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ee.Array.asin

  • TheArray.asin() method computes the arcsine in radians for each element of an input array.

  • This method takes an Array as input and returns an Array.

  • The provided examples demonstrate how to useArray.asin() in both JavaScript and Python, including plotting the function.

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

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

Examples

Code Editor (JavaScript)

print(ee.Array([-1]).asin());// [-π/2]print(ee.Array([0]).asin());// [0]print(ee.Array([1]).asin());// [π/2]varstart=-1;varend=1;varpoints=ee.Array(ee.List.sequence(start,end,null,50));varvalues=points.asin();// Plot asin() 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:start},{v:0,f:0},{v:end,f:end}]},vAxis:{title:'asin(x)',ticks:[{v:-Math.PI/2,f:'-π/2'},{v:0,f:0},{v:Math.PI/2,f:'π/2'}]},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)

importmathimportaltairasaltimportpandasaspddisplay(ee.Array([-1]).asin())# [-π/2]display(ee.Array([0]).asin())# [0]display(ee.Array([1]).asin())# [π/2]start=-1end=1points=ee.Array(ee.List.sequence(start,end,None,50))values=points.asin()df=pd.DataFrame({'x':points.getInfo(),'asin(x)':values.getInfo()})# Plot asin() defined above.alt.Chart(df).mark_line().encode(x=alt.X('x',axis=alt.Axis(values=[start,0,end])),y=alt.Y('asin(x)',axis=alt.Axis(values=[-math.pi/2,0,math.pi/2])))

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Last updated 2024-09-19 UTC.