Yoga

extern sensors_compslopes;
/* DOCUMENT sensors_compslopes
sensors_compslopes,yoga_sensors_obj,nsensor,yoga_rtc_obj,ncentro[,nmax/threshold]

general slopes computation for a given sensor in a ySensors object

yoga_sensors_obj : the ySensors object
   nsensor          : index of given wfs
   yoga_rtc_obj     : the yRTC object
   ncentro          : index of given centroider
   nmax             : nmax brightest pixels (if not provided set to default in centroider struct)
   threshold        : threshold value (if not provided set to default in centroider struct)