ee.Array.erfcInv

  • The erfcInv() method computes the inverse complementary error function for each element of an input array.

  • It takes an array as input and returns an array of the same shape containing the computed values.

  • Examples are provided in both JavaScript and Python demonstrating how to use the erfcInv() method and visualize its output.

 On an element-wise basis, computes the inverse complementary error function of the input.

UsageReturns
Array.erfcInv()Array
ArgumentTypeDetails
this: inputArrayThe input array.

Examples

Code Editor (JavaScript)

print(ee.Array([0.1]).erfcInv());  // [1.163]
print(ee.Array([1]).erfcInv());  // [0]
print(ee.Array([1.9]).erfcInv());  // [-1.163]

var start = 0.001;
var end = 1.999;
var points = ee.Array(ee.List.sequence(start, end, null, 50));
var values = points.erfcInv();

// Plot erfcInv() defined above.
var chart = ui.Chart.array.values(values, 0, points)
    .setOptions({
      viewWindow: {min: start, max: end},
      hAxis: {
        title: 'x',
        viewWindowMode: 'maximized',
        ticks: [
          {v: 0},
          {v: 1},
          {v: 2}]
      },
      vAxis: {
        title: 'erfcInv(x)',
        ticks: [
          {v: -3},
          {v: 0},
          {v: 3}]
      },
      lineWidth: 1,
      pointSize: 0,
    });
print(chart);

Python setup

See the Python Environment page for information on the Python API and using geemap for interactive development.

import ee
import geemap.core as geemap

Colab (Python)

import altair as alt
import pandas as pd

display(ee.Array([0.1]).erfcInv())  # [1.163]
display(ee.Array([1]).erfcInv())  # [0]
display(ee.Array([1.9]).erfcInv())  # [-1.163]

start = 0.001
end = 1.999
points = ee.Array(ee.List.sequence(start, end, None, 50))
values = points.erfcInv()

df = pd.DataFrame({'x': points.getInfo(), 'erfcInv(x)': values.getInfo()})

# Plot erfcInv() defined above.
alt.Chart(df).mark_line().encode(
    x=alt.X('x', axis=alt.Axis(values=[0, 1, 2])),
    y=alt.Y('erfcInv(x)', axis=alt.Axis(values=[-3, 0, 3]))
)