A system includes an electrical interface for communicating with a probe, and a processor. The electrical interface is configured to be inserted into a heart of a patient. The processor is configured to (A) receive from the probe, via the electrical interface, (i) position-signals indicative of a position of a distal tip of the probe in the heart, (ii) a contact-force indication indicative of a contact force exerted on the distal tip, and (iii) an electrophysiological (EP) measurement acquired by the distal tip at the position, (B) calculate a contact-force vector based on the contact-force indication received from the distal tip, and (C) based on the position-signals and on the contact-force vector, estimate a location, on an electro-anatomical map of the heart, at which the distal tip touches tissue, and to update the electro-anatomical map with the EP measurement, associated with the estimated location.
