arcpy.SelectLayerByAttribute_management(lyr, "NEW_SELECTION", query) arcpy.SelectLayerByAttribute_management(lyr, "SUBSET_SELECTION", query1) arcpy.SelectLayerByAttribute_management(lyr, "SUBSET_SELECTION", query2)
Is it possible to have two subset selections in a tool. As in...arcpy.SelectLayerByAttribute_management(lyr, "NEW_SELECTION", query) arcpy.SelectLayerByAttribute_management(lyr, "SUBSET_SELECTION", query1) arcpy.SelectLayerByAttribute_management(lyr, "SUBSET_SELECTION", query2)
Thanks in advance...
Yes, I have done this before. The final selection will be only those attributes that are in common after all 3 queries.
import arcpy def main(): arcpy.AddMessage("Starting") # Get and set variables sub = arcpy.GetParameterAsText(0) unit = arcpy.GetParameterAsText(1) blk = arcpy.GetParameterAsText(2) layer_name = "tax_acct" df_name = "Layers" arcpy.AddMessage(sub) arcpy.AddMessage(unit) arcpy.AddMessage(blk) # Define mxd, df and lyr objects mxd = arcpy.mapping.MapDocument("CURRENT") df = arcpy.mapping.ListDataFrames(mxd, df_name)[0] lyr = arcpy.mapping.ListLayers(mxd, layer_name, df)[0] arcpy.AddMessage(lyr.name) # Create where clause for selection query = "SUBDIVISIO = '%s'" % (sub) query1 = "UNIT_NUMBE = '%s'" % (unit) query2 = "BLK_NUM = '%s'" % (blk) arcpy.AddMessage(query) arcpy.AddMessage(query1) arcpy.AddMessage(query2) try: arcpy.SelectLayerByAttribute_management(lyr, "NEW_SELECTION", query) arcpy.SelectLayerByAttribute_management(lyr, "SUBSET_SELECTION", query1) arcpy.SelectLayerByAttribute_management(lyr, "SUBSET_SELECTION", query2) except Exception as e: print e.message # If using this code within a script tool, AddError can be used to return messages # back to a script tool. If not, AddError will have no effect. arcpy.AddError(e.message) # Get number of selected features selection = int(arcpy.GetCount_management(layer_name).getOutput(0)) arcpy.AddMessage("%s features selected" % (selection)) # Set df extent to layer selection df.extent = lyr.getSelectedExtent() arcpy.RefreshActiveView() arcpy.AddMessage("Completed") main()
query = "SUBDIVISIO = '%s'" % (sub) query1 = "UNIT_NUMBE = '%s'" % (unit) query2 = "BLK_NUM = '%s'" % (blk) arcpy.SelectLayerByAttribute_management(lyr, "NEW_SELECTION", query + " AND " + query1 + " AND " + query2)
arcpy.MakeFeatureLayer_management(lyr, "new_layer", query + " AND " + query1 + " AND " + query2)
Wouldn't it be more efficient to just do:query = "SUBDIVISIO = '%s'" % (sub) query1 = "UNIT_NUMBE = '%s'" % (unit) query2 = "BLK_NUM = '%s'" % (blk) arcpy.SelectLayerByAttribute_management(lyr, "NEW_SELECTION", query + " AND " + query1 + " AND " + query2)
or better yet:arcpy.MakeFeatureLayer_management(lyr, "new_layer", query + " AND " + query1 + " AND " + query2)
Executing: SubZoom "SLEEPY HOLLOW" 4 27 Start Time: Wed Sep 12 13:18:14 2012 Running script SubZoom... Starting SLEEPY HOLLOW 4 27 tax_acct SUBDIVISIO = 'SLEEPY HOLLOW' UNIT_NUMBE = '4' BLK_NUM = '27' Traceback (most recent call last): File "G:\Sub.py", line 45, in <module> main() File "G:\Sub.py", line 35, in main arcpy.SelectLayerByAttribute_management(lyr, "NEW_SELECTION", query + " AND " + query1 + " AND " + query2) File "C:\Program Files\ArcGIS\Desktop10.1\arcpy\arcpy\management.py", line 6461, in SelectLayerByAttribute raise e ExecuteError: ERROR 000358: Invalid expression Failed to execute (SelectLayerByAttribute). Failed to execute (SubZoom). Failed at Wed Sep 12 13:18:15 2012 (Elapsed Time: 1.00 seconds)
import arcpy def main(): arcpy.AddMessage("Starting") # Get and set variables sub = arcpy.GetParameterAsText(0) unit = arcpy.GetParameterAsText(1) blk = arcpy.GetParameterAsText(2) lot = arcpy.GetParameterAsText(3) layer_name = "tax_acct" df_name = "Layers" arcpy.AddMessage(sub) arcpy.AddMessage(unit) arcpy.AddMessage(blk) arcpy.AddMessage(lot) # Define mxd, df and lyr objects mxd = arcpy.mapping.MapDocument("CURRENT") df = arcpy.mapping.ListDataFrames(mxd, df_name)[0] lyr = arcpy.mapping.ListLayers(mxd, layer_name, df)[0] arcpy.AddMessage(lyr.name) # Create where clause for selection query = "SUBDIVISIO = '%s'" % (sub) query1 = "UNIT_NUMBE = '%s'" % (unit) query2 = "BLOCK_NUMB = '%s'" % (blk) query3 = "LOT_NUMBER = '%s'" % (lot) arcpy.AddMessage(query) arcpy.AddMessage(query1) arcpy.AddMessage(query2) arcpy.AddMessage(query3) arcpy.SelectLayerByAttribute_management(lyr, "NEW_SELECTION", query) arcpy.SelectLayerByAttribute_management(lyr, "SUBSET_SELECTION", query1) arcpy.SelectLayerByAttribute_management(lyr, "SUBSET_SELECTION", query2) arcpy.SelectLayerByAttribute_management(lyr, "SUBSET_SELECTION", query3) # Set df extent to layer selection df.extent = lyr.getSelectedExtent() arcpy.RefreshActiveView() arcpy.AddMessage("Completed") main()