Montana NAIP 2011

This is an ArcGIS Server Image Service of the 4-band 2011 National Agricultural Imagery Program (NAIP) orthorectified digital aerial photos of Montana. The one-meter ground sample distance (GSD) ortho images were rectified to a horizontal accuracy that matches within six meters of photo-identifiable ground control points, which are used during image inspection. NAIP imagery may contain as much as 10% cloud cover per tile. The data were created for the U.S. Farm Services Agency National Agricultural Imagery Program (https://www.fsa.usda.gov/programs-and-services/aerial-photography/index) by Surdex Corporation. A version of the data in Montana State Plane Coordinates (NAD83 High Accuracy Reference Network, meters) was provided to the State Library as a collection of seamless 4-band GeoTIFF images. An Esri shapefile of the TIFF image index is available at: https://ftpgeoinfo.msl.mt.gov/Data/Spatial/MSDI/Imagery/2011_NAIP/naip_2011_tif_index.zip An Esri shapefile of the dates the images were collected is available at https://ftpgeoinfo.msl.mt.gov/Data/Spatial/MSDI/Imagery/2011_NAIP/24_km_tiles/00_NAIP_2011_dates.zip Imagery defaults to natural color. To view the imagery as false-color infrared (CIR), select band 4 as the red image, band 1 as the green, and band 2 as the blue. Or you can use the three processing templates: Natural Color, Color Infrared, and Normalized Difference Vegetation Index (NDVI) to symbolgize the service. The data are also available for download in MrSID format from the State Library at: https://montana.maps.arcgis.com/home/webmap/viewer.html?webmap=3e7d65205e23415e825c6e7936f21e51本数据集为蒙大拿州2011年美国国家农业影像计划（National Agricultural Imagery Program, NAIP）的四波段正射校正数字航空影像的ArcGIS Server影像服务。该影像地面采样距离（Ground Sample Distance, GSD）为1米，正射校正后的水平定位精度与影像可识别的地面控制点偏差不超过6米，此类控制点将用于影像质检环节。单幅瓦片的NAIP影像云覆盖比例最高可达10%。 本数据集由Surdex公司为美国农业服务局下属的国家农业影像计划制作，项目官方网址为https://www.fsa.usda.gov/programs-and-services/aerial-photography/index。 采用蒙大拿州平面坐标系（NAD83高精度参考网络，单位为米）的数据集版本，以无缝四波段GeoTIFF影像集合的形式提交至州图书馆。 平台提供的Web服务包括：ArcGIS Server影像服务、开放地理空间联盟（Open Geospatial Consortium, Inc., OGC）网络覆盖服务（Web Coverage Service, WCS）以及OGC网络地图服务（Web Map Service, WMS）。 影像服务与网络覆盖服务可为用户直接访问原生GeoTIFF文件与像素数据，用于地理处理与影像分析工作。 原始GeoTIFF文件可通过向州图书馆提交申请获取。 可通过以下链接获取TIFF影像索引的Esri Shapefile文件：https://ftpgeoinfo.msl.mt.gov/Data/Spatial/MSDI/Imagery/2011_NAIP/naip_2011_tif_index.zip；可通过以下链接获取影像采集日期的Esri Shapefile文件：https://ftpgeoinfo.msl.mt.gov/Data/Spatial/MSDI/Imagery/2011_NAIP/24_km_tiles/00_NAIP_2011_dates.zip。 影像默认采用自然色彩显示模式。若需以假彩色红外（False-color Infrared, CIR）模式查看影像，请将波段4映射至红色通道、波段1映射至绿色通道、波段2映射至蓝色通道。 以下为OGS服务的连接地址： WCS：https://gisservicemt.gov/arcgis/rest/services/MSDI_Framework/NAIP_2011/ImageServer/WCSServer WMS：https://gisservicemt.gov/arcgis/rest/services/MSDI_Framework/NAIP_2011/ImageServer/WMSServer 用户也可通过州图书馆获取MrSID格式的下载版本，下载地址为：https://montana.maps.arcgis.com/home/webmap/viewer.html?webmap=3e7d65205e23415e825c6e7936f21e51