  In this paper, we present light curves for 3C 279 over a time period of six
years; from 2008 to 2014. Our multiwavelength data comprise 1 mm to gamma-rays,
with additional optical polarimetry. Based on the behaviour of the gamma-ray
light curve with respect to other bands, we identified three different activity
periods. One of the activity periods shows anomalous behaviour with no
gamma-ray counterpart associated with optical and NIR flares. Another anomalous
activity period shows a flare in gamma-rays, 1 mm and polarization degree,
however, it does not have counterparts in the UV continuum, optical and NIR
bands. We find a significant overall correlation of the UV continuum emission,
the optical and NIR bands. This correlation suggests that the NIR to UV
continuum is co-spatial. We also find a correlation between the UV continuum
and the 1 mm data, which implies that the dominant process in producing the UV
continuum is synchrotron emission. The gamma-ray spectral index shows
statistically significant variability and an anti-correlation with the
gamma-ray luminosity. We demonstrate that the dominant gamma-ray emission
mechanism in 3C 279 changes over time. Alternatively, the location of the
gamma-ray emission zone itself may change depending on the activity state of
the central engine.
