Replacing NAs with interpolated values

Hi there,

I've got this vector:

-84  -87  -90  -90  -89  -86 NA NA NA NA NA NA NA NA NA NA NA NA  -96 
-99 -100  -99  -96 -92  -89  -87  -87  -88  -90  -92  -94  -95  -96 
-97  -97  -97  -96  -95

Is there a function in R which replaces the NAs with "interpolated"
values between -86 and -96?

Thanks, Sven
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