Releases · clarity-h2020/map-component

Map Component

The Map Component is understood as a reusable, flexible and highly
configurable Building Block meant to be used throughout CSIS. It is
envisioned as an embeddable component that can be easily adapted to
different parts of the common CSIS UI. The core functionalities of this
component must be a clear and easy visualization of different maps and
layers. It is also a key feature of the map component to allow for a
degree of interactivity meant to enable users to better define
locations, elements at risk, hazards, scenario results, etc.

Requested functionality

Baseline requirements elicitation and the assessment of presently
available Test Cases have yielded the following functional requirements
for this Building Block:

Baseline functionality

Basic map functionality such as zoon in, zoom out, pan, click on a
point (and get info related to it if available), draw polygon/bbox,
etc.
Visualize different types of hazard maps in relation to climate
change projections for an area of interest
Advanced layer management: the user must be able to add individual
(hazards) maps as layers (e.g. from existing (local) WMS), and to
provide a set predefined climate change projection layers (e.g. from
C3S.)
Support for Map Layer Timeline, e.g. visualize temperature change
between 2020-2050 in an area of interest. This can be achieved using
the TIME attribute in WMS GetMap requests.)
Generate geo-referenced information to exchange with planning
services (data might be obtained as of SHP, NetCDF, geoTIF, etc.
export) with help of external services (GeoServer).
Show map layers from both internal and external WMS Services
(CLARITY cloud file storage / GeoServer / or public Open Data
inventories.)
Spatial data import: the user must be able to upload (hazards) maps
in a standardised format, add them to a private data repository and
the workspace, and show them as a layer.
Predefined layers: provide a set predefined climate change
projection layers (e.g. from C3S.)
Tabular visualisation of GML Feature's attributes obtained from an
OGC WFS.
Editing of GML Feature's attributes via OGC WFS-T.

Functionality requested by CSIS Test Cases

from US-CSIS-100: For the pre-feasibility study, where the user
selects some random location, the system should be able to extract
the information from the map at the selected location. So, the map
component must be able to account for these interactions too. This
information must also be available within the system (not offline,
by some expert), so it can be used for the automatic evaluation: pre
feasibility risk analysis and reporting. For the expert study, the
expert must be able to upload/download the maps to analyse them
offline, this will depend on the US/TC.
from TC-CSIS-0053: The map component is used to specify, view and
change the geospatial project location. It will also display some
standard background layers (topographic, aerial, etc.)

Functionality requested by DC Test Cases

from US-DC1-150: The results of CLARITY simulations and climate
services could be visualized as Georeferenced maps.
from US-DC1-110: Visualize heat wave, landslide and pluvial flood
hazard maps in relation to climate change projections for the area
of the Metropolitan City of Naples.
from TC DC1: Display results of impact scenario (no adaptation) on a
map (note that map visualization must always include a legend based
on the layers included).
from TC DC1: Map widget should allow the comparison among "non
adaptation" and "adaptation" scenarios (e.g. two maps juxtaposed
on the same screen), see also Scenario Transferability Component.
from TC DC1: The Map View must provide an user interface that will
allow the user to visualize the location of the current project
under assessment (e.g. city) and to specific the spatial extent
(area under assessment) that should be considered by a local model
(e.g. urban climate model) when producing a specific hazard map
(e.g. heat waves) for that particular area.
from TC DC1: Displays hazards maps resulting from local models (e.g.
urban climate models) run "offline" by experts.
from TC DC4: Displays the hazards using a map. It must allow the
user to configure how to represent them.
from TC DC4: The user selects a specific geographical area. The user
needs to modify the geographical location of a selected element at
risk.
from TC DC4: Needed to upload / store / compute / maps at a regional
or local scale to allow to evaluate the climate risks.
from TC DC4: The user defines the geographical area covered by the
study and loads the elements of the area
from TC RA: Position the elements at risk on a map, to show the
hazard map layers and to show a colour-coded map with the results of
the HxExV calculation (alternative to showing it in a table.).
from TC RA: Select and show an entire inventory of elements at risk
(e.g. buildings layer) on the map.

Technology support

The high interactivity and flexibility expected from this component
requires an approach based on responsive and highly adaptable
technologies. This approach can be achieved using client-side rendering
along with libraries and tools that have already proved their usability
and popularity, meaning that a big and active community is supporting
their development and use. To ensure this high interactivity approach of
this web application a good approach would be to use React, React
allows rich site interactions, fast website rendering after the initial
load, and a good selection of JavaScript libraries. It is also designed
to build encapsulated components that can be composed to make complex
UIs. In consequence, the Map Component is developed as independent
HTML5/AJAX RIA that is loosely embedded as HTML5 iframe in the
UI Integration Platform (Drupal 8, see 7.5) and relies as backend on
Data Repository (7.4) and various OGC Services, respectively.

In terms of an open-source solution for the map itself, a proposed
solution will be the use of Mapbox GL and Leaflet depending on
the necessities of each map or layer. Mapbox provides a number of tools
to build maps into a website or application. It is an open source
JavaScript library that can be used to display maps, add interactivity,
and customize the map experience. There are also a number of plugins for
extending the map's functionality with drawing tools and interfaces to
Mapbox web services APIs like the Mapbox Geocoding API or Mapbox
Directions API.

https://www.mapbox.com/help/define-mapbox-gl/

While Leaflet is meant to be as lightweight as possible, and focuses on
a core set of features, an easy way to extend its functionality is to
use third-party plugins developed by an active community.

http://leafletjs.com/

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Map Component

Requested functionality

Technology support

Releases: clarity-h2020/map-component

Map Component v2.7.2

Map Component v2.7.1

Map Component v2.7.0

Map Component v2.6.0

v2.5.0

Map Component v2.5.5

Map Component

Requested functionality

Technology support

v2.4.4

v2.4.1

v2.1.0

2.0.0