ee.Array.log10

  • Calculates the base-10 logarithm for each element within an input array.

  • Returns a new array containing the calculated logarithms.

  • Accepts a single argument: the input array.

  • Usable in both server-side (JavaScript) and client-side (Python) environments.

 On an element-wise basis, computes the base-10 logarithm of the input.

UsageReturns
Array.log10()Array
ArgumentTypeDetails
this: inputArrayThe input array.

Examples

Code Editor (JavaScript)

print(ee.Array([0.1, 1, 10, 100]).log10());  // [-1,0,1,2]

var start = 0.1;
var end = 100;
var points = ee.Array(ee.List.sequence(start, end, null, 50));
var values = points.log10();

// Plot log10() defined above.
var chart = ui.Chart.array.values(values, 0, points)
    .setOptions({
      viewWindow: {min: start, max: end},
      hAxis: {
        title: 'x',
        viewWindowMode: 'maximized',
      },
      vAxis: {
        title: 'log10(x)',
      },
      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, 1, 10, 100]).log10())  # [-1,0,1,2]

start = 0.1
end = 100
points = ee.Array(ee.List.sequence(start, end, None, 50))
values = points.log10()

df = pd.DataFrame({'x': points.getInfo(), 'log10(x)': values.getInfo()})

# Plot log10() defined above.
alt.Chart(df).mark_line().encode(
    x=alt.X('x'),
    y=alt.Y('log10(x)')
)