PYTHON Project 4 - Geoprocessing Script An Van Delm – CE 697V – November 8, 2006

PYTHON Project 4 - Geoprocessing Script An Van Delm – CE 697V – November 8, 2006

Project description New Toolbox containing SCRIPTS: • create GDB • set Spatial Reference • set Extent • Input features, rasters and tables • Site Selection Tool • