In ArcMap 10.2 I have created a nested model where I am iterating through some feature classes in order to get the minimum value of a specific field for each of them and then collect the outputs using the Collect Values Tool. The output is named
Zminand for whatever reason it is a string.
Afterwards I want to get the minimum of these minima in order to use it as parameter in a following step of the main model.
I have tried to use the Calculate Value Tool as follows:
def lowest(Zmin): Zmin.split(';') LowestLine = min(Zmin) return LowestLine
Unfortunately I get the following error message:
ValueError: invalid literal for float(): -129.8;-119.4;-118.9;-157.3
My knowledge of Python is not really deep, however the problem is obviously in the type of the input. I tried to split it into a list of strings by using
before to convert it into floating points, but this is probably the wrong way and I do not know how to solve it.