Interpolation::inddp ListInterpolation::inddp

Details

This message is generated when the data is given as a grid and the grid coordinates are not all distinct.
Off[message] switches off the message; On[message] switches it on. For example: Off[Interpolation::inddp].

An error occurs because the grid points specified in the second argument of ListInterpolation are not all distinct:

This shows a valid specification of grid points in ListInterpolation:

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