Copyright © 2002, 2003, 2004 ESRI. All rights reserved. What's New in ArcGIS 9 Introduction to Geoprocessing in ArcGIS 9 Jason Grootens ESRI-Minneapolis.

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-2 Workshop objectives  Introduce Geoprocessing at ArcGIS 9: New Framework  Dialogs (Tools)  Modelbuilder  Command Line  Scripting  Ask questions and participate in discussions

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-3 What is ArcGIS? ArcGIS clients Application/Data servers ArcGIS Desktop EXTENSIONSEXTENSIONS ArcGIS Engine Components ArcObjects ArcReader ArcView ArcInfo ArcEditor Custom application RDBMS ArcSDE ArcGIS Server ArcIMS EXTENSIONSEXTENSIONS ArcPad Network Web browser

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-4 What is geoprocessing?  Perform a variety of geographic based tasks Spatial Analysis Conversion Projections Data Management Database CAD GDB Proximity?

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-5 Geoprocessing answers spatial questions What is the fastest route over rugged terrain? How many people are within a contamination zone? What is the closest fire hydrant to each building? Where is the best location for a store? Census Block Groups Distance to Roads Land Cost Distance to competitors

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-6 Geoprocessing in ArcGIS  ArcGIS 9 enhances geoprocessing  Hundreds of tools available  Wide variety of methods for accessing geoprocessing tools  Geoprocessing is what makes a GIS

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-8 Accessing the ArcToolbox window  A dockable window with toolboxes  Obtained in ArcMap, ArcCatalog, ArcGlobe, or ArcScene  Tree view in ArcCatalog  No longer a separate application

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-9 Toolsets and tools  Toolbox: Container for tools and toolsets  Toolset: Logical container of tools and other toolsets  Tool: Single geoprocessing operation  System tool, model, script, custom built tool  All tools look and act the same Toolbox Toolset Tool

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-10 Executing tools  Double-click any tool to specify parameters  Messages appear in progress dialogs and Command Line window

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-11 Overview of toolboxes Core toolbox Analysis Geoprocessing for feature classes Conversion CAD tools, conversion tools Data Management Field and workspace tools Coverage – *Workstation install Geoprocessing for coverages Linear Referencing Creating routes, locations Geocoding Building locators, table matching Cartography Masking annotation, features Spatial Statistics Analyzing patterns, distributions Core toolbox Analysis Geoprocessing for feature classes Conversion CAD tools, conversion tools Data Management Field and workspace tools Coverage – *Workstation install Geoprocessing for coverages Linear Referencing Creating routes, locations Geocoding Building locators, table matching Cartography Masking annotation, features Spatial Statistics Analyzing patterns, distributions Extensions 3D Analyst TIN tools Geostatistical Analyst Convert to GRID tool Spatial Analyst All tools currently in Spatial Analyst Extensions 3D Analyst TIN tools Geostatistical Analyst Convert to GRID tool Spatial Analyst All tools currently in Spatial Analyst *Ability to create your own toolboxes

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-12 Tools and licensing  Ability to use ArcToolbox, command line, models, scripts included at all license levels  The amount of tools vary depending on license/extensions  ArcView = 102 tools  ArcEditor = 104 tools  ArcInfo = 251 tools  Spatial Analyst extension = 158 tools  3D Analyst extension = 45 tools  Geostatistical Analyst = 1 tool  Total of 455 tools with ArcInfo and all extensions

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-13 Toolbox tabs  Favorites  Most frequently used tools  Index  Alphabetical listing of all tools  Search  Search tools by name or keyword

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-14 Supported data types  At ArcGIS 8.x, ArcToolbox worked primarily with coverages  At ArcGIS 9, ArcToolbox works with all data types used in ArcGIS CAD Coverage Geodatabase Shapefile Raster Tables Geoprocessing Layer files Behavior

