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ee.Array.cos

  • Array.cos() computes the cosine of each element in an input array, assuming the input is in radians.

  • This operation returns an array containing the cosine values.

  • The input to Array.cos() must be an array.

 On an element-wise basis, computes the cosine of the input in radians.

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

Examples

Code Editor (JavaScript)

varπ=Math.PI;print(ee.Array([-π]).cos());// [-1]print(ee.Array([-π/2.0]).cos());// [Almost zero]print(ee.Array([0]).cos());// [1]print(ee.Array([π/2.0]).cos());// [Almost zero]print(ee.Array([π]).cos());// [-1]varstart=-π;varend=π;varpoints=ee.Array(ee.List.sequence(start,end,null,50));varvalues=points.cos();// Plot cos() defined above.varchart=ui.Chart.array.values(values,0,points).setOptions({viewWindow:{min:start,max:end},hAxis:{title:'x',viewWindowMode:'maximized',ticks:[{v:start,f:'-π'},{v:0,f:0},{v:end,f:'π'}]},vAxis:{title:'cos(x)',ticks:[{v:-1,f:-1},{v:0,f:0},{v:1,f:1}]},lineWidth:1,pointSize:0,});print(chart);

Python setup

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

importeeimportgeemap.coreasgeemap

Colab (Python)

importmathimportaltairasaltimportpandasaspdπ=math.pidisplay(ee.Array([-π]).cos())# [-1]display(ee.Array([-π/2.0]).cos())# [Almost zero]display(ee.Array([0]).cos())# [1]display(ee.Array([π/2.0]).cos())# [Almost zero]display(ee.Array([π]).cos())# [-1]start=-πend=πpoints=ee.Array(ee.List.sequence(start,end,None,50))values=points.cos()df=pd.DataFrame({'x':points.getInfo(),'cos(x)':values.getInfo()})# Plot cos() defined above.alt.Chart(df).mark_line().encode(x=alt.X('x',axis=alt.Axis(values=[start,0,end])),y=alt.Y('cos(x)',axis=alt.Axis(values=[-1,0,1])))

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Last updated 2023-10-06 UTC.