Download e-book for kindle: Python For ArcGIS by Laura Tateosian (auth.)

By Laura Tateosian (auth.)

ISBN-10: 3319183974

ISBN-13: 9783319183978

ISBN-10: 3319183982

ISBN-13: 9783319183985

This publication introduces Python scripting for geographic details technology (GIS) workflow optimization utilizing ArcGIS. It builds crucial programming abilities for automating GIS research. Over two hundred pattern Python scripts and a hundred seventy five classroom-tested routines strengthen the educational goals. Readers will discover ways to: • Write and run Python within the ArcGIS Python Window, the PythonWin IDE, and the PyScripter IDE • paintings with Python syntax and knowledge forms • name ArcToolbox instruments, batch approach GIS datasets, and control map records utilizing the arcpy package deal • learn and regulate proprietary and ASCII textual content GIS facts • Parse HTML web content and KML datasets • Create websites and fetch GIS information from net resources. • construct user-interfaces with the local Python dossier conversation toolkit or the ArcGIS Script instruments and PyToolboxes Python for ArcGIS is designed as a chief textbook for advanced-level scholars in GIS. Researchers, govt experts and pros operating in GIS also will locate this e-book valuable as a reference.

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The path won’t be interpreted correctly if a carriage return is embedded in it. But very wide lines of Python code are awkward to read. As a rule of thumb, Python lines of code should be less than 100 characters wide, so the reader doesn’t need to scroll right. A line continuation character ('\'), a backslash embedded in a string at the end of a line, allows a string to be written on more than one line, while preserving the single line spacing in the string literal value. In other words, though it is assigned on multiple lines, it will be printed as a single line variable.

This time, we will add the numbers 2 and 3. To run the script with these two arguments, select Ctrl + r and in the ‘Run Script’ window ‘Arguments’ text box, place a 2 and 3, separated by a space. 5. Click ‘OK’. The output in the Interactive Window should look like this: >>> The sum is 5. py’ so that it can use arguments. argv, to get the values of the arguments that are passed into the script. argv[2] holds the second one. We’ll revisit script arguments in more depth in an upcoming chapter. For now, you know enough to run some simple examples.

For now, we’ll just highlight two modules (sys and os) that are used in early chapters and introduce others as the need arises. The sys module gives access to variables that are used by the Python interpreter, the program that runs Python. 3\\arcpy', 'C:\\Windows\\system32\\python27. path is a list of directory paths (only a few are shown here— your list may differ). These are the locations used by the Python interpreter when it encounters an import statement. The Python interpreter searches within these directories for the name of the module being imported.

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Python For ArcGIS by Laura Tateosian (auth.)

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