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-15 Accessing geoprocessing functionality Command Line Simple execution Shortcut to tools Command Line Simple execution Shortcut to tools Scripts Batch processing Branching Scripts Batch processing Branching ArcToolbox Execute as dialogs Simple operations ArcToolbox Execute as dialogs Simple operations ArcObjects Use tools with ArcObjects ArcObjects Use tools with ArcObjects Model Builder Graphical Documentation Chain tools into one process Model Builder Graphical Documentation Chain tools into one process

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-16 Creating your own toolbox  Used to store models, scripts, custom tools, or a shortcut to frequently used tools  My Toolboxes  Created in ArcToolbox or Catalog Tree  Stored as.tbx in user profile  Folder  Created in Catalog Tree  Stored as.tbx in folder  Geodatabase (personal or enterprise)  Created in Catalog Tree  Stored as table in GDB Stored as.TBX file Stored in geodatabase

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-17 Creating your own tools  Three ways of creating a tool  ModelBuilder  Script  Custom-built tool with ArcObjects  All tools act and behave the same  Execute as a dialog  Accessing documentation

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-18 Using and creating models  Drag and drop environment  Allows processing of multiple tools at once  Documentation of process  Easy-to-change parameters and re-execute model Project dataToolDerived data

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-19 Using and creating tools with scripts  Use any language with a COM interpreter  Python, VBScript, JScript, Perl  Geoprocessor also accessible in programming languages  VBA, VB, C#, etc  Batch processing  Branching based upon conditions  Delayed processing  Can run outside of ArcGIS #For each shapefile in the list fc = fcs.next() while fc: outname = outworkspace + "\\" + fc #Clip each feature class in the list #Give output fc the name of the input gp.Clip_analysis(fc, clipfc, outname) fc = fcs.next() #For each shapefile in the list fc = fcs.next() while fc: outname = outworkspace + "\\" + fc #Clip each feature class in the list #Give output fc the name of the input gp.Clip_analysis(fc, clipfc, outname) fc = fcs.next()

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-20 Using tools at the command line  Run a tool from the interface without a dialog  Shortcut for advanced users  Similar to ArcInfo Workstation Clip_analysis Clip_analysis county_censusblocks citylimit city_censusblocks

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-21 Using and creating tools with ArcObjects  All geoprocessing tools can be called as COM components  Create custom tools (.dll) Geoprocessing Object Model Diagram

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-22 Environment Settings  Common parameters that can be applied to many tools within a geoprocessing session  Settings persist through all tools (models, scripts, custom tools) Geodatabase settings X/Y Domain Precision Geodatabase settings X/Y Domain Precision Geodatabase raster Statistics Compression Geodatabase raster Statistics Compression General settings Current workspace Output spatial reference Extent General settings Current workspace Output spatial reference Extent Raster settings Cell size Mask Raster settings Cell size Mask

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-23 Saving environment settings  Where environment settings get saved  Normal.gxt for ArcCatalog  A map document (.mxd) or template (.mxt)  Save settings into an XML file to load into other sessions  Favorites tab  Environment settings  Command line variables  Save settings to default

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-25 Modeling spatial problems  Models help understand and solve complex problems  Models simplify reality  Models combine geographic layers to answer questions  Where should we build our next store? Reality GIS layers Suitability for store Model criteria: - Zoned commercial - Near target population - Away from competition

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-26 Types of models  Repetitive tasks  Minimize grunt work  Efficiently execute a series of frequently used tools  Suitability models  Use to find best location (businesses, vineyards, evacuation centers)  Process models  Show the landscape as conditions change (fire spreads, rivers flood, oil slicks move) Best store location Filling a reservoir GIS data layers

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-27 Why use ModelBuilder?  Fast analysis; efficient processing  Re-execute the same model, slightly changing parameters to see how end results differ  Complex models  Graphical documentation of work Project dataToolDerived data

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-28 Using ModelBuilder  Obtained from a toolbox  Create new models in your own toolboxes  All tools within ArcToolbox can be used in ModelBuilder Existing model

