Javascript 从Geojson数组中删除旧版本

我有一个大型geojson文件，具有以下一般结构：

{
“特点”：[{
“几何学”：{
“坐标”：[
[
[-12.345, 26.006],
[-78.56, 24.944],
[-76.44, 24.99],
[-76.456, 26.567],
[-78.345, 26.23456]
]
],
“类型”：“多边形”
},
“身份证”：“某些身份证”，
“财产”：{
“参数”：“标高”
},
“类型”：“特征”
},
{
“几何学”：{
“坐标”：[
[
[139.345, 39.2345],
[139.23456, 37.3465],
[141.678, 37.7896],
[141.2345, 39.6543],
[139.7856, 39.2345]
]
],
“类型”：“多边形”
},
“id”：“Some_OtherID_01”，
“财产”：{
“参数”：“标高”
},
“类型”：“特征”
}, {
“几何学”：{
“坐标”：[
[
[143.8796, -30.243],
[143.456, -32.764],
[145.3452, -32.76],
[145.134, -30.87],
[143.123, -30.765]
]
],
“类型”：“多边形”
},
“id”：“某些id”，
“财产”：{
“参数”：“标高”
},
“类型”：“特征”
}
],
“类型”：“功能集合”
}

我选择了使用python，因为我在python语言方面比较强。我将在下面发布我的代码以供参考，但您也可以找到我的另一篇文章，其中详细介绍了我在使用列表从字典中删除键时遇到的问题

import json

json_file = open('features.json')
json_str = json_file.read()
json_data = json.loads(json_str)

dictionaryOfJsonId = {}
removalCounter = 0
keyToRemove = []
valueToRemoveFromList = []
IDList = []

for values in json_data['features']:    #This loop converts the values in the json parse into a dict of only ID
    stringToSplit = values["id"]        #the id values from the json file
    IDList.append(stringToSplit)        #list with all the ID
    newKey = stringToSplit[:-2]         #takes the initial substring up to the last 2 spaces (version)
    newValue = stringToSplit[-2:]       #grabs the last two characters of the string

    if newKey in dictionaryOfJsonId:
        dictionaryOfJsonId[newKey].append(newValue)
    else:
        dictionaryOfJsonId[newKey] = [newValue]


for key in dictionaryOfJsonId:          #Remove entries that do not have duplicates
    if len(dictionaryOfJsonId[key])<2:
        valueToRemoveFromList.append(str(key + dictionaryOfJsonId[key][0]))
    else:
        valueToRemoveFromList.append(str(key +max(dictionaryOfJsonId[key])))


for string in valueToRemoveFromList:    #Remove all values that don't have duplicates from the List of ID
    IDList.remove(string)
    removalCounter+=1


good_features = [i for i in json_data['features'] if i['id'] not in IDList] #Loops through the original and 
                                                                            #removes keys on list from original JSON


with open('features.geojson','w') as outfile:   #create JSON file from list
    json.dump(good_features,outfile)



print "Removed",len(json_data['features'])-removalCounter, "entries from JSON" 

导入json
json_file=open（'features.json'）
json_str=json_file.read（）
json_data=json.loads（json_str）
dictionaryOfJsonId={}
移除计数器=0
keyToRemove=[]
valueToRemoveFromList=[]
IDList=[]
对于json_数据['features']中的值：#此循环将json解析中的值转换为仅包含ID的dict
stringToSplit=values[“id”]#json文件中的id值
IDList.append（stringToSplit）#列出所有ID
newKey=stringToSplit[：-2]#将初始子字符串保留到最后2个空格（版本）
newValue=stringToSplit[-2:]#获取字符串的最后两个字符
如果字典中的newKey为yofjsonid：
dictionaryOfJsonId[newKey].append（newValue）
其他：
dictionaryOfJsonId[newKey]=[newValue]
对于输入字典yOfJSONID:#删除没有重复项的条目
if len（字典yofjsonid[key]）