1. Experiment name
overlay analysis
2. The purpose of the experiment
Through this experiment, master the basic method of overlay analysis of spatial data layers.
3. Experimental content and requirements
Experiment content:
A simulation of a project in reality. This task requires site selection for a new university aquatics laboratory, and the following criteria are used in site selection:
- The land use state tends towards shrub land (shown as LUCODE = 300 in landuse.shp).
- The selected address is within 300 meters of a sewer.
- The soil type is suitable for growth (shown as SUIT >= 2 in soils.shp).
Experimental requirements:
1. Use the provided vector spatial data such as landuse.shp, soils.shp, sewers.shp, etc., and use ARCGIS overlay analysis and related spatial analysis tools to solve practical geographical problems with comprehensive spatial analysis methods.
2. It is required to use ARCGIS software and related tools to superimpose the spatial data, and to perform simple calculation and statistics on the results.
3. Answer the following questions based on the results of the experiment:
How many plots meet the site selection criteria for the aquatic laboratory? What is the total area?
4. Experimental steps
(Describe each step in detail, and use screenshots where necessary)
1. Open ARCMAP to load landuse.shp, soils.shp, sewers.shp data, and adjust the data display effect;
2. Query by attribute, select the query layer landuse, and the query statement is LUCODE = 300);
3. Generate a new layer from the query results: landuse selection;
4. Search by attribute, select the query layer as soils, and the query statement is: SUIT >= 2), click OK to complete the query of the second condition, and generate a new layer soils selection from the query results;
5. Open ArcToolbox, select analysis tools, overlay analysis, intersect, select the input element landuse selection, soils selection for overlay, and generate a new layer soils_Intersect;
6. Open the buffer wizard tool, select the layer sewers, click Next, select as a multi-buffer ring, set the number of rings to 1, set the distance between the rings to 300 meters, and click Next;
7. Select the barrier between the fusion buffer and click Finish;
8. Open ArcToolbox, select Analysis Tools, Overlay Analysis, Intersect, select input element buffer_sewers, soils_Intersect to overlay, and click OK.
9. The red area in the picture is the plot that meets the site selection conditions for the aquatic laboratory;
10. There are a total of 13 plots that meet the site selection criteria for the aquatic laboratory, with a total area of 48396.360719㎡.
