Once here, introduce the profile that we want to extract information from in vector format, and the Digital Terrain Model of the study area. Previously, activate the 3D Analyst option and access to it through > 3D Analyst Tools > Functional Surface > Add Surface Information. To make this calculation we will use the Add Surface Information tool, included in the ArcGIS 3D Analyst option.
In the chosen area to reproduce this example, this difference is 150 meters approximately in a straight line distance that is around 10,5 km. This consideration is necessary as, depending on the terrain that we are working on, the difference between the measured distance without taking into account the relief and 3D distance can be pretty large. The 3D area is then added in a new field to your polygon feature class attribute table. A shapefile is one of the spatial data formats that you can work with and edit in ArcGIS. If this is so, we can easily do this extracting the information from the Digital Terrain Model. Use Add Surface Information with your polygon as input feature class and the corresponding TIN as input surface.
We will need to value if we need to take into account the topography of the study area to calculate this data. It is quite probable that for some of our analysis we will need to include the distance between two given points, measured in a straight line.
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