What pixel size is recommended for accurately mapping an 8-foot sidewalk?

To accurately map an 8-foot sidewalk, selecting a pixel size of 4 feet is ideal because it provides a balance between resolution and manageability of the data. A pixel size that is smaller than the actual feature ensures that the width of the sidewalk can be represented accurately within the raster data.

Using a 4-foot pixel size allows for sufficient detail to capture the sidewalk's geometry and provides adequate resolution to differentiate it from surrounding features or noise that may exist in the dataset. This level of detail ensures that the mapping can portray the sidewalk both spatially and geometrically without losing essential information or context.

If the pixel size were equal to or larger than 8 feet, such as 8 feet or larger, the mapping might miss important features like curb lines or adjacent landscaping, leading to a generalized and potentially misleading representation of the sidewalk. Choosing a pixel size of 2 feet might provide some benefit but can also lead to unnecessary complexity in data processing and storage without significantly enhancing the necessary detail for the sidewalk. Hence, 4 feet is the optimal choice for clarity and accuracy in this mapping task.