Latest Contributions by MathewCoyle

FGDB do not have a size limit. Support multi user viewing/editing. Topology, domains etc. As of 10.0, there really is zero reason I know of to use a PGDB unless you need to tie it to Access for some archaic reason. ... View more

The does lock file actually stop you from doing anything? I know if FGDB lock files can persist after a session and have no impact on future sessions. I too have some lock files hanging around PGDBs after creation/processing and they don't seem impact on any analysis etc I want to do on them. ... View more

The point of scripting in ArcGIS is not just the automation part of complex tasks, but also to gain granular control over specific tools, inputs, and outputs. Several object creations will accept invalid parameters until a function is called that looks for a parameter in a specific format and does not find it. That's when an error is thrown. That being said, in this instance I cannot replicate this behaviour you are seeing. I have tried in an ArcGIS session and through IDLE. I get an error at mxd object creation with an invalid MXD filename error. What Service Pack are you using? ... View more

How far off are we talking? Meters? Kilometres? Your projection sounds like a local system, do you require a grid loaded to complete a transformation? I recall in 9.3.1 you would not get a warning if you were doing a projection with missing transformation files and would simply project it using whatever default. ... View more

in_memory workspace is in memory with a temporary reference to a directory on disk. It should disappear once you close the process it was opened in. ... View more

If you are executing the script from the system it requires UNC paths as opposed to mapped drives if you are referencing those. ... View more

If you go into your geoprocessing dropdown menu and click "Results" find the error for the tool you are running and open the Messages tab to see if there is anymore useful information. You can also copy out the python snippet of the tool and paste it somewhere to see what is being passed into the tool. ... View more

Probably not the best solution, but this should keep your loops running even if an individual iteration fails. for fc in FcList:     try:         areaTab1 = "Metrics_" + os.path.basename(fc)         for field in FieldList:             arcpy.AddField_management(fc, field, "DOUBLE")         TabulateArea(fc, "GID", LC, "Class", areaTab1 , 1) #"UTC_Metrics_" + os.path.basename(fc)         arcpy.JoinField_management(fc, "GID", areaTab1, "GID", ClassList)#"trees11_tab_" + os.path.basename(fc)         rows = arcpy.UpdateCursor(fc)         print str(fc)         for row in rows:             try:                 row.setValue(FieldList[0], (row.Shape_Area * m2ac))#Total Acres                 rows.updateRow(row)                 row.setValue(FieldList[1], row.getValue(ClassList[0]) * m2ac) #Forest Acres                 rows.updateRow(row)                 row.setValue(FieldList[2], (row.getValue(FieldList[1]) / row.Land_Acres) * 100) #Forest Percent                 rows.updateRow(row)                 row.setValue(FieldList[3], row.getValue(ClassList[1]) * m2ac) #Veg Acres                 rows.updateRow(row)                 row.setValue(FieldList[4], (row.getValue(FieldList[3]) / row.Land_Acres) * 100) #Veg Percent                 rows.updateRow(row)             except:                 pass         del row         del rows     except:         pass ... View more

Do you want your script to process that feature class at all if it doesn't have the required parameters? You could use a try/except block to exit that iteration and go to the next, or you could use a list field check on your feature class to compare against your list of fields that you want to be there. ... View more

Entering valid paths. http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//002z0000000r000000 Have you checked out Spatial Analyst? Since you set your workspace to "C:/Users/cgermain/Desktop/2050Maps" you can just do this. ExtractValuesToPoints ("10000Points_lyr.shp", "FORESTacumina", "FORESTacumina.shp","NONE","VALUE_ONLY") If that doesn't work I would try to test arcpy.Exists on each of those datasets in your workspace. arcpy.Exists("10000Points_lyr.shp") arcpy.Exists("FORESTacumina") arcpy.Exists("FORESTacumina.shp") And have you read the help on parameters for the tool you are using? http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//009z0000002t000000.htm ... View more

Either of these should work. "" or "#" gp.SelectLayerByLocation_management(tableName_e_lyr, "intersect", tableName_vec_lyr, "", "ADD_TO_SELECTION") gp.SelectLayerByLocation_management(tableName_vec_lyr, "intersect", gate_lyr, "#","REMOVE_FROM_SELECTION") Are you getting an error or anything when these execute? Or just unexpected behaviour? ... View more

# Make a layer from the feature class         gp.MakeFeatureLayer_management(gate, "gate_lyr")         gp.MakeFeatureLayer_management(tableName_e, "tableName_e_lyr")         gp.MakeFeatureLayer_management(tableName_vec, "tableName_vec_lyr")         print "Feature Layers created."         #Selecting the vectors that intersect the gate         gp.SelectLayerByLocation_management(tableName_vec_lyr, "intersect", gate_lyr)         # Add to selection, points that intersect with the previously selected vectors         gp.SelectLayerByLocation_management(tableName_e_lyr, "intersect", tableName_vec_lyr, "ADD_TO_SELECTION")         # Remove initial vector selection         gp.SelectLayerByLocation_management(tableName_vec_lyr, "intersect", gate_lyr, "REMOVE_FROM_SELECTION")         # Write the selected features to a new feature class         gp.CopyFeatures(tableName_e_lyr, tableName_sim) The feature layers are successfully created, and the first "select layer by location " works, but it doesn't seem to perform the 2 subsequent "select layer by location"'s. You need to use the proper syntax. SelectLayerByLocation_management (in_layer, overlap_type, select_features, search_distance, selection_type) http://webhelp.esri.com/arcgisdesktop/9.3/body.cfm?id=1877&pid=1865&topicname=Select%20Layer%20By%20Location%20%28Data%20Management%29&tocVisable=0 You are trying to insert "ADD_TO_SELECITON" in the search distance parameter. ... View more