Fichier de données simulées sans bruit: disque uniforme (unite coords et rayon = mas) [intensity, x, y, radius] = [1.0, 0.0, 16.5012, 2.06265] Take care that T3 data seems to be wrong. This can be seen as follows (just checking the model): > w = lp_load_model(LP_SITE+"model/model_simul_unif_disk.i"); > lp_show_parameters,w name value prev_val vmin vmax scale fixed units "I": 1 1 0 10 AUTO 0 "R": 5 5 0 100 AUTO 0 milliarseconds "X": 0 0 -1000 1000 AUTO 0 milliarseconds "Y": 20 20 -1000 1000 AUTO 0 milliarseconds > lp_set_parameter, w, "Y", value=16.5012 // Solution > lp_set_parameter, w, "R", value=2.06265 // Solution > lp_show_parameters,w name value prev_val vmin vmax scale fixed units "I": 1 1 0 10 AUTO 0 "R": 2.06265 5 0 100 AUTO 0 milliarseconds "X": 0 0 -1000 1000 AUTO 0 milliarseconds "Y": 16.5012 20 -1000 1000 AUTO 0 milliarseconds > lp_plot_radial,w,newwin=1 // Perfect fit ! > lp_plot_radial,w,"VISamp",newwin=1 // Perfect fit ! > lp_plot_radial,w,"VISphi",newwin=1 // Perfect fit ! > lp_plot_radial,w,"T3amp",newwin=1 // Wrong. Model shape is expected. > lp_plot_radial,w,"T3phi",newwin=1 // Wrong. No particular structure in data !