Question

group by

Forum|Forum|5 years ago
February 26, 2020
2 replies
31 views

gylona

HEllo,

I want to create an attribute (distance) between two points. I am using AttributeCreator to do it. Here is the code:

@Evaluate(@sqrt((@Value(feature[+1].y)-@Value(y))*(@Value(feature[+1].y)-@Value(y))/(@Value(feature[+1].x)-@Value(x))*(@Value(feature[+1].x)-@Value(x))))

The problem is that I want to calculate it only between points where lineID is the same. How can I add a kind of group by?

Thanks

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+46

ebygomm
Influencer
Forum|Forum|5 years ago
February 26, 2020

You can use a conditional statement in the attributecreator, if @Value(LineID) = @Value(feature[+1].LineID) use the above expression, if not do nothing