topic Re: Python Noob in Python Questions

Python Noob

JoshMoloney — Thu, 24 Nov 2011 00:31:40 GMT

Greetings,

I am an amatuer when it comes to python so could someone please help with my simple questions:

1) Is the arcpy module available in ArcGIS 9.3 (I think it is 10 / python 2.6)
2) What is the python code to open a shapefile in ArcGIS 9.3 (not using arcpy module)?

Thanks,
Josh

Re: Python Noob

DanPatterson_Retired — Thu, 24 Nov 2011 16:45:06 GMT

1 No, arcpy is for version 10
2 check the 9.3 help files for "searchcursor"

Re: Python Noob

JoshMoloney — Thu, 24 Nov 2011 20:03:59 GMT

Hi Dan,

I checked out the searchcursor... not sure how you use this to open a shapefile up in ArcMap. I have used cursors before in VBA code to go through each record.

I call the python script from a toolbox within an open session of ArcMap. I want it to open a shapefile (chosen by the user with a dialog box). I can get the filepath to the script with the dialog box but I have no idea how to add that shapefile to the arcmap session.. It is easy with arcpy, but I don't have that luxury.

Any ideas?

Thanks,
Josh

Re: Python Noob

DanPatterson_Retired — Thu, 24 Nov 2011 21:28:42 GMT

makefeaturelayer ? Is that what you are after?

Re: Python Noob

JamesHood — Tue, 29 Nov 2011 20:08:15 GMT

Greetings,

I am an amatuer when it comes to python so could someone please help with my simple questions:

1) Is the arcpy module available in ArcGIS 9.3 (I think it is 10 / python 2.6)
2) What is the python code to open a shapefile in ArcGIS 9.3 (not using arcpy module)?

Thanks,
Josh

How about this?

shapefile = "c://temp//shapefile.shp"

That's a joke, kind of.
What exactly are you trying to do ? What do you mean by open? Why can't the user add a shapefile to ArcMap and then open its attribute table or what ever it wants to do there?

What's the desired process or end result? What does the user need to do with the shapefile once its been opened?

Re: Python Noob

PatrickFischer1 — Tue, 29 Nov 2011 23:48:35 GMT

ok I was in your shoes not two months ago. First off there a few things you need to understand with python firstly being how geoprocessing works from python to arcgis. A lot of useinfo is in the help menu about python, main points to learn first are parameters, workspaces, and the tools in the tool box. You can also view the script of any tool by putting inside of a model (model builder) and export that model to a script. You can then view that script and look at how the tool is written. You can also look up a tool through the help menu and read its documentaion which will tell you what parameters do what. I hope this helps you hit the ground running. In regard to your question use the yellow Add Data button to add shapefiles to your mxd.

Re: Python Noob

JoshMoloney — Wed, 30 Nov 2011 00:46:53 GMT

Greetings Folks,

Sorry for being too vague guys!

The shapefile is created during the script (which I created using model builder then adding a few tweaks). It works fine, I have no problems with this basic scripting. All I want to do is open a shapefile that gets created during the script. At the moment the shapefile is created and after the script has run the user has to press the yellow add data button. I think this is inefficient and would like the shapefile to automatically open.

Does anyone know how to open a shapefile in ArcMap using python???

Re: Python Noob

MathewCoyle — Sat, 11 Dec 2021 21:01:13 GMT

So you mean you want to add a shapefile to your TOC? I think people were confused because opening and adding a shapefile mean two different things to most people.

What you want is

arcpy.MakeFeatureLayer_management(yourShapefile, "TOC name")
arcpy.RefreshActiveView()

Re: Python Noob

JoshMoloney — Wed, 30 Nov 2011 20:11:08 GMT

Thats right, however I can't use arcpy (don't have arcpy module with arcgis 9.3)

Re: Python Noob

MathewCoyle — Wed, 30 Nov 2011 20:25:39 GMT

Doesn't matter, it is a basic tool available in any recent python package. You just use your arcgisscripting instance instead of arcpy.
http://webhelp.esri.com/arcgisdesktop/9.3/index.cfm?id=1867&pid=1865&topicname=Make_Feature_Layer_(Data_Management

Re: Python Noob

JoshMoloney — Thu, 01 Dec 2011 00:01:53 GMT

Doesn't matter, it is a basic tool available in any recent python package. You just use your arcgisscripting instance instead of arcpy.
http://webhelp.esri.com/arcgisdesktop/9.3/index.cfm?id=1867&pid=1865&topicname=Make_Feature_Layer_(Data_Management

Cheers Matt, I'll try it out

Re: Python Noob

JoshMoloney — Thu, 01 Dec 2011 00:37:51 GMT

No luck.. Here's some Pseudocode:

theSession = get the current ArcMap session
theSession.addlayer(layer filepath) 'add to TOC

Please note, I mentioned shapefile before, but with some additions to my script it is now a .lyr file I need to add

Does anyone have a code sample or could someone please expose the dark secret of how to add a layer to the TOC of the current session. Remember no arcpy (Using ArcGIS 9.3.1)!

