I am fairly new to QGIS and search as I might in the manual, training manuals and widely on the net I can't find an in-depth explanation of how to set up a Decimal Number (real) field in my attribute table properly.
I have a number of vector layers, each with a polygon on them. I need to add a decimal field to manually insert a rate per 1,000 of the population. The number is more than likely going to be between n.n and nn.n
I have tried all sorts of different width and precision figures, but either the field is too small to take the number, or it is large enough, but I can't get a decimal point in there. Does this mean that the decimal number is less than one?
When I have entered some information into the cell and pressed Enter the cell always reverts to NULL.