The thing is simple: I simply want to generate a function (in my case an exponential y=exp(-x*w)) to compare with data, therfore I want to generate it in the sam x spacing as the data. In addition I want to take the values from a file with the w data (froma a fitting for example). I do NOT know if that is the easiest way to do it, but it seems to work If I am working at file 1:

oy | I will act in the y axis |

50 | I will copy the values of x in the y axis (I am now choosing to get the values from “somewhere”) |

x | I copy the x data (this “somewhere” is the x data). And now I have a new file with y=x values |

Nx=y | I will operate in the redcently new created Nx=y file with y=x, therefore all what I do with y, I do it with x |

oy | * multiply |

ec | -1 we multiply by -1 to get -x |

i | second argument is a point per file (in our case w) |

Npar | from the file with parameters, and we get -x*w |

oy | modifiy y |

3 | to selsect the function exponential |

and finally we get exp (-x*w)