Question

所以我正在尝试学习绘制Choropleth贴图。我使用了一个样本数据集，但结果为空。请您看一下并告诉我有什么问题，因为我对语法进行了交叉检查并且不理解为什么它不显示我的数据。我包括了数据集标题和我编写的代码，如下所示：

if(isset($_FILES["files"])) {
      $name = $_FILES["files"]["name"][0];
      $tmp = $_FILES["files"]["tmp_name"][0];

      $path = "";

      do { $newName = str_replace(".uexp", "", $name) . "-" . generateRandomString(); $path = "../filestore/$newName.uexp"; } while(file_exists($path));

      move_uploaded_file($tmp, $path);

      $str = file_get_contents($path);
      $byteArray = unpack("C*", $str);

      $_SESSION["Name"] = $name;
      $_SESSION["Path"] = $path;
      $_SESSION["File"] = serialize($byteArray);
  }

Answer 1

您需要提供STATE缩写（DC，AL，...）而不是Names。我遇到了同样的问题。更改它后，它起作用了。您可以使用以下代码将名称转换为缩写

def convert_state_name(name):
    cd=str(name)
    us_state_abbrev = {
    "Alabama":"AL"
    "Alaska":"AK"
    "Arizona":"AZ"
    "Arkansas":"AR"
    "California":"CA"
    "Colorado":"CO"
    "Connecticut":"CT"
    "Delaware":"DE"
    "Washington DC":"DC"
    "Florida":"FL"
    "Georgia":"GA"
    "Hawaii":"HI"
    "Idaho":"ID"
    "Illinois":"IL"
    "Indiana":"IN"
    "Iowa":"IA"
    "Kansas":"KS"
    "Kentucky":"KY"
    "Louisiana":"LA"
    "Maine":"ME"
    "Maryland":"MD"
    "Massachusetts":"MA"
    "Michigan":"MI"
    "Minnesota":"MN"
    "Mississippi":"MS"
    "Missouri":"MO"
    "Montana":"MT"
    "Nebraska":"NE"
    "Nevada":"NV"
    "New Hampshire":"NH"
    "New Jersey":"NJ"
    "New Mexico":"NM"
    "New York":"NY"
    "North Carolina":"NC"
    "North Dakota":"ND"
    "Ohio":"OH"
    "Oklahoma":"OK"
    "Oregon":"OR"
    "Pennsylvania":"PA"
    "Rhode Island":"RI"
    "South Carolina":"SC"
    "South Dakota":"SD"
    "Tennessee":"TN"
    "Texas":"TX"
    "Utah":"UT"
    "Vermont":"VT"
    "Virginia":"VA"
    "Washington":"WA"
    "West Virginia":"WV"
    "Wisconsin":"WI"
    "Wyoming":"WY"
    return us_state_abbrev[cd]

df['STATE_CD'] = df.Names.apply(lambda x:convert_state_name(x))

最后，您可以将locations = df ['Names']替换为locations = df ['STATE_CD']

希望这会有所帮助。

为什么我在python中的Choropleth映射为空？

1 个答案: