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One feature of Metview 3 which is not directly available in Metview 4 is Contour Splitting. This was a feature which enabled different isoline styles to be applied above, below and on a particular threshold (typically zero, for the purpose of examining the difference between two fields). To emulate this behaviour in Metview 4 requires the creation of three separate contour icons which can then be dropped together into the plot (or converted into three separate calls to mcont). The following code examples show a default split contour definition in Metview 3 alongside the equivalent code in Metview 4.
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See Migration: Split Contours for example Macro code and plots.
In Macro, pcont is replaced by mcont.
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