NDVI v1.0 - 2023
Orthoimage representing the normalized difference vegetation index (NDVI), with a resolution of 1 m. This index makes it possible to estimate the quantity, quality and development of vegetation, based on the normalized difference between the radiation reflected in the infrared band of the electromagnetic spectrum with respect to the red band of the visible spectrum. This set of information is distributed in 2 by-products: Real NDVI orthoimage, where each pixel takes the real value of the index in question (between -1 and 1), in such a way that it facilitates exhaustive studies but requires advanced software; 8-bit NDVI orthoimage, where each pixel takes the value of the index in question but discretized to an integer range between 0 and 200, so that it facilitates an overview.
Simple
- Date (Creation)
- 2024-02-08
- Identifier
- IDEC / ndvi-v1r0-2023
- Purpose
- The objectives of this geoinformation are: To determine different aspects related to the state of the vegetation: growth of the plants, vegetal covers, volume of biomass, or determination of the state and location of the urban green; Facilitate the knowledge and interpretation of the evolution of the territory from various areas, especially the environmental and biological, as well as enable the performance of temporary analyzes of changes in vegetation in a context of climate analysis; Carry out operations, consultations and analyzes related to vegetation and facilitate their representation on a map.
- 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
- 1 m
- Metadata language
- Catalan; Valencian
- Character set
- UTF8
- Topic category
-
- Imagery base maps earth cover
- Description
- Spatial extent covers all Catalonia. Temporal extent refers to the dates of the source data.
N
S
E
W
- Begin date
- 2023-04-17
- End date
- 2023-10-08
- Unique resource identifier
- ETRS89 UTM zone 31 North (EPSG:25831)
- Distribution format
-
-
GeoPackage
()
-
GeoTIFF
(
1.1
)
-
GeoPackage
()
- OnLine resource
- Data download
- OnLine resource
- WMS view service ( OGC Web Map Service )
- OnLine resource
- WMS view service (Description)
- OnLine resource
- Open ICGC QGIS plugin
- OnLine resource
- Technical specifications
- Hierarchy level
- Dataset
Domain consistency
- Name of measure
- Conformity with the technical specification approved by the Cartographic Coordination Commission of Catalonia
Conformance result
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
- NDVI orthoimages are generated from images obtained by a photogrammetric aerial camera, capable of obtaining information not only from the visible range of the electromagnetic spectrum but also from the near infrared, and with a pixel size spanning about 25 cm above the ground. By combining the information captured in the red and near-infrared band, following the formula below, NDVI is obtained, which is the value assigned to each pixel: NDVI = (near-infrared - red) / (near infrared + red). Then, the images are geometrically rectified, based on a 5 m resolution terrain elevation model, and a mosaic is made to obtain a continuous orthoimage of the whole of Catalonia that ends up covering 1 m of the territory for each pixel.
- Description
- Aerial images
- File identifier
- ndvi-v1r0-2023 XML
- Metadata language
- Catalan; Valencian
- Character set
- UTF8
- Hierarchy level
- Dataset
- Date stamp
- 2024-02-28
- 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