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oce (version 1.8-3)

matrixShiftLongitude: Rearrange Areal Matrix so Greenwich is Near the Centre

Description

Sometimes datasets are provided in matrix form, with first index corresponding to longitudes ranging from 0 to 360. matrixShiftLongitude cuts such matrices at longitude=180, and swaps the pieces so that the dateline is at the left of the matrix, not in the middle.

Usage

matrixShiftLongitude(m, longitude)

Value

A list containing m and longitude, both rearranged as appropriate.

Arguments

m

The matrix to be modified.

longitude

A vector containing the longitude in the 0-360 convention. If missing, this is constructed to range from 0 to 360, with as many elements as the first index of m.

See Also

shiftLongitude() and standardizeLongitude().