Spatial analysis of activity structure of Qazvin metropolitan area

Metropolises are emerging phenomena that affect a wide range of surrounding space. This effect over time leads to the expansion of the metropolitan area. The current research has been compiled with a general descriptive-analytical approach and using available documentary data and statistical data. Excel and Spss statistical software and ArcGis spatial processing and description software were used in database preparation and data analysis, and ANN nearest neighbor index was used to determine the activity distribution pattern, and Moran's Spatial Autocorrelation Model was used to check the distribution rate. Is. Based on the results of the research and investigations of the Qazvin metropolitan area in terms of activity, it can be said that the Qazvin metropolitan area has a dominant linear structure with a trend and development towards the formation of a radial-annular structure in its southern half. Also, the spatial structure of the metropolitan area of Qazvin has been made in connection with the expansion of relations and economic connections with cities and rural areas, especially in the southern part of the area.