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Estimates the inherent difficulty of the radio map
ipfRMID(fingerprints, positions, rangeRSSI = c(-100, 0), noRSSI = NA, gridSize = 5)
a matrix or a data frame containing the RSSI data (fingerprints) of the observations
a matrix or a data frame containing the positions of the fingerprints
range of the RSSI data
value used to represent a not detected AP
size of the grid to consider
a numeric value representing the RMID value (Radio Map Inherent Difficulty)
# NOT RUN { rmid <- ipfRMID(ipftrain[, 1:168], ipftrain[, 169:170], noRSSI = NA) # }
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