approx1 interpolates data along the first dimensions.  
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approx1 interpolates data along the first dimensions. 
It has three options for the type of interpolation to perform:
C Interface for signals interpolation on one dimensional signals. 
- Parameters
- 
  
    | [out] | out | is the array with interpolated values |  | [in] | in | is the input array |  | [in] | pos | array contains the interpolation locations |  | [in] | method | is the interpolation type, it can take one of the values defined by the enum af_interp_type |  | [in] | offGrid | is the value that will set in the output array when certain index is out of bounds |  
 
- Returns
- AF_SUCCESS if the interpolation operation is successful, otherwise an appropriate error code is returned. 
 
 
C++ Interface for data interpolation on one dimensional signals. 
- Parameters
- 
  
    | [in] | in | is the input array |  | [in] | pos | array contains the interpolation locations |  | [in] | method | is the interpolation type, it can take one of the values defined by the enum af_interp_type |  | [in] | offGrid | is the value that will set in the output array when certain index is out of bounds |  
 
- Returns
- the array with interpolated values