What kind of computation do you want to do to reduce the number?

This is how you could create a feature from a list of points in a python caller

import fme
import fmeobjects
 
class FeatureProcessor(object):
    def __init__(self):
        pass
    def input(self,feature):
        xcoords = s929437, 929438, 929441, 929442, 929443, 929444]
        ycoords = 10,1,2,3,4,5]
        coords = list(zip(xcoords,ycoords))
        newFeature = fmeobjects.FMEFeature()
        newFeature.addCoordinates(coords)
        self.pyoutput(newFeature)
    def close(self):
        pass

The computation is a simple Python program. Each line is a certain length, and every point has a length from the first point, following the line, not just a 3D distance . All in 3D, with curved lines.

So I make 50 points that are equidistant, as I can get the total length, and I put them inbetween the other that I have, to get them as close as possible as where they should be, if the line was divided as I wanted. The approximations are good enough, I have checked beforehand.

I can draw it if you want, but ebygomm has an answer close to what I am looking for, thank you.

import fme
import fmeobjects
 
class FeatureProcessor(object):
    def __init__(self):
        pass
    def input(self,feature):
        xcoords = s929437, 929438, 929441, 929442, 929443, 929444]
        ycoords = 10,1,2,3,4,5]
        coords = list(zip(xcoords,ycoords))
        newFeature = fmeobjects.FMEFeature()
        newFeature.addCoordinates(coords)
        self.pyoutput(newFeature)
    def close(self):
        pass

I did not expect FME to simply erase the features that were here before, but thanks a lot for this, it was much more simple than I thought

This is creating a whole new feature, so if there are any other attributes required they won't be kept. An alternative is to remove the existing geometry before replacing, or clone the existing feature and then remove and replace the geometry. A lot depends on your inputs, if your PythonCaller is just doing a 1 in 1 out process something like

import fme
import fmeobjects
 
def processFeature(feature):
        xcoords = <929437, 929438, 929441, 929442, 929443, 929444]
        ycoords = >0,1,2,3,4,5]
        coords = list(zip(xcoords,ycoords))
        feature.removeGeometry()
        feature.addCoordinates(coords)

 this may be more suitable