In some cases, it is necessary to derive information from equally spaced transects perpendicular to a main line feature (roads, pipelines, rivers). For example, to study the distribution of amphibians along a coastal swamp, or to determine the water velocity along a river. In ArcMap, transects are created using multiple geoprocessing tools, as detailed in How To: Create equally spaced transects perpendicular to a line feature in ArcMap. In ArcGIS Pro, transects are created using the Generate Transects Along Lines tool.
The image below shows a 3000-meter portion of the Middle Fork Kaweah River in Sequoia National Park, California. The effect of changing river velocity on soil composition is examined by studying the soil composition at transects along the river at regular intervals.
Use the following steps to create equally spaced transects perpendicular to a line feature in ArcGIS Pro:
Note: Unlike in ArcMap, creating transects in ArcGIS Pro does not require the creation of a route feature class. It is possible to create transects using a simple line feature class (without M-values and the route identifier field).
The image below shows equally spaced transects perpendicular to the line feature, River_velocity, at 200 meters intervals.
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