exponential_integral

Function to calculate the exponential integral used in the Theis well function

exponential_integral(x)

Arguments

x	Numeric value

Value

This function returns the value of the exponential integral

See also

Other theis functions: theis_WF_LT_dlogt, theis_WF_LT, theis_calculate_parameters, theis_solution_dlogt, theis_solution_initial, theis_solution, theis_well_function_large, theis_well_function_small, theis_well_function

Examples

x <- seq(0.01,10,0.05)
Ei <- exponential_integral(x)
plot(x, Ei, type = "p", log = 'y')
#> Warning: 8 y values <= 0 omitted from logarithmic plot