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Overview

One of Metview's most powerful features is its data processing ability. Data from various sources can be combined and manipulated using high- or low-level commands.XXXX Download data

Fieldset Manipulation

A fieldset is a collection of fields stored physically in GRIB files. Metview has many built-in functions and operators to manipulate fieldsets, from simple arithmetic operators to vertical integrations through the atmosphere. Many of these operations are available from the icon-based user interface, all are available in the Macro language. The results can be stored on disk, or passed to other functions for further manipulation.

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We could have done this a bit quicker - there was no need to execute the fc_an_diff icon. If you Clear the cache by right-click clicking the icon and choose choosing clear result, you can now directly choose visualise . Now directly visualise the icon - the execute action is performed in the background, as it is required before visualisation can occur.

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Visualise the U wind field (via the GRIB Filter icon you created earlier) and apply the supplied gridpoints icon (in the solutions folder) to display the locations of the grid points - they are on a regular 1.5 degree grid.

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