Data readers

The Data reader components are used to read external data for use by CLEM. At present this consists of crop and pasture plant production data and general resources inputs and outputs. They can be placed anywhere within the simulation branch of the APSIM simulation. It is recommended to place them with the activities using them or below the CLEM component.

There are five styles of Data readers available depending upon style and source of external data.

The content of these files will have to be viewed in other applications as APSIM does not currently provide data viewers for this input data.

The Crop data reader is used to read external ASCII text files or Excel spreadsheets containing crop and forage production data. These data can be from APSIM crop simulations, field data, or expert opinion as long as it is provided in the correct format. A second version (Crop data reader SQLite) is designed to read or SQLite database tables containing the production data.

The Pasture data reader is used by grazing simulations where a pasture production lookup data cube has been created using a pasture production model. At present this reader is set to use the default columns names. A second version of this reader (Pasture data reader SQLite) is available when the database is provided in an SQLite format and will perform the simulation more efficiently. This version also allows you to specify the names of the columns containing the data.

The Resource data reader is used to manage input and output of resources external to the farm. This reader allows you to specify the names of the columns containing the data.

The Price data reader is used to manage input of resources price schedules. This reader will mange the setting of prices throughout the simulation based on the input file.