Latest Contributions by OlivierOlivier

Hi, I'm trying to debug a stand alone python script as written in http://webhelp.esri.com/arcgiSDEsktop/9.3/index.cfm?TopicName=Debugging_a_ToolValidator_class "Debugging in a Python editor" (page bottom) I thought I did things as described but what I don't understand is that if I call the script from the toolbox in ArcMap, it runs well, but if I launch the script from pythonwin, I get the following error : gp.savetolayerfile("arc", bdd + "arc.lyr") ExecuteError: Failed to execute. Parameters are not valid. ERROR 000732: Input Layer: Dataset arc does not exist or is not supported Failed to execute (SaveToLayerFile). So it appears that I'm not in the ArcMap environment as I expected. What I would like to do is exactly what is described in the help "In some cases, you need to debug your code using a Python editor ..." Thanks for any help. Olivier import arcgisscripting import pyodbc gp = arcgisscripting.create(9.3) # ------------------------- TEMP Debug Tool Validator gp.addtoolbox(r"D:... my toolbox.tbx") params = gp.GetParameterInfo("script name") # params[0].value = "value" # Classe Tool validator class ToolValidator:   """Class for validating a tool's parameter values and controlling   the behavior of the tool's dialog."""   def __init__(self):     """Setup the Geoprocessor and the list of tool parameters."""     import arcgisscripting as ARC     import pyodbc     bdd = "my folder"     mdb = bdd + "mybase.mdb"     conn = pyodbc.connect('DRIVER={Microsoft Access Driver (*.mdb)};DBQ='+mdb)     cursor = conn.cursor()     self.GP = ARC.create(9.3)     self.params = self.GP.getparameterinfo()     cursor.execute("SELECT .... my query")     rows = cursor.fetchall()     list = []     for row in rows:       list.append(row.name)     self.params[0].Filter.List=list     conn.close()     del rows,row,cursor,conn   def initializeParameters(self):     """Refine the properties of a tool's parameters.  This method is     called when the tool is opened."""     return   def updateParameters(self):     """Modify the values and properties of parameters before internal     validation is performed.  This method is called whenever a parmater     has been changed."""     return   def updateMessages(self):     """Modify the messages created by internal validation for each tool     parameter.  This method is called after internal validation."""     return #--------------------------End tool validator bdd = "my folder" mdb = bdd + "mybase.mdb" gp.workspace = mdb gp.overwriteoutput = True gp.savetolayerfile("arc", bdd + "arc.lyr") <---- ERROR validator = ToolValidator() validator.updateParameters() validator.updateMessages() ... View more

Hi, I'm searching a way to get the number of vertices composing a line, without counting them. I have not many experiences in Python, but unless I missed something searching forums and documentation, it seems that it's not a feature property as I expected. Am I right ? Thanks to all answers Olivier ... View more

Hi Can someone be so kind to explain why when I use those  lines rows = gp.SearchCursor(infc) row = rows.Next() feat=row.shape it works when infc is a shapefile but not when it's a layer ? In this case, I get "Field shape does not exist" even if it exists when I open attributes in ArcView. Thanks very much, sorry for a such basic question, Olivier ... View more

Hi, I have an existing SDE 9.2 database and I know that ArcSde 9.2 stores coordinates as a positive integer. I can't find how could I know the resolution and the extent used to create original layer. Can someone help me ? Thanks very much, Olivier ... View more