I simply want to calculate the difference between two numerical values. (In this case elevation taken as an attribute)
I want to add a new attribute with this information and thus sing the AttributeManager.
My expression is as follow
1@Value(_elevation)-@Value(cover_z)But it come out as 1.87-3.14 in the new attribute. How do I make it actually subtract?
I found that _elevation had comma as delimeter whilst cover_z had period as delimiter.
I have tried to find out what datatype FME is interpreting the fields but there are no way of finding if FME see it as string or float?
I did however try to wrap each attriubute in @int8(<float>) to cast it to numeric, that did not work.
I used string replaces and got the to use the same delimiter, but that did not work either?
I just want to do a simple subtraction between values... any advice?
