Date (Creation)

2025-12-15

Identifier

IDEC / model-elevacions-terreny-lidar-catalunya-50cm-2021-2023

Purpose

The main objectives of this geoinformation are: Carrying out urban and territorial planning studies, for the design and evaluation of the environmental and visual impact of infrastructures, calculating slopes, studying solar orientation, improving landscape design, etc.; Assessing natural risks such as floods, torrential rains, landslides and rockfalls; and providing information that contributes to promoting actions and projects to improve adaptive capacity in the face of the impacts of climate change; Studying erosion processes and identifying areas vulnerable to soil erosion, allowing the implementation of land conservation and restoration strategies; Optimizing the management of resources, such as irrigation water, in the field of precision agriculture; Providing a reference base for the development of any activity that has a territorial impact and that must take into account the relief. They are especially relevant in the field of technical activities, management, planning or administration of the territory; Perform spatial analysis operations with other sets of geographic information, especially in 3D.

GEMET - INSPIRE themes, version 1.0

• Elevation

IDEC - llocs

• Catalonia
• Spain
• Europe

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

Grid

Distance

0.5  metre

Metadata language

Catalan; Valencian

Character set

UTF8

Topic category

• Elevation

Description

Spatial extent covers all Catalonia. Temporal extent refers to the date of the data sources. Vertical extent is approximate.

Begin date

2021-04-24

End date

2023-11-20

Unique resource identifier

ETRS89 UTM zone 31 North (EPSG:25831)

Reference system identifier

Orthometric altitudes referred to the geoid EGM08D595

Distribution format

• COG ()

OnLine resource

Data download

Access point

OnLine resource

Product description

Access point

OnLine resource

Technical specifications

Access point

Hierarchy level

Dataset

Statement

Lidar is an airborne laser altimeter sensor that allows the generation of dense and highly accurate terrain models. The system provides a continuous point cloud over the territory, which is adjusted with control areas, and each of the points is subsequently classified according to the type of element of the territory it represents (terrain, vegetation, buildings, water, etc.). This classification, as well as the degree of manual correction that can be performed, may vary depending on the publication. With this, from the points of the terrain class (ground) and the slope breaklines that may have been added, a model of terrain triangles is generated (through triangulation processes) from which the regular grid model is obtained by interpolation. As for the aforementioned breaklines, they are usually obtained by joining points of the cloud, through monoscopic restitution, in areas of abrupt slope change that have not been well defined. The fulfilment of the parameters of quality established for this database in the technical specifications is verified: positional accuracy, logical consistency.

Description

Altimetric information, corresponding to the terrain, from the LiDAR sensor.

File identifier

model-elevacions-terreny-lidar-catalunya-50cm-2021-2023 XML

Metadata language

Catalan; Valencian

Character set

UTF8

Hierarchy level

Dataset

Date stamp

2025-12-22

Metadata standard name

IDEC profile of metadata of spatial datasets

Metadata standard version

Version 5.0