Spatial Join ArcMap ArcGIS скачать в хорошем качестве

Spatial Join ArcMap ArcGIS

This video is about spatial join tool in ArcGIS. #spatialjoin, #targetfeatures, #joinfeatures, #outputfeatureclass, #joinoperation, #joinonetoone, #joinonetomany Spatial join - joins attributes from one feature to another based on the spatial relationship. The target features and the joined attributes from the join features are written to the output feature class. View spatial relationship examples Usage A spatial join matches rows from the Join Features values to the Target Features values based on their relative spatial locations. By default, all attributes of the join features are appended to attributes of the target features and copied to the output feature class. You can define which attributes will be written to the output by manipulating them in the Field Map of Join Features parameter. Two new fields, Join_Count and TARGET_FID, will be added to the output feature class. The Join_Count field indicates the number of join features that match each target feature (TARGET_FID). Another new field, JOIN_FID, will be added to the output when Join one to many is specified for the Join Operation parameter. When the Join Operation parameter is set to Join one to many, there can be more than one row in the output feature class for each target feature. Use the JOIN_FID field to determine which feature is joined to which target feature (TARGET_FID). A value of -1 for the JOIN_FID field means no feature meets the specified spatial relationship with the target feature. All input target features will be written to the output feature class if both of the following apply: Join Operation is set to Join one to one. Keep All Target Features is checked. To manage the fields in the output dataset and the contents of those fields, use the Field Map parameter. To change the field order, select a field name and drag it to the new position. The default data type of an output field is the same as the data type of the first input field (of that name) it encounters. You can manually change the data type at any time to any other valid data type. The available merge rules are first, last, join, sum, mean, median, mode, minimum, maximum, standard deviation, and count. When using the Join merge rule, you can specify a delimiter such as a space, comma, period, dash, and so on. To use a space, ensure that the pointer is at the start of the input box and press the Spacebar once. You can specify the start and end positions of text fields using the format option. Do not perform standard deviation on a single input because values cannot be divided by zero, so standard deviation is not a valid option for single inputs. Learn more about mapping fields in scripts Merge rules specified in the Field Map of Join Features parameter only apply to attributes from the join features and when more than one feature is matched to a target feature (when Join_Count is bigger than 1). For example, if three features with DEPTH attribute values of 15.5, 2.5, and 3.3 are joined, and a merge rule of Mean is applied, the output field will have a value of 6.1. Null values in join fields are ignored for statistic calculation. For example, 15.5, null, and 2.5 will result in 9.0 for Mean and 2 for Count. When the Match Option parameter is set to Closest or Closest geodesic, two or more join features may be the same distance from the target feature. When this occurs, one of the join features will be randomly selected as the matching feature (the join feature's Object ID does not influence this random selection). To find the second, third, or nth closest feature, use the Generate Near Table tool. Learn more about how proximity is calculated If a join feature has a spatial relationship with multiple target features, it will be counted as many times as it is matched with the target feature. For example, if a point is within three polygons, the point will be counted three times, once for each polygon. For more information about using the Intersect 3D and Within a distance 3D spatial relationships, see Select By Location: 3D relationships.