# Research on Automatic Generation of Park Road Network Based on Skeleton Algorithm
## 5 Practical Site Application
### Evaluation of Results
#### 5.3.1 Analysis of the Evaluation Parameters  
The integration degree (Figure 9b) indicates the proximity of road links. Warmer roads are more convenient and accessible to local areas within the system. The maximum global integration value is 0.62, while the minimum is 0.35. The road with the highest integration degree is located in the southern area of the park near the water texture, which aligns with the centroid area of the park outline. This centroid area contains water textures and vegetation clusters, forming the core area of the entire park along with a dense road network. In terms of local integration degree (Figure 10), all waterfront spaces in the northwest and  
Figure 9: Road network generated in Houxianghe Park (**a**) and evaluation (**b–f**). (**a**) Generated road network; (**b**) integration value; (**c**) connection value; (**d**) control value; (**e**) depth value; (**f**) choice value.  
southeast directions of the park are depicted in red, indicating strong traffic potential. As we move outward from this core area, there is a gradual decrease in road integration degree. It can be observed that under this road system, space gradually converges from both outside and inside; furthermore, it becomes easier to gather people as space centrality strengthens. The connection values indicate the permeability of roads, with warmer colors signifying higher permeability. The north and west sides of the park, which are connected to the outside world, exhibit greater permeability compared to other boundaries, fostering a stronger sense of accessibility and attracting pedestrians from the Wuhan Museum and Hankou Railway Station to the park's interior.  
The connectivity value (Figure 9c) represents the permeability capacity of the road. The warmer-colored areas around the road indicate higher permeability. A well-connected and safe road network can encourage residents to utilize the park [50]. In terms of connectivity, the values for the north and west borders of the park are 5 and 6, respectively, which exceed the average value of 2.85. Compared to other boundaries, the park is more accessible and open to the outside world, making it more attractive for pedestrians from Wuhan Museum and Hankou Station to visit.  
The control value (Figure 9d) indicates the road's ability to control other roads. A warmer color signifies a stronger control ability over adjacent roads. The figure shows that there are more warm-colored roads than cool-colored ones, suggesting a higher overall road control value in the park. It also indicates strong interaction and directivity between the roads and adjacent roads. Unlike the integration degree, the roads with strong control are mainly situated on the periphery of the park and connect with the main roads outside the park.  
The depth value (Figure 9e) indicates the depth of the road. The darker the road, the warmer it is, and the less accessible it becomes. Areas with larger depth values are primarily concentrated on roads near Wuhan Museum and Wuhan Municipal Design Institute in the north of the park. Additionally, areas adjacent to buildings in road planning tend to have larger depth values.  
Choice degree (Figure 9f) indicates the frequency of road usage. The warmer colors represent higher usage frequency, with the park road network showing an increase in selection degree from the outer to the inner areas. The annular roads surrounding the water body appear in warmer colors compared to other roads, indicating a higher frequency of use within the entire road network system and a greater likelihood of pedestrian crossing. This suggests that roads along water bodies are more attractive to pedestrians [51].