Geopatial Visualization Documentation¶
- Geopatial Visualization Documentation
The Geoanalytics Platform is a Web GIS solution that facilitates analysts and scientists to visualize and manage geospatial information. Furthermore, it enables them to run complex analysis over an area of interest and extract valuable information based on various factors.
A brief overview of the facilities that the platform provides, as well as a description of how these services operate, will be presented in the following chapters.
Project Management & Decision Support System¶
The Geoanalytics Platform offers the ability to the users to create and maintain projects with various authorization options. A project is defined as a set of geospatial datasets (layers) and a set of algorithms that can be combined in order to produce new layers containing the results of an analysis. Shared projects can be defined in which multiple users can collaborate and contribute their work. Furthermore, users can create their own private projects in order to perform their work undistracted and there is also the ability to define public projects that any user can access. The following figure presents the main page of the Geoanalytics Platform in which users can see the projects that they are associated with.
During the project's creation phase, users select on the map the main area that they are interested to run a geospatial analysis.
Furthermore, they specify the layers that they want to take part in the project.
The user should also specify which users or group of users can have access to the project.
And finally, a name and a description of the project should be filled in order this project to be easily discoverable.
As soon as a project is created or selected, the user is redirected to the decision support page in which the layers that participate in the project can be visualized.
Additionally, the user can execute an analysis function by selecting one of the available algorithms, specifying an area and setting certain parameters.
By clicking on a specific point on the map, a pop up is opening presenting the attribute values contained in the shapes of this point.
The administrator facilities include tools that enable VRE managers to import new datasets and algorithms or configure the existing ones. As presented in the following screenshot, the layers that are available in a VRE are listed and several actions can be performed such as edit the details of a layer, render it, permanently delete it, edit its attributes or download it in the form of shapefile/geotiff.
The user can modify the name, the description or the style of the layer.
Furthermore, the user can change which attributes of a layer are visible and also change the label or the order that they will be presented.
The user is also able to publish the layer to GeoNetwork/Catalogue and make its metadata available to the public.
The tags of each layer are used in order to enrich search facilities and they can be edited by the admin tool.
In addition, VRE managers are able to upload a new layer style and assign it to a layer.
As displayed in the following screenshot, in order to define a new style, users may upload an xml file in sld compatible format.
The administration tools also offer the opportunity to import data of various formats. Figure 34 displays the TSV importer in which users can select a TSV file, the geocode system that it references and the style of the generated layer and import the data as a geospatial layer. TSV importer is helpful particularly for importing data from statistical sources.
The WFS importer is reading from a WFS endpoint the layers that exist in that source and lists them to the user. The administrator is then capable to select which layers he wants to import and store them in the platform.
Shapefile is a widely used format that is supported as input by the Geoanalytics Platform. The VRE manager can upload a shapefile and make it available in his VRE.
The Geoanalytics Platform supports raster layers in GeoTIFF format. Accordingly, to the shapefile import the user can upload a GeoTIFF file, select a style for this layer and upload it to the platform.
The import of NetCDF files that conform to the COARDS conventions is supported, too. The admin can import NetCDF files in the same manner as described in the GeoTIFF import.
Geodata in GeoJSON format can also be imported in the platform.
The platform provides two options for the admin to upload the geodata.
He can upload a single file from his local computer.
He can also import a file from his workspace
Through the Users’ management tab, the administrator can inspect which users are active in the platform.