| unit_conv {apsimx} | R Documentation |
performs common unit conversions
Description
This function is slowly getting better. Adding more unit conversions as I need them.
Usage
unit_conv(x, from, to, ...)
Arguments
x |
input variable |
from |
original units |
to |
target units |
... |
additional arguments passed to specific conversions |
Details
Function which performs common unit conversions
At the moment possible conversions are:
-
‘g/m2’ to ‘kg/ha’
-
‘kg/ha’ to ‘g/m2’
-
‘lb’ to ‘kg’
-
‘kg’ to ‘lb’
-
‘maize bu’ to ‘kg’
-
‘kg’ to ‘maize bu’
-
‘soy bu’ to ‘kg’
-
‘kg’ to ‘soy bu’
-
‘maize bu/ac’ to ‘kg/ha’
-
‘maize bu/ac’ to ‘g/m2’
-
‘kg/ha’ to ‘maize bu/ac’
-
‘g/m2’ to ‘maize bu/ac’
-
‘soy bu/ac’ to ‘kg/ha’
-
‘soy bu/ac’ to ‘g/m2’
-
‘kg/ha’ to ‘soy bu/ac’
-
‘g/m2’ to ‘soy bu/ac’
-
‘mm’ to ‘inches’
-
‘inches’ to ‘mm’
-
‘lb/ac’ to ‘kg/ha’
-
‘kg/ha’ to ‘lb/ac’
-
‘lb/ac’ to ‘g/m2’
-
‘g/m2’ to ‘lb/ac’
-
‘decimal’ to ‘degrees’
-
‘degrees’ to ‘decimal’
-
‘Fahrenheit’ to ‘Celsius’
-
‘Celsius’ to ‘Fahrenheit’
This is for metric and Imperial conversions Source: https://www.extension.iastate.edu/agdm/wholefarm/html/c6-80.html
Value
value of the input variable with new units
Examples
grain.yield.gm2 <- 600
grain.yield.kgha <- unit_conv(grain.yield.gm2, from = "g/m2", to = "kg/ha")
grain.yield.kgha
## Converting coordinates
require(sp)
unit_conv("42d 0' 0\" N", from = "degrees", to = "decimal")
unit_conv(42, from = "decimal", to = "degrees") ## EW by default
unit_conv(42, from = "decimal", to = "degrees", NS = TRUE)