OpenersNotesSection(Spacer1)Details

This message is generated when the first element or one of the first elements in the indicated data point is not a real number.

(RefLink[Off, paclet:ref/Off])[message] switches off the message; (RefLink[On, paclet:ref/On])[message] switches it on. For example: (RefLink[Off, paclet:ref/Off])[Interpolation::indat].

OpenersPrimaryExamplesSection(Spacer1)Examples  (1)

OpenersExampleSection0(Spacer1)Basic Examples  (1)

An error occurs because the first element in each pair is not a number:

Interpolation[{{x1,1},{x2,2},{x3,3},{x4,4}}]

This shows valid input in (RefLink[Interpolation, paclet:ref/Interpolation]):

Interpolation[{{1,y1},{2,y2},{3,y3},{4,y4}}]

(RefLink[InterpolatingPolynomial, paclet:ref/InterpolatingPolynomial]) can be used for symbolic interpolation:

InterpolatingPolynomial[{{x1,1},{x2,2},{x3,3},{x4,4}},x]

({{DocumentationFooterIconsRelatedFunction.png, ({{See Also}, {(RefLink[Interpolation, paclet:ref/Interpolation])  ▪  (RefLink[ListInterpolation, paclet:ref/ListInterpolation])}})}})