The ability to collect geographically referenced information using your smartphone or tablet is an increasingly popular way to quickly and efficiently collect data. This blog posting will focus on the steps necessary to get a web map up and running for use within the Collector app.
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.
Creating eye-catching visualizations is crucial to a memorable presentation. Here we will introduce an Esri tool that allows users to “split” a topobathy digital elevation model (DEM) into two separate rasters, allowing for better visualization for submerged and topographic elevations.
Topobathy LiDAR is the combination, or parallel collection of traditional terrestrial LiDAR and bathymetric LiDAR. Here we will walk through the process of creating a high-quality topobathy Digital Elevation Model utilizing a portion of the 2014 NOAA National Geodetic Survey (NGS) Topobathy LiDAR data.
With the July 2015 release of ArcGIS Online, users can now add metadata to their organization's items. This allows users to view the complete metadata record for any item within an organizations account.
Bathymetric data is often in one vertical datum and terrestrial elevations in another. You open the data in ArcGIS and hope that the on-the-fly projection takes care of things, only to realize it only works for the horizontal datum. Learn the steps necessary to convert LAS data from NAVD 88 to MHW, these methods could also be used for other vertical datum transformations.
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..
This workflow uses zero credits when publishing image tiles to ArcGIS Online. Check it out!
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.