For one dimensional maps the trajectory scaling functions is invariant under
coordinate transformations and can be used to compute any ergodic average. It
is the most stringent test between theory and experiment, but so far it has
proven difficult to extract from experimental data. It is shown that the main
difficulty is a dephasing of the experimental orbit which can be corrected by
reconstructing the dynamics from several time series. From the reconstructed
dynamics the scaling function can be accurately extracted.Comment: CYCLER Paper 93mar008. LaTeX, LAUR-92-3053. Replaced with a version
with all figure