إنّ نموذج الارتفاع الرقمي AHN هو نموذج ارتفاع رقمي يبلغ 0.5 متر ويغطي هولندا. تم إنشاؤها من بيانات LIDAR التي تم جمعها في الربيع بين عامَي 2007 و2012.
وتحتوي على عيّنات على مستوى الأرض مع إزالة جميع العناصر الأخرى فوق الأرض (مثل المباني والجسور والأشجار وما إلى ذلك). هذه النسخة مستوفاة، ويتم ملء المساحات التي تمت إزالة الكائنات منها بقيم مستوفاة. تم تحويل مجموعة النقاط إلى شبكة مربّعة تبلغ مساحتها 0.5 متر باستخدام طريقة الترجيح التربيعي العكسي للمسافة.
النطاقات
حجم البكسل 0.5 متر
النطاقات
الاسم
الوحدات
حجم البكسل
الوصف
elevation
م
أمتار
الارتفاع
بنود الاستخدام
بنود الاستخدام
تتوفّر مجموعات بيانات AHN كبيانات مفتوحة.
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البيانات المفتوحة. تتوفّر عمليات التنزيل بموجب أحكام رخصة CC-0.
إنّ نموذج الارتفاع الرقمي AHN هو نموذج ارتفاع رقمي يبلغ 0.5 متر ويغطي هولندا. تم إنشاؤها من بيانات LIDAR التي تم جمعها في الربيع بين عامَي 2007 و2012. وهي تحتوي على عيّنات على مستوى الأرض مع إزالة جميع العناصر الأخرى فوق الأرض (مثل المباني والجسور والأشجار وما إلى ذلك). هذا الإصدار مستكمَل، والمناطق التي …
[null,null,[],[[["\u003cp\u003eThe AHN DEM is a 0.5m resolution Digital Elevation Model (DEM) covering the Netherlands, derived from LIDAR data acquired between 2007 and 2012.\u003c/p\u003e\n"],["\u003cp\u003eIt provides ground level elevation data, with above-ground features like buildings and trees removed and interpolated.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset is freely available as Open Data under the CC-0 license and can be accessed through Google Earth Engine.\u003c/p\u003e\n"],["\u003cp\u003eThis interpolated version utilizes a squared inverse distance weighting method for converting point cloud data to a 0.5m grid.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset is hosted by AHN and accessible via the provided links for further exploration and use.\u003c/p\u003e\n"]]],["The AHN dataset provides a 0.5-meter Digital Elevation Model (DEM) of the Netherlands, derived from LIDAR data collected between 2007 and 2012. It represents ground level with above-ground objects removed and areas filled with interpolated values, using a squared inverse distance weighting method. The dataset's elevation band is available in meters, and is available under a CC-0 license. The data can be accessed through Google Earth Engine with a code snippet provided.\n"],null,["# AHN Netherlands 0.5m DEM, Interpolated\n\nDataset Availability\n: 2012-01-01T00:00:00Z--2012-01-01T00:00:00Z\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 AHN DEM is a 0.5m DEM covering the Netherlands. It was generated from\nLIDAR data taken in the spring between 2007 and 2012.\n\nIt contains ground level samples with all other items above ground (such as\nbuildings, bridges, trees etc.) removed. This version is interpolated; the\nareas where objects have been removed are filled with interpolated values. The\npoint cloud was converted to a 0.5m grid using a squared inverse distance\nweighting method.\n| **Note:** This dataset does not include a small number of tiles listed in the manifest that are only available at a lower resolution.\n\n### Bands\n\n\n**Pixel Size**\n\n0.5 meters\n\n**Bands**\n\n| Name | Units | Pixel Size | Description |\n|-------------|-------|------------|-------------|\n| `elevation` | m | meters | Elevation |\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.Image('AHN/AHN2_05M_INT');\nvar elevation = dataset.select('elevation');\nvar elevationVis = {\n min: -5.0,\n max: 30.0,\n};\nMap.setCenter(5.76583, 51.855276, 16);\nMap.addLayer(elevation, elevationVis, 'Elevation');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/AHN/AHN_AHN2_05M_INT) \n[AHN Netherlands 0.5m DEM, Interpolated](/earth-engine/datasets/catalog/AHN_AHN2_05M_INT) \nThe AHN DEM is a 0.5m DEM covering the Netherlands. It was generated from LIDAR data taken in the spring between 2007 and 2012. It contains ground level samples with all other items above ground (such as buildings, bridges, trees etc.) removed. This version is interpolated; the areas where objects ... \nAHN/AHN2_05M_INT, ahn,dem,elevation,elevation-topography,geophysical,lidar,netherlands \n2012-01-01T00:00:00Z/2012-01-01T00:00:00Z \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_AHN2_05M_INT)"]]
