Calculating extent and coverage for Bathymetry Data

01-16-2019 08:32 AM
Esri Contributor
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Calculating the extent and coverage for your bathymetry data just got easier.

Bathymetry data typically comes as a processed image (.tif or .asc) or maybe even a Bathymetric Attributed Grid (BAG) file.  This allows access to a single band of values that represent elevation.  This data is commonly stored as 32 bit floating point.  While that’s all very informative it’s sometimes difficult to understand how many of the pixels contain data and how many don’t and just how much area was mapped.

This tool reclassifies the bathymetry data and then generates polygon footprint for the areas where data exists.

Results of tool showing labeled polygon of areas mapped.

The tool started as a model in ArcGIS Pro and is now  available as a geoprocessing package (.gpkx) so you can use it in your ArcGIS Pro projects.

Model created in ArcGIS Pro using Model Builder

What is a geoprocessing package?

A geoprocessing package is a convenient way to share geoprocessing workflows by packaging one or more tools and the data used by the tools into a single compressed file (.gpkx). Geoprocessing packages are created from one or more successfully run geoprocessing tools.

You can add the geoprocessing package to ArcGIS Pro by downloading it and copying the file (.gpkx) to your ArcGIS Pro Project folder in windows explorer. Then browse to that location in ArcGIS Pro using your Catalog and add the tool to the current project by right clicking on it.

Try it out!

Catalog in ArcGIS Pro showing how to add geoprocessing (.gpkx) package to project.

ArcGIS Pro showing results of geoprocessing tool.

About the Author
Keith VanGraafeiland is a Principal Product Engineer with Esri in Washington D.C. He serves as the Ocean Content Lead for the ArcGIS Living Atlas of the World, a long-term projects whose emphasis is on visually appealing and useful map information products. In his role at Esri, he is responsible for curating, developing and implementing ocean related content for the GIS community. This includes maintaining a network of authoritative data providers and working with them towards nominating their layers, maps and apps for inclusion the Living Atlas of the World and working with the community to understand information needs.