*2.3. Beach Elevation Profiles*

From the elevation model rasters of the study area generated for each year, beach profiles were extracted. By overlaying a shapefile of the R-monuments located on the North Captiva coastline, markers for intervals along the coast were able to be displayed and served as guides for profile extraction for each year studied. Lines extending from east to west were interpolated, and from this, a point profile and point graph were displayed showing the data points along the path. These data points were exported into Excel, where scatterplots were produced based on the data from each R-monument and year in the study. Compiling data from each year in the study and along each R-monument provided information on the beach elevation changes across the study area.