Re: Python Noob

MathewCoyle — Thu, 01 Dec 2011 18:10:31 GMT

Are you running this as a script tool or as a separate instance?

Re: Python Noob

JoshMoloney — Thu, 01 Dec 2011 18:42:36 GMT

Are you running this as a script tool or as a separate instance?

As a script tool

Re: Python Noob

MathewCoyle — Thu, 01 Dec 2011 18:55:48 GMT

Try posting your entire code, use code blocks,

like this

and hopefully we can get to the bottom of your problem.

Re: Python Noob

JoshMoloney — Sat, 11 Dec 2021 21:01:16 GMT

Try posting your entire code, use code blocks,
like this
and hopefully we can get to the bottom of your problem.

OK. All I want to do is add SF_RENDERED to the arcmap TOC. ArcMap session is where the script is run from (from personal arcgis tollbox).

# Import system modules
import sys, string, os, arcgisscripting


# get the shapefile
from Tkinter import * 
import tkFileDialog

# Create the Geoprocessor object
gp = arcgisscripting.create()

master = Tk() 
master.withdraw() #hiding tkinter window 
  
file_path = tkFileDialog.askopenfilename(initialdir="D:\\", title="Open file", filetypes=[("Shapefile",".shp"),("All files",".*")]) 
 
if file_path.find('.shp') == -1:
   print "Not a shapefile, quiting"     
   master.quit()

 
if file_path != "": 
   print "you chose file with path:", file_path
   SF = file_path
else: 
   print "you didn't open anything!"
   sys.exit()
   
def rchop(thestring, ending): 
  if thestring.endswith(ending): 
    return thestring[:-len(ending)] 
  return thestring

#get the tolerance
toly = 0
from tkMessageBox import askokcancel           

class Quitter(Frame):                          
    def __init__(self, parent=None):
        Frame.__init__(self, parent)
        self.pack()
        widget = Button(self, text='Done', command=self.quit)
        widget.pack(expand=YES, fill=BOTH, side=BOTTOM)
    def quit(self):
        gp.addmessage('You chose ' + ent.get() + ' for the tolerance...well played!')
        toly = ent.get()
        gp.addmessage(toly)
        gp.addmessage(toly)          
                  
           
        #local variables
        SF_Copy = rchop(file_path, '.shp') + '_copy.shp'
        SF_Copier = SF_Copy + " #"
        SF_COUNT = rchop(file_path, '.shp') + '_collectevents.shp'
        SF_Integrated = rchop(file_path, '.shp') + '_integrated.shp'
        SF_Rendered = rchop(file_path, '.shp') + '_rendered'

        # Load required toolboxes...
        gp.AddToolbox("D:/ArcGIS/ArcToolbox/Toolboxes/Spatial Statistics Tools.tbx")
        gp.AddToolbox("D:/ArcGIS/ArcToolbox/Toolboxes/Data Management Tools.tbx")


        ## Process: Copy Features...
        gp.CopyFeatures_management(SF, SF_Copy, "", "0", "0", "0")
 
        gp.addmessage('Backup copy has been made')
        ## Process: Integrate...
        gp.Integrate_management(SF_Copier, toly)
        gp.addmessage('Integration completed')
        ## Process: Collect Events...
        gp.CollectEvents_stats(SF_Copy, SF_COUNT)

        gp.addmessage('Events have been collected')
        SF_COUNT = SF_COUNT.replace("/","\\")
        SF_Rendered = SF_Rendered.replace("/","\\")
        gp.addmessage('Creating ' + SF_COUNT)
        gp.addmessage('Creating ' + SF_Rendered)


        # Process: Count Rendering...
        gp.CountRenderer_stats(SF_COUNT, "ICOUNT", SF_Rendered, "5", "bright_pink" ,"")
        Frame.quit(self)
        gp.addmessage('done and dusted')
 
 #this bit was me having a crack at adding it to the TOC
 gp.MakeFeatureLayer_management(SF_Rendered, "Untitled")
 gp.RefreshActiveView()

root = Tk()
root.title("Enter the tolerance value for integrate tool")
L1 = Label(root, text="Enter the tolerance value for integrate tool (m):  ")
L1.pack( side = LEFT)

ent = Entry(root)
ent.insert(0, '20')    
#ent.pack(side=TOP, fill=X)          
ent.pack(side=LEFT)
ent.focus()                         
#ent.bind('<Return>', (lambda event: quitter()))
ent.bind(toly, (lambda event: quitter()))       
#btn = Button(root, text='Fetch', command=fetch)    
#btn.pack(side=LEFT)
Quitter(root).pack(side=RIGHT)
root.mainloop()

Re: Python Noob

RuthEmerick — Fri, 02 Dec 2011 13:27:22 GMT

This might help: http://forums.arcgis.com/threads/20040-adding-processed-shapefiles-to-ArcMap-automatically

Re: Python Noob

JoshMoloney — Sun, 04 Dec 2011 19:13:43 GMT

How about this?

shapefile = "c://temp//shapefile.shp"

That's a joke, kind of.
What exactly are you trying to do ? What do you mean by open? Why can't the user add a shapefile to ArcMap and then open its attribute table or what ever it wants to do there?

