I want to symbolise based on the values, so for example I have many value fields (see pic) The map is drawn so that all these values have the same symbology and are not distinct. I tried to add all values but this only adds all the attributes of a single field. I want to add all the value fields from NVC_TYPE1 up to RSPB....
You can only symbolize by a maximum of 3 fields, and to do that you need to select:
Unique values, many fields
Under Categories, on the left side of the window.
But, if you want to symbolize based on the 15+ fields in your screenshot, you might want to rethink your approach. You could always create a new field, and field calc the values of all the other fields, and symbolize by the new field.
you shouldn't be losing information, but it does want you to pick which thing you are classifying by. You couldn't classify by the description or comments fields for example, that wouldn't even be possible. I know one thing we often did in class was to do reclassifications that take the values in the selected field and redistribute it like a 1-10 scale for example. If what you're trying to do involves coming up with an overall rating based on different values, you could go into the map algebra function after reclassifying each attribute into new layers with scales that mesh, and then use the map algebra to create a weighted scale. ( Population_reclass*.35+vegetation_type_reclass*.65).
Hopefully that helps, but the question was still somewhat confusing.