Actueel Hoogtebestand Nederland (AHN) to zbiór danych zawierający szczegółowe i precyzyjne dane o wysokości dla całej Holandii. Dane o wysokości zostały zebrane z helikopterów i samolotów za pomocą technologii laserowej z dokładnością pionową wynoszącą 5 cm.
Zbiór danych AHN4 zawiera zmienne AHN 0,5 m DSM i DTM dla Holandii.
Dane obejmują okres od 2020 r. do 2022 r.
Cyfrowy model terenu (DTM) przedstawia wysokość gruntu, a cyfrowy model powierzchni (DSM) – wysokość najwyższych powierzchni w danym punkcie.
Pasma
Rozmiar piksela 0,5 metra
Pasma
Nazwa
Jednostki
Rozmiar piksela
Opis
dtm
m
metry
Wysokość nad poziomem morza
dsm
m
metry
Wysokość najwyższych powierzchni w danym punkcie
Warunki korzystania z usługi
Warunki korzystania z usługi
Zbiory danych AHN są dostępne jako otwarte dane.
Oznacza to, że każdy może korzystać z tych danych bezpłatnie i bez ograniczeń. Więcej informacji znajdziesz na stronie Otwarte dane. Pobrane pliki są dostępne na warunkach licencji CC-0.
Actueel Hoogtebestand Nederland (AHN) to zbiór danych zawierający szczegółowe i precyzyjne dane o wysokości dla całej Holandii. Informacje o wysokości zostały zebrane z helikopterów i samolotów za pomocą technologii laserowej z dokładnością pionową do 5 cm. Zbiór danych AHN4 zawiera zmienne AHN 0,5 m DSM i DTM dla Holandii. Dane…
[null,null,[],[[["\u003cp\u003eThe AHN4 dataset provides detailed elevation data for the Netherlands, collected via laser technology from helicopters and aircraft, with a vertical accuracy of 5 cm.\u003c/p\u003e\n"],["\u003cp\u003eAvailable from 2020 to 2022, the AHN4 dataset includes both Digital Terrain Model (DTM) and Digital Surface Model (DSM) variables at a 0.5-meter pixel size.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset is freely available as Open Data under a CC-0 license, allowing anyone to use it without restrictions, and can be accessed through Google Earth Engine.\u003c/p\u003e\n"],["\u003cp\u003eThe AHN4 dataset includes dtm and dsm bands which represent the elevation of the ground and the tallest surfaces at a given point respectively.\u003c/p\u003e\n"],["\u003cp\u003eYou can easily access and visualize this dataset via a Google Earth Engine snippet.\u003c/p\u003e\n"]]],["The Actueel Hoogtebestand Nederland (AHN) AHN4 dataset provides detailed elevation data for the Netherlands from 2020 to 2022, collected via laser technology from aircraft. It includes Digital Surface Model (DSM) and Digital Terrain Model (DTM) variables at a 0.5-meter pixel size, representing the elevation of the tallest surfaces and the ground, respectively. The data is open and freely available under the CC-0 license for anyone. It can be accessed through Google Earth Engine using the `ee.ImageCollection(\"AHN/AHN4\")` snippet.\n"],null,["# AHN4: Netherlands AHN 0.5m\n\nDataset Availability\n: 2020-01-01T00:00:00Z--2022-01-01T00:00:00Z\n\nDataset Provider\n:\n\n\n [AHN](https://www.ahn.nl)\n\nTags\n:\n[ahn](/earth-engine/datasets/tags/ahn) [dem](/earth-engine/datasets/tags/dem) [elevation](/earth-engine/datasets/tags/elevation) [elevation-topography](/earth-engine/datasets/tags/elevation-topography) [geophysical](/earth-engine/datasets/tags/geophysical) [lidar](/earth-engine/datasets/tags/lidar) [netherlands](/earth-engine/datasets/tags/netherlands) \n\n#### Description\n\nThe Actueel Hoogtebestand Nederland (AHN) is a dataset with detailed and\nprecise elevation data for the whole of the Netherlands. Elevation\ninformation was collected from helicopters and aircraft using laser\ntechnology with vertical accuracy of 5 cm.\n\nAHN4 Dataset contains the Netherlands AHN 0.5m DSM and DTM variables.\nThe data cover the period between 2020 and 2022.\n\nThe Digital Terrain Model (DTM) product represents the elevation of the\nground, while the Digital Surface Model (DSM) product represents the\nelevation of the tallest surfaces at that point.\n\n### Bands\n\n\n**Pixel Size**\n\n0.5 meters\n\n**Bands**\n\n| Name | Units | Pixel Size | Description |\n|-------|-------|------------|-------------------------------------------------|\n| `dtm` | m | meters | Elevation of the ground |\n| `dsm` | m | meters | Elevation of the tallest surfaces at that point |\n\n### Terms of Use\n\n**Terms of Use**\n\nThe datasets of the AHN are available as Open Data.\nThis means that the data can be used by anyone for free and without\nrestrictions. For more information visit the\n[Open Data](https://www.ahn.nl/open-data/) page. Downloads are available\nunder the terms of the\n[CC-0 license](https://data.overheid.nl/licenties-voor-hergebruik).\n\n### Explore with Earth Engine\n\n| **Important:** Earth Engine is a platform for petabyte-scale scientific analysis and visualization of geospatial datasets, both for public benefit and for business and government users. Earth Engine is free to use for research, education, and nonprofit use. To get started, please [register for Earth Engine access.](https://console.cloud.google.com/earth-engine)\n\n### Code Editor (JavaScript)\n\n```javascript\nvar dataset = ee.ImageCollection('AHN/AHN4');\nvar elevation = dataset.select('dsm');\nvar elevationVis = {\n min: -5.0,\n max: 30.0,\n};\nMap.setCenter(5.76583, 51.855276, 16);\nMap.addLayer(elevation, elevationVis, 'AHN4 dsm');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/AHN/AHN_AHN4) \n[AHN4: Netherlands AHN 0.5m](/earth-engine/datasets/catalog/AHN_AHN4) \nThe Actueel Hoogtebestand Nederland (AHN) is a dataset with detailed and precise elevation data for the whole of the Netherlands. Elevation information was collected from helicopters and aircraft using laser technology with vertical accuracy of 5 cm. AHN4 Dataset contains the Netherlands AHN 0.5m DSM and DTM variables. The data ... \nAHN/AHN4, ahn,dem,elevation,elevation-topography,geophysical,lidar,netherlands \n2020-01-01T00:00:00Z/2022-01-01T00:00:00Z \n50.74 3.35 53.55 7.24 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [](https://doi.org/https://www.ahn.nl)\n- [](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/AHN_AHN4)"]]
