ArcGIS urban living area land suitability evaluation (I)

To make suitability evaluation, we first need to determine the evaluation factors and their weights （ It is best to refer to the results of relevant papers for the selection of indicators and weights ）：
Traffic convenience ：0.28
Waterfront environment ：0.09
Stay away from industrial areas ：0.06
Forest environment ：0.07
Urban atmosphere ：0.18
Altitude ：0.155
slope ：0.155
Here we believe that the weight of transportation convenience is the largest , Followed by elevation and slope , It is considered that the weight ratio of forest environment is the smallest .

General steps ：（1） Evaluate the suitability of each single factor , Divide into 1~5 level （ It can also be divided into 10 level , Look at your own needs ）, Convert to grid data .
（2） Carry out weighted superposition operation on grid data , The parcel represented by each grid will get a comprehensive value .
（3） Grading the comprehensive grid data , Get the suitability evaluation map （ Thematic map ）.

1、 Traffic convenience （ It is believed here that the closer to the road , The higher the level , The more convenient , Suitable for human habitation ）： The number of levels should also be set according to the needs , It is best to refer to relevant research results .
From the provincial highway 0-500& Distance from County Road 0-250（5 level ）
500-1000&250-500（4 level ）
1000-1500&500-1000（3 level ）
1500-3000&1000-2000（2 level ）
3000-&2000-（1 level ）
1： Right click the road data , Open the property sheet .
2： Select by attribute , A choice for a class , You can see that all the data of the dart are selected .
1： Select the type attribute .
2： choice “=”.
3： choice “ Provincial highway ”.
4： Confirmation formula , You can select all the dart elements .

1： Analysis tools , If you don't have this tool in your toolbox , stay gis Right click in the blank space of the , And check the analysis tool , Activate and use .
2： Neighborhood analysis tool .
3： Multi ring buffer , You can also choose other tools , Select the corresponding tools according to the specific needs .
4： Select road features , Here is the provincial highway data .
5： Output address and name （ Be sure to distinguish ）.
6： Add this 5 Distance （ Because I divided 5 level ）.

1： The unit is meter .
2： Field name selection ： Distance from provincial highway , If the field fails to set Chinese , Use English letters to indicate , such as road_distance.
3： choice All.
4： determine .

The generated results are shown in Figure , It can be found that this is a comparison “ smooth ” The scope of the area , The closer to the center, the higher the level , The darker the color .

Similarly, calculate the buffer area of county road , Same operation （ Refer to the above operation ）.

The results are shown in the figure above .

Add a new field , Deposit distance, Used to distinguish between the two .