makeRx: Make experiment or prescription

In paulhegedus/OFPE: On-Farm Precision Experiments (OFPE) Data Management and Analysis Tools

Make experiment or prescription

Description

This function takes the experiment or prescription 'sf' object as well as the field boundary 'sf' object. The area of the experiment or prescription is subtracted from the field boundary, and the two are combined to create one output with the base rate around the experiment or prescription rates.

While named 'makeRx', this is the function for creating new experiments as well.

Usage

makeRx(rx_sdt, fld_bound, rx_for_year, conv, strat_dat_parms = NULL)

Arguments

rx_sdt	A 'sf' object containing the experiment or prescription generated by user inputs.
fld_bound	A 'sf' object containing the field boundary(ies) with a base rate application.
rx_for_year	The year that the prescription or experiment is made for. Added to a column to specify the data.
conv	The conversion factor between lbs of the input to the units of the as-applied input (i.e. lbs N/ac to gal urea/ac). Should be from RxClass object or is 1 / the conversion factor to go from lbs of the experimental input to units of the as-applied input.
strat_dat_parms	Optional, only if stratification used to make the experimental rates. Named list by fieldname that contains a list for each field containing named slots for 'table', 'grid_size', 'path', 'year', and 'col_name' to define the stratification data to use for randomly applying experimental rates. You can stratify on multiple variables per field, with priority given by order. Each of the sublist slots for each field must have the same dimensions. Note that more stratification variables increases processing times. The table ('table') indicates the location within the database that the stratification data is stored in. This can either be from an aggregated table ('yld', 'pro', or 'sat') or can be from a raw table. Simply specify the table name and the schema will be derived from the farmername. For data from an aggregated table, the user must also provide the size ('grid_size') of the grid cells used to aggregate the data the user desires in the aggregated dataset (i.e. 10, 30 meters). This is a numeric variable and if stratifying on raw data, this parameter can be left NA. Conversely, if you are stratifying on raw data, an additional parameter called 'path' needs to be supplied in a named slot of each field's sublist to specify the original filename of the data imported into the database. If the desired data is from an aggregated table than enter NA for the 'path'. The year of the desired data must also be provided ('year'). This is to specify which data in the aggregated table to use. If using raw data, the year is automatically derived from the data specified by the filename. Finally, the user must supply the column name ('col_name') of the variable to stratify on. This must be supplied for both raw and aggregated data.

Value

A 'sf' object with the final output for the producer.

paulhegedus/OFPE documentation built on Nov. 23, 2022, 5:09 a.m.