Google Earth Engine（gee）中的List

目录

ee.List

List.repeat()

List.sequence()

List中的get、set

List中的replace、replaceAll

List中的add、insert、reverse、swap

List中的sort

List 中的remove、removeAll

List中的equals、contains、containsAll

List.map()

List中的iterate

List中的size、length

 

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类似于js中的数组 

ee.List

print('ee.List([1, 2, 3, 4, 5]):',  ee.List([1, 2, 3, 4, 5]));
print('ee.List.sequence(1, 5):', ee.List.sequence(1, 5));
print('ee.List.sequence(1, 5).get(2):', ee.List.sequence(1, 5).get(2));

print('ee.List(["a","b","c","d"]):',  ee.List(["a","b","c","d"]));
print('ee.List(["a","b","c","d"]).get(2):',  ee.List(["a","b","c","d"]).get(2));

print('ee.List.sequence(1,  365,  16)',ee.List.sequence(1,  365,  16))

List.repeat()

List.sequence()

ee.List.sequenee.List.sequencece ( start , end,step , 等差数列由几个数字构成)

List中的get、set

print(ee.List([1992,23,45,"hello"]))
print(ee.List([1992,23,45,"hello"]).set(0,2000))
print(ee.List([1992,23,45,"hello"]).set(1,"hahahah"))
print(ee.List([1992,23,45,"hello"]).set(-1,"world"))

print(ee.List([1992,23,45,"hello"]).get(0))

List中的replace、replaceAll

print(ee.List([1992,23,"hello",1992]))
print("replace",ee.List([1992,23,"hello",1992]).replace(1992,2000))
print("replaceAll",ee.List([1992,235,"hello",1992]).replaceAll(1992,2000))

List中的add、insert、reverse、swap

print("add",ee.List([1992,23,"hello",1992]).add("lijiang"))
print("insert",ee.List([1992,23,"hello",1992]).insert(2,"sichuan"))
print("reverse",ee.List([1992,23,"hello",1992]).reverse())
print("swap",ee.List([1992,23,2,1992,56]).swap(1,4))

List中的sort

print(ee.List([1992,23,1,1992]).sort())
print(ee.List(["beijing","shanghai","sichuan","chongqing"]).sort())

List 中的remove、removeAll

print(ee.List([1992,23,"hello",1992]))
print(ee.List([1992,23,"hello",1992]).get(2))

print(ee.List([1992,23,"hello",1992]).remove("hello"))//移除操作不是用索引
print(ee.List([1992,23,"hello",1992]).removeAll([1992,"hello"]))

List中的equals、contains、containsAll

var list1=ee.List(["a","b","c","d"])
var list2=ee.List(["a","b","d","c"])
var list3=ee.List(["a","b","c"])

print(list1.equals(list2))
print(list1.contains("a"))
print(list1.contains(list3))
print(list1.containsAll(list3))

List.map()

var list1=ee.List(["a","b","c","d"])

function repeatName(name){
  return ee.List.repeat(name,3)
}

print("list1",list1)
print("list1.map(repeatName)",list1.map(repeatName))

List中的iterate

var list=ee.List([1,2,3,4,5])

function myAdd(num1,num2){
  return ee.Number(num1).add(num2)
}

print(list.iterate(myAdd,0))
print(list.iterate(myAdd,10))

List中的size、length

size()和.length()指令具有相同的效果