Custom color ramps can allow you to better visualize your data to suit your needs. Here, you will learn how to create two color ramps for topobathy LiDAR - one for bathymetric elevations, and one for topographic elevations.
The USDA Geospatial Data Gateway is a great source for natural resources-related data and can be used to download pre-processed collarless topographic maps in MrSid format. This blog posting provides an alternative method for acquiring collarless topographic maps and helps to eliminate processing as stated in related blog postings.
Transform USGS Topographic maps from the GeoPDF format into a more GIS-friendly format - the GeoTIFF. GDAL, an open-source software program that has been specifically designed for use in reading and writing information to geospatial raster data formats. Find out how..
GeoTIFFs are a high-quality raster storage format that require large amounts of disk space. JPEG2000s provide the same high-quality raster appearance, but require significantly less disk space. This second in the series details how to create seamless basemaps from USGS Topographic GeoPDF's using this more efficient file storage format.
Learn to create seamless basemaps from the US Topographic maps in GeoPDF format by converting them into a "GIS-friendly" format such as GeoTIFF all with a basic script and Global Mapper 15.
This short blog will quickly walk you through downloaded the newest topographic maps for an areas of your choosing from the National Map Viewer. This free download platform provides users with access to free topographic data for the entire country.