How to read the properties information of kml data

Question

주영 2024-9-11，7:04

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2151905-how-to-read-the-properties-information-of-kml-data

回答： Shivam 2024-9-11，9:07

I got geographical information using 'readgeotable',

but I want to bring properties information of actual kml data.

In more detail, I would like to bring each field within the kml data and the property information corresponding to the field.

Is there any way?

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Shivam 2024-9-11，9:07

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2151905-how-to-read-the-properties-information-of-kml-data#answer_1514690

在 MATLAB Online 中打开

sampleKMLData.txt

Hi @주영,

Using readgeotable for the kml data, gives a nxm table where n corresponds to no. of 'Placemark' inside the kml document. In the below mentioned workaround, I have used a sample data with 2 Placemarks, plotted it using wmmarker function and and illustrated how to extract individual field values.

>> T = readgeotable('path/to/kmlfile.kml');
>> wmmarker(T); % Plot the source locations on a web map.
>> T
T =
  2×3 table
             Shape                 Name                 Description          
    _______________________    ____________    ______________________________
    (37.4223°N, 122.0822°W)    "Location 1"    "This is the first location." 
    (37.4220°N, 122.0850°W)    "Location 2"    "This is the second location."
    
    
>> fieldNames = T.Properties.VariableNames; % Get the keys (field names) of the table
fieldNames =
  1×3 cell array
    {'Shape'}    {'Name'}    {'Description'}

Here's how you can extract column corresponding to 'Shape' fieldName and also extract value of first row:

% Extract the 'Shape' column
shapeColumn = T.Shape;
% Access the first row of the 'Shape' column
firstShape = T.Shape(1);

Also note that I am providing the sample data in a .txt file because this community platform does not support attaching .kml files directly. You can copy the data from the .txt file into a .kml file on your system to test the workaround.

I hope it helps.