wiki:ReplacingIntermap

Version 13 (modified by fxp, 15 years ago) ( diff )

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Use OpenLayers for web mapping interface (replace Intermap with OL)

Date 2008/06/20
Contact(s) etj, francois
Last edited Timestamp
Status draft
Assigned to release to be determined
Resources ?

Overview

Replace IM with a more responsive map client.

Current known initiatives :

Some screenshots

Proposal Type

  • Type: GUI Change, Module Change
  • App: !Intermap
  • Module:

Voting History

  • No votation requested yet.

Motivations

The current implementation of the map client needs an image transfer from the Intermap server every time something in the map changes.
OpenLayers has a quite different architecture, where many efforts has been spent in order to minimize heavy data transfers from map servers to the client. Also many map operations are ready out of the box. Removing the IM webapp in order to simplify the installation is also a nice target.

The main objectives are :

  • add support for some Intermap missing functionnalities:
    • allow simple vector feature support (bbox highlight, define bbox or bounding polygon in the editor)
    • allow non WGS84 projection support
  • improve :
    • map viewing (tiling, layer tree)
    • pdf printing

GUI will be mainly written using javascript. It will be easier to update the layout as it will use div and css (instead of existing deeply nested table layout). A jeeves service named "home" is using XSL to read localized string for the UI. Then all the layout will be HTML and JS.

Proposal

Catalogue search form

Search form is composed of a simple and advanced mode. Search criteria available by default are:

  • simple form
    • full text
    • region or bounding box
    • title
    • abstract
  • options
    • sortBy
    • number of restuls per page
    • output
Function Available in 2.2 geocat.ch NGR Available Comments

Catalogue search results

Function Available in 2.2 geocat.ch NGR Available Comments
Metadata view X Popup (modal?) in default view mode ? Button to access to advanced view ?

Map Features

One "mini-map" is used to define search criteria and higlight bounding box of search results. One "big-map" is used to make your map and display geographic data using OGC Services.

Common map features ===

Function Available in 2.2 geocat.ch NGR Available Comments
Zoom in/out X X default OL navigation or in map toolbar
Zoom slider X default OL navigation
Panning X X default OL navigation or in map toolbar
Zoom to full extent X X double click the metadata record to go to the metadata extent

Mini-map features ===

Function Available in 2.2 geocat.ch NGR Available Comments
Metadata Bbox higlighter X

Big-map features ===

Function Available in 2.2 geocat.ch NGR Available Comments
Layer tree X X GeoExt layer tree (add, remove, view, reorder, transparency)
Pdf printing X X MapFish print module, TODO send by email
WMC X X OL WMC support, TODO email context

Intermap feature not available in the proposal ===

Function Available Comments
Markers & annotation Not planned yet

To be discussed

Required librairies :

  • OpenLayers (2.8?)
  • GeoExt (0.5?)
  • MapFish (?)

The GeoEditorViewer proposal add the OpenLayers 2.8 and GeoExt 0.5 libs.

Related works :

Backwards Compatibility Issues

Risks

Participants

  • Francois (geocat.ch)
  • Patrick (geocat.ch)
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