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Although it was intended to capture all new buildings irrespective of whether or not they were identified through the planimetric update process, it is likely that building rooftop changes not identified through the planimetric update process may not have been captured. This dataset contains full rooftops, including protrusions such as gabled windows, chimneys, elevator utility rooms, etc.. There were also additional datasets delivered which broke out those roof elements into separate files, as well as deliveries which included complete 3D buildings with rooftops and facades. In many instances, row-houses and other contiguous building rooftops could not be broken apart using the process methodology and appear as a single structure. In some cases, entire blocks of row houses are represented as a single feature, though visually they can be distinguished easily. Additionally, the process captured small features, such as canopy umbrellas and other structures as building rooftops and these features may exist at various locations in the dataset.Many data gaps in the earlier dataset (largely due to missing or reduced-resolution source imagery) are corrected in this product. Based on comparison to DC\u2019s available planimetric datasets, there are still instances where particular structures are omitted or not updated in the current product, but we believe that upwards of 99% of the District\u2019s buildings are reflected in this dataset.All DC GIS data is stored and exported in Maryland State Plane coordinates NAD 83 meters.", "geometryType": "esriGeometryMultiPatch", "sourceSpatialReference": { "wkid": 26985, "latestWkid": 26985, "xyTolerance": 0.002, "zTolerance": 0.001, "mTolerance": 0.001, "falseX": -36747100, "falseY": -29091500, "xyUnits": 1000, "falseZ": -100000, "zUnits": 10000, "falseM": -100000, "mUnits": 4.50360413097463E9 }, "copyrightText": "District of Columbia Office of Planning\nCyberCity 3D", "parentLayer": null, "subLayers": [], "minScale": 6000, "maxScale": 0, "referenceScale": 0.0, "drawingInfo": { "renderer": { "type": "simple", "symbol": { "type": "esriSFS", "style": "esriSFSSolid", "color": [ 242, 99, 89, 255 ], "outline": { "type": 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