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-29 Model elements  Project data: Data that exists before model is run  Blue oval  Tool: Operation performed on input data  Yellow-orange rectangle  Derived Data: Output data created by a function  Green oval  Process: Set of elements  Run one process at a time or all at once Process Model Project data Project data Tool Derived data

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-30 Adding model elements  Drag and drop from ArcCatalog or ArcMap  Tools from ArcToolbox  Data  Add empty variables  Supply data source at a later time

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-32 Three states of model elements  Not ready to run: Parameters not defined  Ready to run: All elements colored  Already run: All elements colored and shadowed Not Ready to Run Ready to Run Already Run

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-33 How to execute models  Entire model from ModelBuilder  Can execute one process at a time from ModelBuilder  As a tool dialog

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-34 Parameters  Input/Output data and values for a tool  Used for running model as dialog  Right-click model element and choose to create parameter Data and location Buffer distance Cell size Output name and location Input data Project Data Function Derived Data Project dataToolDerived data

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-36 Validating a model  Validating a model  Returns model elements to ready-to-run or not ready-to-run states  Validate to determine if model is invalid  Invalid models  Parameter values no longer valid (referencing non-existent data)  Tools referenced no longer exist  COM tool inside the model is unregistered

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-37 Intermediate data  You determine which derived data elements are intermediate  Can delete after model has been executed  Save disk space Roads Land use Buffer Select Roads buffer Suitable sites Erase Best sites Intermediate data

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-39 Model diagram properties  Use grids for better control in placing elements  Change flow orientation  Change the color, shape, and font

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-40 Adding labels  Give the model canvas more detail  Diagram labels  Free floating labels  Element labels  Maintain position relative to model element  Connector labels (tool or data)  Maintain position relative to connector

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-41 Exporting models  Export to a graphic  Export as.bmp,.jpg,.emf  Useful for placing in map layouts  Printing models  Add borders, captions, page numbers

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-42 Tool documentation  Ability to edit documentation for tools and toolboxes  Documentation built into ArcGIS online help system  Ability to create metadata  Useful for Metadata server

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-43 Model Report  XML document available for viewing or creation  Useful for historical view of processes executed  Holds information on  Variables  Processes  Messages  Time and date of execution

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-44 Saving and sharing models  Model is saved to.tbx file or geodatabase  Give others.tbx or geodatabase to share model  Set parameters if used with different data  Export model as a script Windows Explorer

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-48 Command Line window  Available in all ArcGIS applications  Holds messaging for all tools executed  Similar interface to ArcInfo Workstation  Commands and arguments may be different ArcInfo Workstation 7.x ArcGIS 9

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-49 Why use command line?  Saves time if familiar with geoprocessing tools  Allows you to obtain quick view of all tools available  Execute scripts and models  Shortcut to tools in ArcToolbox

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-50 What can be accomplished at command line?  Executing tools select soils48 C:\undrained.shp "OTHERPH" = 'UNDRAINED'  Environment settings CellSize 50 Workspace C:\Arc9output\OrangeCounty.mdb  Create variables

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-51 Syntax notation  Similar to ArcInfo Workstation and Spatial Analyst ToolName {Argument} {KEYWORD|KEYWORD} RequiredOptionalOptional Keywords  First optional keyword will be taken as default  Use # to skip arguments  Allows multi-line commands  Shift + Enter

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-52 Passing in parameters  Usage appears showing all parameters  Dropdown list shows available layers in ArcMap TOC  Type in name of command and press Enter  Usage appears in Command Line window

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-53 Messages  Successful completion of a tool  Includes Start and End Time  Errors (red font)  Indicates a tool did not execute  Warnings (green font)  Indicates that a step may have been skipped; gives usage

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-54 Editing and re-executing existing processes  Allows to edit parameters or re-execute without changing  If source of layers changes  Change a parameter (buffer distance)  Edits are made (new features added)  Selection changes *Can also use up and down arrows on keyboard for previous commands

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-55 Adding a toolbox to ArcToolbox  Only tools in ArcToolbox recognized in command line  In ArcToolbox  Browse for toolboxes  In ArcCatalog  Add any toolbox by right-clicking  Copy and paste into ArcToolbox

