OttoYu commited on
Commit
63336c7
1 Parent(s): a7c0322

Delete app.py

Browse files
Files changed (1) hide show
  1. app.py +0 -64
app.py DELETED
@@ -1,64 +0,0 @@
1
- import streamlit as st
2
- import numpy as np
3
- import laspy
4
- from sklearn.cluster import DBSCAN
5
- from sklearn.metrics import accuracy_score
6
- from scipy.spatial import ConvexHull
7
- from skimage.measure import profile_line
8
-
9
- st.title("Tree Analysis App")
10
-
11
- # Upload LAS file
12
- uploaded_file = st.file_uploader("Upload a LAS file", type=["las", "laz"])
13
-
14
- if uploaded_file is not None:
15
- # Load the LAS file
16
- las_file = laspy.read(uploaded_file)
17
- height_filter = np.logical_and(las_file.z > 1, las_file.z < 30)
18
- las_file = las_file[height_filter]
19
- # Extract the x and y coordinates from the LAS file
20
- x = las_file.x
21
- y = las_file.y
22
-
23
- # Combine the x and y coordinates into a feature matrix
24
- feature_matrix = np.column_stack((x, y))
25
-
26
- # Segment the trees using DBSCAN clustering with a specified distance threshold (e.g., 2 meters)
27
- tree_labels = DBSCAN(eps=2, min_samples=10).fit_predict(feature_matrix)
28
-
29
- # Count the number of trees
30
- num_trees = len(set(tree_labels)) - (1 if -1 in tree_labels else 0)
31
- st.write(f"Number of trees: {num_trees}")
32
- for i in range(num_trees):
33
- indices = np.where(tree_labels == i)[0]
34
-
35
- tree_x = x[indices]
36
- tree_y = y[indices]
37
-
38
- tree_mid_x = np.mean(tree_x)
39
- tree_mid_y = np.mean(tree_y)
40
-
41
- st.write(f"Tree {i+1} middle point: ({tree_mid_x:.3f}, {tree_mid_y:.3f})")
42
-
43
- def calculate_tree_data(points):
44
- height = np.max(points.z) - np.min(points.z)
45
- xy_points = np.column_stack((points.X, points.Y))
46
- hull = ConvexHull(xy_points)
47
- crown_spread = np.sqrt(hull.area / np.pi)/10
48
- z_trunk = np.percentile(points.z, 20) # assume trunk is the lowest 20% of the points
49
- trunk_points = points[points.z < z_trunk]
50
- dbh = 2 * np.mean(np.sqrt((trunk_points.X - np.mean(trunk_points.X)) ** 2 + (trunk_points.Y - np.mean(trunk_points.Y)) ** 2))
51
- return height, crown_spread, dbh
52
-
53
- tree_data = []
54
- for tree_label in range(num_trees):
55
- # Extract points for the current tree
56
- tree_points = las_file.points[tree_labels == tree_label]
57
- # Calculate tree data
58
- data = calculate_tree_data(tree_points)
59
- # Append data to list
60
- tree_data.append(data)
61
-
62
- # Print the data for each tree
63
- for i, data in enumerate(tree_data):
64
- st.write(f"Tree {i + 1} - Height: {data[0]:.3f} m, Crown Spread: {data[1]:.3f} m, DBH: {data[2]:.3f} mm")