed
mini-CMS, see e.g. kademo.nl
Customers that are “semi-programmers”
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25. DEVELOPMENT
Sponsors: Dutch Kadaster, RVOB
Initially developed by Just Objects and Geodan (ESDIN)
Main contributors from OpenGeoGroep.nl
Milo van der Linden, Just van den Broecke
Google Code project (GPLv3)
http://code.google.com/p/geoext-viewer - project
http://groups.google.com/group/geoext-viewer-devel -
mailing list
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28. HERON -LINKS
http://heron-mc.org
http://lib.heron-mc.org - hosted libs
http://apps.heron-mc.org/previewapp - demo
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