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sviewer is a very simple web map viewer working with the geOrchestra SDI
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README.md

sViewer - simple viewer for geOrchestra

This branch is a complete rewrite of sviewer based on OpenLayers3.

Quick start

  1. Copy etc/customConfig.DIST.js into etc/customConfig.js
  2. Edit etc/customConfig.js to suit your needs
  3. Upload the source tree to your web server

What is sViewer ?

sViewer (simple Viewer) is a very simple web map viewer based on the OpenLayers and jQuery mobile libraries. Sviewer offers :

  • basic touch-enabled map controls
  • place search (OpenLS french geoportal based)
  • queryable Web Map Service overlays
  • Web Map Context loader
  • permalinks, social links, QR code
  • geOrchestra viewer compatibility ('send to sviewer')
  • map edit with the geOrchestra viewer
  • easy to embed in a webpage through iframe or href
  • should work on small (phone), medium (tablet) and large (desktop) displays
  • i18n support : en (hardcoded), fr, es, de, ru. Feel free to contribute using fr as template.

sViewer was designed to work within the geOrchestra SDI, but it also may work with any OGC-enabled SDI. There's a user tutorial here : http://cms.geobretagne.fr/content/visualiseur-simple-g%C3%A9obretagne

sViewer design notes

  • ol3 + jQuery mobile
  • no server-side component except a required Ajax proxy (featured in geOrchestra and probably in other SDIs). Untar and it should work.
  • EPSG:3857 only : OpenStreetMap, MapQuest, Google...
  • simple startup config with KVP in the querystring
  • shall work on phone, tablet, desktop browsers

KVP parameters

The tag 'is persistent' indicates that the specified parameter is persistent in the permalink or QR code. KVP parameters can conflict (xyz recenter vs wmc recenter). First parameter in this document takes precedence.

x {integer} y {integer} z {integer}

is persistent Center the map on x,y (EPSG:3857 units) and set the z zoom factor example :

http://sdi.georchestra.org/sviewer/?x=-366959&y=2951352&z=5

title {string}

is persistent Map title. This can be changed using the "share" button. Use short titles suitable for small screens. Example :

    http://sdi.georchestra.org/sviewer/?wmc=9be95a6894a3dc6135c8cd760d83f6ef&title=geOrchestra%20SDI

lb {integer}

is persistent Displays the #lb background layer. ie lb=0 displays the first preset background layer example :

http://sdi.georchestra.org/sviewer/?lb=1

layers {string}

is persistent Comma-separated list of geOrchestra layer names with namespace extension. This is the fastest way to set up a map because the WMS url is hardcoded (hardConfig.geOrchestraURL). It assumes :

  • layers are delivered by the hardcoded geOrchestra (or geoserver) platform
  • layers are queryable with INFO_FORMAT=text/html
  • layers do have associated HTML templates

example :

http://sdi.georchestra.org/sviewer/?layers=geor:sdi

To specify alternative styles for a layer, add "*stylename" to the layer name. example :

http://sdi.georchestra.org/sviewer/?layers=geor:sdi*geor_sdi

To specify a vendor CQL_FILTER for a layer, add "**cql_filter" to the layer name if no alternative style is specified, otherwise use layerstylecql_filter examples :

http://sdi.georchestra.org/sviewer/?layers=geor:sdi*geor_sdi*title%3DPIGMA
http://sdi.georchestra.org/sviewer/?layers=geor:sdi**title%3DPIGMA

wmc {string}

is persistent Url of a Web Map Context. Only visible and queryables layers will be loaded. The WMC parser supports SLD custom styling generated by geOrchestra. Warning, there's no extent or projection check. -or- Id of a geOrchestra Web Map Context. Makes the url shorter and allows "send to sviewer" from the geOrchestra advanced viewer.

Example :

http://sdi.georchestra.org/sviewer/?wmc=http://geobretagne.fr/context/default/05.xml
http://sdi.georchestra.org/sviewer/?wmc=9be95a6894a3dc6135c8cd760d83f6ef

kml {string}

is persistent Url of a kml resource. On query, the popup displays object description or, if missing, the object attributes.

q {string}

is persistent Queries the map on startup. Convenient to enlight a specific feature on the map. The query is persistent when the user shares the map. Click on the marker to remove it and disable autoquery.

c {string}

is persistent

Chooses a particular SViewer configuration See "multiple configurations".

Example :

http://sdi.georchestra.org/sviewer/?c=myconf

qr {string}

Opens the permalink/QR code on startup. Convenient for the geOrchestra 'send to mobile' action, as one can immediately scan the permalink.

s {string}

Activate search features based on text attributes layer (only first layer for the moment).

multiple configurations

You may provide several configurations for one SViewer instance. Copy etc/customConfig.js into etc/customConfig_myconf.js and edit this file according to your needs. You can call this profile using &c=myconf&

The profile name MUST MATCH ^[A-Za-z0-9-_]$, ie "myconf" is valid, "myconf.myorg" isn't.

geOrchestra integration

  • sViewer displays title, asbtract, legend, metadata link, attribution, attributionURL, logoURL from the WMS capabilities
  • sViewer can POST the map layout to the geOrchestra advanced viewer for edit, analysis, print purposes.
  • sViewer can read WMC from the geOrchestra advanced viewer.

TODO

First item, highest priority

  • accessibility check
  • special treatment for opaque layers
  • customisable splashscreen
  • check the genericity of the openLS helper
  • GPS geocoding, tracking, events based on feature proximity
  • CQL filters support
  • mobile OS manifest

Before using this project, read the LICENSE.en terms.

(c) 2011-2014 geOrchestra http://www.georchestra.org/

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