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-56 Variable manager  Make variables for parameters  Data and workspaces  Expressions  Reclassification  Spatial reference

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-57 Accessing data and tools  Some tools can have the same name  ToolName_ToolboxAlias Buffer_analysis infeatures outfeatures or Buffer_arc infeatures outfeatures Core Toolbox Analysis = Analysis Conversion = Conversion Data Management = Management Coverage = Arc Geocoding = Geocoding Core Toolbox Analysis = Analysis Conversion = Conversion Data Management = Management Coverage = Arc Geocoding = Geocoding Extensions 3D Analyst = 3D Spatial Analyst = SA Extensions 3D Analyst = 3D Spatial Analyst = SA

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-59 Executing a model from command line  Toolbox containing model must be in ArcToolbox  Execute model by calling model name, not the label

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-62 Why write scripts for geoprocessing?  Similar advantages that models have  Efficiently execute series of different tasks  Easy to read and document  Easy to share  Perform batch operations  Use logic to control tool execution  Interface with other systems  Self contained (single file)  Run any time  Familiar environment for AML and Avenue users  Users don’t have to learn a proprietary language

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-63 GpDispatch  An ArcObject accessible in all COM languages/scripts  Also referred to as the Geoprocessor  Exposes all geoprocessing functionality  Object is late-bound (no code completion) VBScript JScript Python Communication through IGPDispatch Programming Languages Geoprocessor Access to all geoprocessing tools Buffer Clip AddField

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-64 Where to write scripts?  Choice of scripting languages: Any language with a COM interpreter VBScript Based on VB: Simpler Popular Web language JScript Syntax similar to C/Java Works in many Web browsers Python Flexible, powerful Easy to learn Perl and other scripting languages

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-65 Why use Python?  Flexible, easy scripting language  Object-oriented  Ability to compile scripts  Offers a debugging environment  Modular: Can be broken apart  Cross platform  Works in many Web browsers  It is FREE  ESRI samples provided Python script Python script

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-66 Installing Python for geoprocessing (Windows)  Included with ArcGIS 9  Also a free download  Python Foundation (www.python.org)www.python.org  Includes command line, code editor, and documentation

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-67 Writing scripts  Import COM client support import win32com.client  Instantiate the Geoprocessor object gp = win32com.client.Dispatch (" esriGeoprocessing.GPDispatch.1")  Set properties (e.g., where processing will occur?) gp.workspace = "c:\\Florida.mdb"  Comment code # Buffer roads by 100 meters  Run tools gp.Buffer_analysis("roads", "rdbuf100", "100")

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-68 Constructing Python statements  Use the Geoprocessor with object-oriented programming  Assign a value to an environment setting with Geoprocessor.EnvironmentSetting = Value gp.Workspace = "c:\\temp"  Call tools with Geoprocessor.ToolName (parameter1,.., parameterN) gp.CreateFolder("c:\\Florida", "Scripts") gp.Clean("Europe", "#", "#", "#", "POLY")

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-69 Referencing data in Python  Use \\ or / for path names  Python is based upon the C programming language  Defined by double (") or single (') quotes gp.workspace = "c:\\Florida" gp.CreateFolder('c:\\Florida', 'Scripts')  Concatenate strings outputfc = gp.workspace + "\\" + inputfc

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-70 Referencing tools and toolboxes  Only system toolboxes available by default from Geoprocessor  Analysis, coverage, data management, etc.  Use toolbox alias if tools have the same name gp.Buffer_analysis(roads, Out_Buff, "10 Meters", "FULL")  Add your own toolbox gp.AddToolbox("c:\\MyProject\\CrossCountryMobility.tbx") gp.BestPath("start.shp", "destination.shp", "results.shp")

