1. A method for locating the features of a catheter for use in a localization system, comprising: providing a catheter having at least one feature; providing a catheter catalog for use by the localization system, wherein the catheter catalog comprises reference data relating to features of the catheter; placing the catheter into the localization field; creating a map with the localization field; locating the catheter on the map; correlating features of the catheter within the localization field with measurements made by the localization system when the feature is at various locations.