Initial Commit

app.py

@@ -0,0 +1,149 @@
+import time
+import shutil
+import uvicorn
+import gradio as gr
+from fastapi import FastAPI
+from data4co import TSPConcordeSolver, draw_tsp_problem, draw_tsp_solution
+
+
+TSP_DEFAULT_PATH = "static/tso_default.png"
+TSP_PROBLEM_PATH = "media/tsp_problem.png"
+TSP_SOLUTION_PATH = "media/tsp_solution.png"
+
+
+def _handle_tsp_solve(
+    file_path: str,
+    norm: str,
+):
+    if file_path is None:
+        raise gr.Error("Please upload a '.tsp' file!")
+    if norm == '':
+        norm = "EUC_2D"
+    if norm != "EUC_2D" and norm != "GEO":
+        raise gr.Error("Invaild edge_weight_type! Only support 'GEO' and 'EUC_2D'.")
+    solver = TSPConcordeSolver(scale=1)
+    solver.from_tsp(file_path, norm=norm)
+    start_time = time.time()
+    solver.solve()
+    solved_time = time.time() - start_time
+    tours = solver.tours
+    points = solver.points
+    draw_tsp_problem(
+        save_path=TSP_PROBLEM_PATH,
+        points=points,
+    )
+    draw_tsp_solution(
+        save_path=TSP_SOLUTION_PATH,
+        points=points,
+        tours=tours
+    )
+    message = "Successfully solve the TSP problem, using time ({:.3f}s).".format(solved_time)
+    
+    return message, TSP_PROBLEM_PATH, TSP_SOLUTION_PATH
+    
+
+def handle_tsp_solve(
+    file_path: str,
+    norm: str,
+):
+    try:
+        message = _handle_tsp_solve(file_path, norm)
+    except Exception as e:
+        message = str(e)
+    return message
+
+
+def handle_tsp_clear():
+    shutil.copy(
+        src=TSP_DEFAULT_PATH,
+        dst=TSP_PROBLEM_PATH
+    )
+    shutil.copy(
+        src=TSP_DEFAULT_PATH,
+        dst=TSP_SOLUTION_PATH
+    )
+    message = "successfully clear the files!"
+    return message, TSP_PROBLEM_PATH, TSP_SOLUTION_PATH
+
+
+def convert_image_path_to_bytes(image_path):
+    with open(image_path, "rb") as f:
+        image_bytes = f.read()
+    return image_bytes
+
+
+with gr.Blocks() as tsp_page:
+
+    gr.Markdown(
+        '''
+        This space displays the solution to the TSP problem.
+
+        ## How to use this Space?
+        - Upload a '.tsp' file from tsplib .
+        - The images of the TSP problem and solution will be shown after you click the solve button.
+        - Click the 'clear' button to clear all the files.
+        '''
+    )
+
+    with gr.Row(variant="panel"):
+        with gr.Column(scale=7):
+            with gr.Row():
+                tsp_file = gr.File(
+                    file_types=[".tsp"],
+                    scale=3
+                )
+                info = gr.Textbox(
+                    value="",
+                    label="Log",
+                    scale=4,
+                )
+            norm = gr.Textbox(
+                label="Please input the edge_weight_type of the TSP file",
+            )
+        with gr.Column(scale=4):
+            tsp_problem_img = gr.Image(
+                value="media/tsp_problem.png", 
+                type="filepath", 
+                label="TSP Problem", 
+            )
+        with gr.Column(scale=4):
+            tsp_solution_img = gr.Image(
+                value="media/tsp_solution.png", 
+                type="filepath", 
+                label="TSP Solution", 
+            )
+    with gr.Row():
+        with gr.Column(scale=1, min_width=100):
+            solve_button = gr.Button(
+                value="Solve", 
+                variant="primary", 
+                scale=1
+            )
+        with gr.Column(scale=1, min_width=100):
+            clear_button = gr.Button(
+                "Clear", 
+                variant="secondary", 
+                scale=1
+            )
+        with gr.Column(scale=8):
+            pass         
+    
+    solve_button.click(
+        handle_tsp_solve,
+        [tsp_file, norm],
+        outputs=[info, tsp_problem_img, tsp_solution_img]
+    )
+    
+    clear_button.click(
+        handle_tsp_clear,
+        inputs=None,
+        outputs=[info, tsp_problem_img, tsp_solution_img]
+    )
+
+
+app = FastAPI()
+app = gr.mount_gradio_app(app, tsp_page, path="/")
+
+
+if __name__ == "__main__":
+    uvicorn.run(app, host="0.0.0.0", port=7860)