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-71 Example script # Import COM support import win32com.client # Create the Geoprocessor object gp = win32com.client.Dispatch("esriGeoprocessing.GpDispatch.1") roads = "C:/Data/Florida/ROADS.shp" Out_Buff = "C:/Data/Florida.mdb/ROADS_Buffer" citylimit = "C:/Data/Florida/citylimit.shp" Out_Clip = "C:/Data/Florida.mdb/BUFF_Clip" # Process: Buffer... gp.Buffer_analysis(roads, Out_Buff, "10", "FULL", "ROUND") # Process: Clip... gp.Clip_analysis(Out_Buff, citylimit, Out_Clip)

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-72 Running scripts in different environments  Check syntax and run in PythonWin  ArcGIS applications can be closed  Run at DOS prompt Python C:\PythonScripts\RoadBuffer.py  Create a tool  Add a script to a toolbox  Open command runs script tool  Edit command opens script source in text editor

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-73 Distributing scripts  As Python source file.py  As script tools in toolboxes  User creates script tool for parameters  Share the.py file and toolbox

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-75 Batch processing  Scripts are ideally suited for batch processing  Example: Clip all shapefiles in a folder to a boundary  Rerun script when new data is added to folder Batch processing script

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-76 Listing data  Enumeration: Lists of objects without a known count  Use a looping structure to process one object at a time  ListFeatureClasses (Wildcard (optional), Type (optional)) #return a list of shapefiles in a workspace gp.workspace = "C:\\Yellowstone" fcs = gp.ListFeatureClasses("*", "all")  Examples of Enumerations  ListFeatureClasses  ListFields  ListTables  List Indexes  ListRasters  ListWorkspaces  ListDatasets fcs = all shapefiles in C:\Yellowstone

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-78 Looping  While a condition is true gp.workspace = "C:\\Yellowstone" fcs = gp.ListFeatureClasses ("*", "all") fc = fcs.next() clipfc = "C:\\Yellowstone\\studyarea.shp" outputws = "C:\\Yellowstone\\model" while fc != "": gp.clip_analysis(fc, clipfc, outputws + "\\" + fc) fc = fcs.next()  Loop is defined by indentation in Python  Indentation is a language construct in Python  Needs to be consistent  Use or spaces  Checked by TabNanny utility in PythonWin

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-79 Batch processing example import win32com.client gp = win32com.client.Dispatch("esriGeoprocessing.gpDispatch.1") gp.workspace = "C:\\Database\\Wyoming\\AlbanyCounty" #Get a list of rasters in the workspace rasters = gp.listrasters("*", "all") #Store path to the output folder outputPath = "C:\\Database\\Wyoming\\AlbanyCounty\\PilotPeakStudyArea" #For each raster in the list raster = rasters.next() while raster != "": #Set the outputname to be the same as the input outName = outputPath + "\\" + raster #For each raster, clip it to a specific extent gp.clip_management(raster, "387211 231491 410734 250303", outName) raster = rasters.next()

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-80 Built-in geoprocessor methods  Check whether an object (feature class, GDB) exists gp.Exists(myGDB)  Refresh Catalog to notify script of new data created in script gp.RefreshCatalog("c:\wksp\geodatabase.mdb")  File Management tools existing in toolboxes gp.Delete(myGDB) gp.Copy(myGDB, "C:\temp\newGDB")

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-81 Describe  Method that returns an object with a set of properties  Properties vary depending on what is being described Describe (InputValue): Object

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-82 Making decisions  If statement dsc = gp.describe(fc) inputtype = dsc.ShapeType if inputtype == "Point": gp.Buffer_analysis(fc, "hospital_buff", "500.00 Meters") else: #inputtype is polygon or line gp.Clip_analysis(fc, "cntybnd", "hospital_buff_clp")  Break statement to jump out of closest enclosing loop while field: if field.Name == "Flag": gp.CalculateField(fc, "Flag", "1") break field = fields.next()

