search for: 0degrees

I have a data frame with a couple million lines and want to retrieve the largest and second largest values in each row, along with the label of the column these values are in. For example row 1 strongest=-11072 secondstrongest=-11707 strongestantenna=value120 secondstrongantenna=value60 Below is the code I am using and a truncated data.frame. Retrieving the largest value was easy, but I have

...to track radio-tagged birds, they are from automated radio telemetry receivers. I will applying the following formula diff <- ((strongest- secondstrongest)/100) bearingdiff <-30-(-0.0624*(diff**2))-(2.8346*diff) Then the bearing diff is added to strongestantenna (value0 = 0degrees) if the secondstrongestatenna is greater (eg value0 and value60), or if the secondstrongestantenna is smaller than the strongestantenna, then the bearingdiff is substracted from the strongestantenna. The only exception is that if value0 (0degrees) is strongest and value300(360de...