Kentucky Spot Elevations (Phase 2 highest/lowest by 5k grid)

Statewide spot elevations derived from KyFromAbove Phase 2 LiDAR. The spot elevations show the highest and lowest elevation in each 5,000-ft tile grid, which is the tiling scheme used to generate the base elevation layers. The 5k grid resolution balances computational efficiency with sufficient detail to capture meaningful topographic variation and should be useful for terrain analysis. The layer contains 91,779 point features representing elevation extremes in all 5k grid cells. The dataset identifies both the highest and lowest elevation points within each grid cell. The layer includes 45,903 unique grid cells, with each cell containing two points: HIGHEST (45,903 points) – the maximum elevation location within the cell LOWEST (45,878 points) – the minimum elevation location within the cell This layer captures the full elevation range from the western Purchase region to the rugged Appalachian highlands. Elevations span from -84.84 feet (a mine site in western Kentucky) to 4,139.4 feet (Black Mountain in Harlan County). Note: The slight difference in counts may arise from a small number of cells with no elevation difference, and the lowest-elevation cells were removed during postprocessing. Each feature includes: Grid identifier (e.g., "N011E285") using a standardized naming convention X and Y coordinates in Kentucky State Plane (FIPS 1600) Elevation in feet, derived from high-resolution DEM Type of point, highest or lowest Duplicate flag (all set to 0, indicating no duplicate issues)本数据集为基于KyFromAbove二期激光雷达（LiDAR）数据生成的全州点位高程数据集。该点位高程数据展示了每个5000英尺格网瓦片内的最高与最低高程值，此格网划分方案为基础高程图层的生成所采用的标准分幅规则。该5000英尺格网分辨率在计算效率与地形细节捕捉精度之间取得了平衡，能够有效保留具有意义的地形起伏特征，可广泛应用于地形分析场景。本图层共包含91779个点要素，对应所有5000英尺格网内的高程极值点，可识别每个格网单元内的最高与最低高程点位。本图层共包含45903个唯一格网单元，每个单元对应两个点要素：最高点点位（共45903个）——格网内高程最大值的位置；最低点点位（共45878个）——格网内高程最小值的位置。本图层涵盖了从西部帕奇斯地区至崎岖的阿巴拉契亚高地的完整高程范围，高程值域为-84.84英尺（肯塔基州西部一处矿区）至4139.4英尺（哈伦县的黑山）。注：点位数量存在细微差异，原因为少量格网单元内无高程差，且部分最低高程格网在后期处理中被移除。每个点要素包含以下信息：1. 格网标识符（示例："N011E285"），采用标准化命名规则；2. 肯塔基州平面坐标系（FIPS 1600）下的X、Y坐标；3. 以英尺为单位的高程值，源自高分辨率数字高程模型（Digital Elevation Model，DEM）；4. 点类型（最高或最低）；5. 重复标记（所有值均为0，表示无重复要素问题）。