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-83 Why use parameters with script tools?  Makes scripts more flexible  Dynamically assigns script arguments  Workspace  Feature classes  String, numbers  Write scripts to capture input arguments import win32com.client, sys gp = win32com.client.Dispatch("esriGeoprocessing.gpDispatch.1") gp.workspace = sys.argv[1] # first argument buffc = sys.argv[2] # second argument buffoutput = sys.argv[3] buffdistance = sys.argv[4]

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-85 Running scripts that have parameters  Use form to browse for data types you specify  Form automatically built based upon parameters you specify  Name of parameter you set when creating the script  Supply arguments at command line or DOS prompt

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-87 Using advanced functionality  Models can carry out actions beyond what is within the toolbox  Run a previous model as a tool  Run a script as a tool  Use an.exe or external function as part of a model Model Script Executable

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-88 Running a previous model in another model  Drag and drop model from toolbox like any other tool  If output from a previous model is a parameter, it will be exposed in a larger model P P P

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-90 History  C:\Documents and Settings\ \Application Data\ESRI\ArcToolbox\My Toolboxes  Each history model contains tools for each process executed in each ArcMap/ArcCatalog session  Honor generating reports

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-91 Using a script  Drag and drop a script from a toolbox  Create parameters in script to add connections between tool  Attach an.exe or AML to a script

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-93 Run a script at a specific time  Windows AT command AT 9:00 C:\yellowstone\yellowstone.py  Windows scheduler  Control Panel > Scheduled Tasks

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-94 Precondition property  Used to control flow of model execution  Used to branch within a model Precondition Preconditions

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-95 Branching in a model  Precondition property from a script If the input is a line or point If the input is a polygon Script Output will be polygons Output will be points

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-96 Steps for branching within a model  Create a script that will set parameters as output-based upon if/then conditions  Add the script to a toolbox, specifying output parameters that are in the script  Apply precondition properties to tools to determine model flow

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-97 Writing a script to branch in a model  Specify parameters to control which tools are executed in a model inputfc = gp.GetParameterAsText(0) #SAME AS sys.argv[1] dsc = gp.describe(inputfc) if dsc.shapetype == "polygon": gp.SetParameterAsText(1, "True") gp.SetParameterAsText(2, "False") else: gp.SetParameterAsText(1, "False") gp.SetParameterAsText(2, "True") A

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-99 Applying a precondition property  Set for tools accepting parameters from a script 1. Apply Precondition to next tool 2. Select condition from script output

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-101 Resources for learning Python  Books  Learn to Program Using Python  Learning Python  The Quick Python Book  Python, Essential Reference  Web sites  The Python Foundation (www.python.org): Tutorials, documentationwww.python.org  ESRI Instructor-led course  Introduction to Geoprocessing Scripts Using Python  Writing Geoprocessing Scripts with ArcGIS.pdf  Online help

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-102 Learning paths  Learning Guide  Learning paths organized by software and topic  Learning options  Instructor-led courses  Virtual Campus courses  Training seminars  Web workshops http://www.esri.com/training_events.html

What's New in ArcGIS 9 Copyright © 2002, 2003, 2004 ESRI. All rights reserved. 1-103  ESRI Support Center a gateway to resources http://support.esri.com  Knowledge Base  Technical articles  White papers  System requirements  Downloads  Patches and service packs  Data models  ArcScripts  User Forums  Discussion groups  E-mail lists Software support resources  For Developers  Developer resources  Request ESRI Technical Support  Available to support subscribers

Copyright © 2002, 2003, 2004 ESRI. All rights reserved. What's New in ArcGIS 9 Introduction to Geoprocessing in ArcGIS 9 Jason Grootens ESRI-Minneapolis.

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Copyright © 2002, 2003, 2004 ESRI. All rights reserved. What's New in ArcGIS 9 Introduction to Geoprocessing in ArcGIS 9 Jason Grootens ESRI-Minneapolis.

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Presentation on theme: "Copyright © 2002, 2003, 2004 ESRI. All rights reserved. What's New in ArcGIS 9 Introduction to Geoprocessing in ArcGIS 9 Jason Grootens ESRI-Minneapolis."— Presentation transcript:

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