How to generate provincial data from county-level data in ArcGIS?

  stay ArcGIS It is often necessary to fuse maps in the process of use , For example, provincial panel data is generated from county-level administrative panel data . This article introduces the operation process in detail .

        Tools ：

        This operation passes ArcGIS in 【Dissolve】（ The fusion ） Tool implementation . notes ： Fusion tools are often used to merge multiple adjacent shapes in the same layer into a single shape , Merge with merging multiple layers （merge） Tools are different . When merging multiple drawings, the fusion tool , Must be based on one or more fields , The field values of these figures must be the same , That is, the merged drawings have the same attribute values . If the polygon participating in the merging has no adjacent , You will get many parts （Multipart） elements . In this example, you need to get the provincial data , By merging the county graphics of the same province , You can get .

        The experimental steps ：

       1. View layer attribute fields . open ArcMap Software , Load data “ County Administrative Region ”; Right click the layer to view the data attribute table ,ProvinceId The field indicates the province number to which the county graphic belongs , Therefore, this example sets the same province according to this field id County level merger , The operation interface is as follows .

       1） Load map data

       2） View map data properties

 

       2. County level data of financial contract province . Open open 【Data Management Tools】|【Generalization】|【Dissolve】 Tools , Input element set to “ County Administrative Region ”, The output feature class is set to “ Provincial administrative units ”, The fusion field is set to “ProvinceId”, Other parameters default . determine , Get the fused provincial and administrative region data , The operation interface is as follows .

       1） The fusion

       2) Output map