What's the desired process or end result? What does the user need to do with the shapefile once its been opened?

Jahood, do you have any input? You posed several questions and I think I answered them for you.

Re: Python Noob

JoshMoloney — Mon, 05 Dec 2011 04:00:30 GMT

I'm going to develop this as a tool in trusty old Arcobjects VBA...it's crazy how hard it is to do something so simple...

Thanks for your help folks

Re: Python Noob

JoshMoloney — Sat, 11 Dec 2021 21:01:19 GMT

Hello good people.

Just updating this thread with VBA code / tool that I have used instead of a python script. Thanks for your help everyone...I'm going out to buy some python books at lunch time in readiness for our upgrade to ArcGIS 10!

Private Sub ICEWR_Click()
On Error GoTo ERRORR
Dim pGxDialog As IGxDialog
Set pGxDialog = New GxDialog

pGxDialog.ButtonCaption = "Add"
pGxDialog.StartingLocation = "D:\Data"
pGxDialog.Title = "Add the shapefile you wish to integrate and collect events"

pGxDialog.AllowMultiSelect = True

Dim pLFilter As IGxFile
Set pLFilter = New GxFile

Dim pGxFilter As IGxObjectFilter
Set pGxFilter = New GxFilterShapefiles

Set pGxDialog.ObjectFilter = pGxFilter

Dim pLayerFiles As IEnumGxObject
pGxDialog.DoModalOpen 0, pLayerFiles

'Dim pLayerFile As IGxObject
Dim pLayerFile As IGxDataset
Set pLayerFile = pLayerFiles.Next

'Dim pGxLayer As IGxLayer
Dim pGxLayer As IFeatureLayer
Dim pGxFeatureClass As IFeatureClass
Set pGxFeatureClass = pLayerFile.Dataset
Set pGxLayer = New FeatureLayer
Set pGxLayer.FeatureClass = pGxFeatureClass
pGxLayer.Name = pGxFeatureClass.AliasName
theshapefile = pGxLayer.Name
Dim pMxDoc As IMxDocument
Set pMxDoc = ThisDocument



pMxDoc.AddLayer pGxLayer
pMxDoc.ActiveView.Refresh
pMxDoc.UpdateContents
Dim pMap As IMap
Set pMap = pMxDoc.FocusMap

For i = 0 To pMap.LayerCount - 1
    If pMap.Layer(i).Name = theshapefile Then
    getindex = i
    End If
Next i


Dim pl2 As IDataLayer2
Set pl2 = pMxDoc.FocusMap.Layer(getindex)
Dim pdsNAME As IDatasetName
Set pdsNAME = pl2.DataSourceName
theworkarea = pdsNAME.WorkspaceName.PathName & "\"


SF_Copy = theworkarea & theshapefile & "_copy.shp"
SF_Copier = SF_Copy & " #"
SF_COUNT = theworkarea & theshapefile & "_collectevents.shp"
SF_INTEGRATED = theworkarea & theshapefile & "_integrated.shp"
SF_Rendered = theworkarea & theshapefile & "_rendered"

toly = InputBox("Enter a tolerance value for integration please", "Tolerance")
' Create the Geoprocessor object
Set gp = CreateObject("esriGeoprocessing.GPDispatch.1")

' Load required toolboxes...
gp.AddToolbox "D:/ArcGIS/ArcToolbox/Toolboxes/Spatial Statistics Tools.tbx"
gp.AddToolbox "D:/ArcGIS/ArcToolbox/Toolboxes/Data Management Tools.tbx"

' Process: Copy Features...
gp.CopyFeatures_management theshapefile, SF_Copy, "", "0", "0", "0"
gp.Integrate_management SF_Copier, toly
gp.CollectEvents_stats SF_Copy, SF_COUNT
gp.CountRenderer_stats SF_COUNT, "ICOUNT", SF_Rendered, "5", "bright_pink", ""

Exit Sub
ERRORR:
    MsgBox "You may have already run this and forgotten to delete files created last time", vbCritical, "Error" 'will add a file check and delete to overcome this problem when i get time
End Sub