Classifying land use in polygons using aerial imagery

Question

I am trying to use the shapefile here: https://environment.data.gov.uk/DefraDataDownload/?mapService=EA/HistoricLandfill&Mode=spatial  to work out how much of the sites are covered in trees. I have managed to load the shapefile and aerial images (World Imagery basemap) and clip the map to just show the imagery within the polygons. Now I would like to classify how much of each polygon is covered with trees however the classification tool is greyed out (I think because it is not a raster file). Is there any way around this? I am using ArcMap 10.1.

Hornbydd · Answer

Without access to your data it is difficult to speculate what the issue is. May be it's the format of the data or may be it's something completely different such as a daft file name that is invalid? If you have no prior experience to image classification then I would recommend you start playing with the isocluster tool (unsupervised). This is one of the easier tools to get to grips with as you basically chuck the raster at it and say how many classes you want. There are more superior techniques but if this tool throws an error it should at least help you track down the source of the problem...

Answered by Hornbydd on September 2, 2021

Classifying land use in polygons using aerial imagery

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