example/a280.tsp

@@ -0,0 +1,287 @@
+NAME : a280
+COMMENT : drilling problem (Ludwig)
+TYPE : TSP
+DIMENSION: 280
+EDGE_WEIGHT_TYPE : EUC_2D
+NODE_COORD_SECTION
+  1 288 149
+  2 288 129
+  3 270 133
+  4 256 141
+  5 256 157
+  6 246 157
+  7 236 169
+  8 228 169
+  9 228 161
+ 10 220 169
+ 11 212 169
+ 12 204 169
+ 13 196 169
+ 14 188 169
+ 15 196 161
+ 16 188 145
+ 17 172 145
+ 18 164 145
+ 19 156 145
+ 20 148 145
+ 21 140 145
+ 22 148 169
+ 23 164 169
+ 24 172 169
+ 25 156 169
+ 26 140 169
+ 27 132 169
+ 28 124 169
+ 29 116 161
+ 30 104 153
+ 31 104 161
+ 32 104 169
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+279 260 129
+280 280 133
+EOF

example/att48.tsp

@@ -0,0 +1,55 @@
+NAME : att48
+COMMENT : 48 capitals of the US (Padberg/Rinaldi)
+TYPE : TSP
+DIMENSION : 48
+EDGE_WEIGHT_TYPE : ATT
+NODE_COORD_SECTION
+1 6734 1453
+2 2233 10
+3 5530 1424
+4 401 841
+5 3082 1644
+6 7608 4458
+7 7573 3716
+8 7265 1268
+9 6898 1885
+10 1112 2049
+11 5468 2606
+12 5989 2873
+13 4706 2674
+14 4612 2035
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+16 6107 669
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+23 5199 2182
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+33 6426 3173
+34 4608 1198
+35 23 2216
+36 7248 3779
+37 7762 4595
+38 7392 2244
+39 3484 2829
+40 6271 2135
+41 4985 140
+42 1916 1569
+43 7280 4899
+44 7509 3239
+45 10 2676
+46 6807 2993
+47 5185 3258
+48 3023 1942
+EOF

example/berlin52.tsp

@@ -0,0 +1,60 @@
+NAME: berlin52
+TYPE: TSP
+COMMENT: 52 locations in Berlin (Groetschel)
+DIMENSION: 52
+EDGE_WEIGHT_TYPE: EUC_2D
+NODE_COORD_SECTION
+1 565.0 575.0
+2 25.0 185.0
+3 345.0 750.0
+4 945.0 685.0
+5 845.0 655.0
+6 880.0 660.0
+7 25.0 230.0
+8 525.0 1000.0
+9 580.0 1175.0
+10 650.0 1130.0
+11 1605.0 620.0 
+12 1220.0 580.0
+13 1465.0 200.0
+14 1530.0 5.0
+15 845.0 680.0
+16 725.0 370.0
+17 145.0 665.0
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+20 560.0 365.0
+21 300.0 465.0
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+27 1320.0 315.0
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+30 410.0 250.0
+31 420.0 555.0
+32 575.0 665.0
+33 1150.0 1160.0
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+36 685.0 610.0
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+49 605.0 625.0
+50 595.0 360.0
+51 1340.0 725.0
+52 1740.0 245.0
+EOF
+

example/ch130.tsp

@@ -0,0 +1,137 @@
+NAME: ch130
+TYPE: TSP
+COMMENT: 130 city problem (Churritz)
+DIMENSION: 130
+EDGE_WEIGHT_TYPE: EUC_2D
+NODE_COORD_SECTION
+1 334.5909245845 161.7809319139
+2 397.6446634067 262.8165330708
+3 503.8741827107 172.8741151168
+4 444.0479403502 384.6491809647
+5 311.6137146746 2.0091699828
+6 662.8551011379 549.2301263653
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+EOF

example/ch150.tsp

@@ -0,0 +1,157 @@
+NAME: ch150
+TYPE: TSP
+COMMENT: 150 city Problem (churritz)
+DIMENSION: 150
+EDGE_WEIGHT_TYPE: EUC_2D
+NODE_COORD_SECTION
+1 37.4393516691 541.2090699418
+2 612.1759508571 494.3166877396
+3 38.1312338227 353.1484581781
+4 53.4418081065 131.4849013650
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+EOF

requirements.txt

@@ -0,0 +1,3 @@
+gradio
+data4co
+matplotlib