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For the 'an_1x1.mv' icon, the plot contents can be changed by editing the plot1 variable in the macro . By default the 10m wind is shownas shown in the above first exercise.

To alter the plotted field, right-click and choose 'Edit'.

It is possible to overlay multiple fields by putting them in square brackets like this:

You will find a list of available parameters in the macro.

After editing the macro text, you can optionally save using the 'File' menu and 'Save'.

Display the plot by clicking:

Animate the plots in the display window by clicking

 The  For the an_2x2.mv icon the number of maps appearing in the plot layout can be 1, 2, 3 or 4.  This is true of all the icons labelled '2x2'.

Macro an_2x2.mv demonstrates how to plot a four-map layout in a similar fashion to the one-map layout. The only difference here is that you need to define four plots instead of one.

Right-click on the icon and select 'Edit'. Change the plot layout like this:

Note how some plots can be single parameters whilst others can be overlays of two (or more) fields.

Wind parameters can be shown either as arrows or as feather by adding '_f' to the variable name.

Two map types are available covering a different area.

With mapType=0, the map will cover a smaller geographical area centred on the UK.

With mapType=1, the map will cover most of the North Atlantic