SearchCursor method |
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Release 9.3
Last modified January 19, 2010 |
Print all topics in : "Properties and Methods" |
Note:
This topic was updated for 9.3.1.
Establishes a cursor for searching through field rows. A search cursor can be used to retrieve rows. This method returns an enumeration object that will, in turn, hand out row objects.
Part | Description |
object | The instantiated geoprocessor object. |
InputValue | The table, feature class, or shapefile containing rows to be searched. |
WhereClause | Optional. An expression that limits the number of rows to be searched. For further information on WHERE clauses and Structured Query Language (SQL) statements, see About building an SQL statement. |
SpatialReference | Optional. The spatial reference of the input table, feature class, or shapefile. |
FieldList | Optional. Fields to be included in the cursor. By default, all fields are used. |
SortFields | Optional. Fields used to sort the rows. Ascending and descending order for each field is denoted by A and D. |
import arcgisscripting gp = arcgisscripting.create(9.3) # Open a searchcursor # Input: c:/us/counties.shp # FieldList: NAME; STATE_NAME; POP2000 # SortFields: STATE_NAME A; POP2000 D # rows = gp.searchcursor("c:/us/counties.shp","","","NAME; STATE_NAME; POP2000", "STATE_NAME A; POP2000 D") # Get the first feature in the searchcursor # row = rows.next() currentstate = "" # Iterate through the rows in the cursor # while row: if currentstate != row.STATE_NAME: currentstate = row.STATE_NAME # Print out the state name, county, and population # print "State: %s, County: %s, population: %i" % (row.STATE_NAME, row.NAME, row.POP2000) row = rows.next()