Catàleg IDEC
Coastline lidar v1.0 - March-April 2024
Cloud of lidar points (3D) of the emerged coastal strip, with an average density of 15 points/m2.
Simple
- Date (Creation)
- 2025-12-10
- Identifier
- IDEC / lidar-litoral-v1r0-202403-202404
- Purpose
- The main objectives of this geoinformation are: To carefully monitor the evolution of the coastline and its changing conditions; To enable the evaluation of the changes that occur in the coastal environment over time or due to the effects of storms, and thus be able to determine the preservation policies of this environment in constant evolution due to human action and the effects of climate change; To obtain models of terrain elevations and surfaces, as well as realistic 3D visualizations of the territory; To facilitate the calculation of the risk of flooding and other risks where knowledge of the relief is essential; To provide a reference base for the development of any activity that has a territorial impact and that must take the relief into account. They are especially relevant in the field of technical activities, management, planning or administration of the territory; To carry out spatial analysis operations with other sets of geographic information, especially in 3D.
- IDEC - llocs
-
- Catalonia
- Spain
- Europe
- IDEC - temes
-
- Hub litoral
- SIDL
- Access constraints
- Other restrictions
- Other constraints
- No limitations
- Use constraints
- Other restrictions
- Other constraints
- Creative Commons Attribution 4.0 International (CC BY 4.0)
- Spatial representation type
- Vector
- Metadata language
- Catalan; Valencian
- Character set
- UTF8
- Topic category
-
- Elevation
- Description
- Spatial extent covers the coastal strip of Catalonia, complete or partial. Temporal extent refers to the date of the data. Vertical extent is approximate and does not include points classified as noise.
N
S
E
W
))
- Begin date
- 2024-03-14
- End date
- 2024-04-01
Vertical extent
- Minimum value
- -10
- Maximum value
- 3200
Vertical CS
No information provided.
Vertical datum
No information provided.
- Unique resource identifier
- ETRS89 UTM zone 31 North (EPSG:25831)
- Reference system identifier
- Orthometric altitudes referred to the geoid EGM08D595
- Distribution format
-
-
LAS
(
1.4
)
- File decompression technique
- The LAS format is distributed compressed (.laz): http://inspire.ec.europa.eu/media-types/application/x-laz
-
LAS
(
1.4
)
- OnLine resource
-
Flight dates, density and other data - on line query
On line tool that provides the variable information specific for each of the sheets in which the data set is cut for distribution purposes: unit code, file name, data model version, range of dates of the flights from which the data has been obtained (temporal extent), points density and classes that contains.
- OnLine resource
-
Flight dates, density and other data - SHP file download
SHP file that provides the variable information specific for each of the sheets in which the data set is cut for distribution purposes: unit code, file name, data model version, range of dates of the flights from which the data has been obtained (temporal extent), points density and classes that contains.
- OnLine resource
- Download clouds of points (LAZ format)
- OnLine resource
- Technical specifications
- Hierarchy level
- Dataset
Domain consistency
- Name of measure
- Compliance with INSPIRE requirements (data)
- Evaluation method description
- The data of this dataset do not aim to achieve compliance with INSPIRE regulations. For this reason, its conformity is not evaluated and it is declared not conformant compliant by default.
Conformance result
Domain consistency
- Name of measure
- Compliance with INSPIRE requirements (metadata)
- Evaluation method description
- The compliance of the metadata is evaluated using the "INSPIRE Reference Validator" web tool. The metadata is considered correct when the only errors reported are related with the main language of the metadata file. These errors are due to the fact that Catalan is not included in the list of official languages of the European Union.
Conformance result
- Statement
- The cloud of points is captured with a lidar sensor, calibrated and adjusted with topographic control areas, in order to obtain an altimetric accuracy with a mean square error of about 6 cm in flat areas with little vegetation. Each lidar point is associated with the date and time of capture (absolute GPS time). The data are distributed in 1x1 km blocks, although within the same block there may be points with different flight dates. Each block is calibrated and adjusted with the control areas. An initial automatic classification of the adjusted points is carried out with the aim of separating the noise and the escaped points —both high and low— that do not represent real elements of the terrain. A basic classification is then applied to distinguish the points corresponding to the terrain and buildings from the rest. To facilitate this process, the terrain is previously segmented according to the morphology of the terrain: flat, normal slope or steep slope, and according to the presence of large buildings. Subsequently, a specific classification of the points located on bridge platforms is carried out, using vector information on the location of these elements. The process continues with a final classification that identifies and assigns the points corresponding to vegetation and water to their respective classes, also generating auxiliary classes. Finally, a quality control of the classified point cloud is carried out, focusing on the evaluation of the automatic classification of the terrain, buildings and water classes. In the case of the water class, the errors detected are corrected manually.
- Description
- Lidar sensor.
- File identifier
- lidar-litoral-v1r0-202403-202404 XML
- Metadata language
- Catalan; Valencian
- Character set
- UTF8
- Hierarchy level
- Dataset
- Date stamp
- 2025-12-16
- Metadata standard name
- IDEC profile of metadata of spatial datasets
- Metadata standard version
- Version 5.0
Overviews
Spatial extent
N
S
E
W
Provided by
Associated resources
Not available