A meteorological workstation provides for editing of raw data at its input by providing intelligent control of extraction of data from one or more data streams of collected weather data. Commands by the operator to the graphics processing of a weather forecasting and numerical modelling application cause the generation of commands to a dedicated processor controlling acceptance or extraction of data. Thus, data to be processed is limited, at any given time, to the data actually needed by the meteorological workstation under user control and has the effect of allowing the workstation user to control the source of the data being collected. Intelligent direction of the selected data also allows the formation of messages and the issuance of advisories and warnings even when the workstation is unattended. IMAGE
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