Calculation of plot ratio by ArcGIS

Calculating the plot ratio generally requires calculating the area of the plot number and the area of all buildings in each plot number , Construction area of / The plot area is the plot ratio obtained .

Use the calculation geometry tool to complete the calculation of the base area .

Base area * The layer number = Construction area of

1： Add two fields ： Figure base area and building area , Attributes are in text form .
2： Use computational geometry to obtain the base area .
3： Use the field calculator to get the building area of the house , The building area is obtained by multiplying the base area by the number of floors .

1： Use parcel number as the field for spatial connection , And summarize the total area of plot number by category .
2： Plot number .
3： Select the total area （sum）, We get the total building area of houses in each plot , Then it is used to calculate the plot ratio .
4： The output path .

We will use the parcel number in the cadastral boundary data as a public field , To calculate the plot ratio .

1： Find the cadastral boundary , Right click , Connection and association , Select connection .
2： Attributes of a table .
3： Plot number .
4： Table with house area ( If the table format is incorrect , The connection may fail ).
5： Plot number .

Use computational geometry to calculate the parcel area .

1： Add two fields , Plot area （ The parcel area is calculated using computational geometry ） And plot ratio .
2： Calculate plot area .
3： Calculate plot ratio ： It is obtained by removing the area of the plot from the total area of the building .
All in all , Using the total building area in a plot to remove the plot area is the plot ratio of the plot .