Update README.md

README.md

@@ -8,11 +8,81 @@ tags:
 - trajectory analysis
 size_categories:
 - 1M<n<10M
+dataset_info:
+  features:
+    trajectory:
+      - name: time
+        dtype: timestamp[s]
+        description: "Timestamp in ISO 8601 format"
+      - name: latitude
+        dtype: float64
+        description: "Latitude coordinates under WGS84 standard"
+      - name: longitude
+        dtype: float64
+        description: "Longitude coordinates under WGS84 standard"
+      - name: altitude
+        dtype: float64
+        description: "Altitude of trajectory points (optional)"
+      - name: osm_way_id
+        dtype: string
+        description: "Way ID in OpenStreetMap"
+      - name: matched_latitude
+        dtype: float64
+        description: "Matched latitude coordinates"
+      - name: matched_longitude
+        dtype: float64
+        description: "Matched longitude coordinates"
+      - name: matched_distance
+        dtype: float64
+        description: "Distance between trajectory point and matched coordinates"
+      - name: matched_type
+        dtype: string
+        description: "Type of matched coordinates"
+    meta:
+      - name: filename
+        dtype: string
+        description: "Original trajectory file name"
+      - name: uploaded
+        dtype: timestamp[s]
+        description: "Upload time of trajectory file"
+      - name: points
+        dtype: int64
+        description: "Number of data points in trajectory file"
+      - name: start_coordinate
+        dtype: string
+        description: "Starting coordinates of trajectory (longitude, latitude)"
+      - name: end_coordinate
+        dtype: string
+        description: "Ending coordinates of trajectory (longitude, latitude)"
+      - name: owner
+        dtype: string
+        description: "Uploader of trajectory data"
+      - name: description
+        dtype: string
+        description: "Description information of trajectory"
+      - name: tags
+        dtype: string
+        description: "Tags related to trajectory"
+      - name: visibility
+        dtype: string
+        description: "Visibility description of trajectory"
+      - name: distance
+        dtype: float64
+        description: "Total distance of trajectory"
+      - name: time
+        dtype: string
+        description: "Total duration of trajectory"
+      - name: geometry
+        dtype: string
+        description: "Geometric representation of trajectory, typically an array of [longitude, latitude]"
+  splits:
+    - name: sample
+      num_examples: 2
 configs:
 - config_name: default
   data_files:
-    - "trajectory_sample.csv"
     - "meta_sample.json"
+    - "trajectory_sample.csv"
 viewer: true
 ---