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This icon combines scalar fields for the purpose of plotting as a vector pair. The user supplies GRIB data of vector X and Y components (cartesian coordinates) or intensity/direction (polar coordinates) with the option of colouring the vectorial representation (arrows) according to the magnitude of a user supplied scalar quantity. The classic example is to plot a wind field from (U,V) components coloured according to Temperature. In order to apply a colour map, the Wind Plotting icon must be dropped into the plot.
The macro language equivalent is
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From Macro/Python this icon can be called as grib_vectors(). |
For an example, see Coloured Vectors Example.Gallery Examples using the Grib Vectors icon
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The Grib Vectors Editor
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Specifies the field to be used as the colouring key. If not supplied, the computed magnitude of the vector components will be used for colouring. The parameter accepts any GRIB icon as input.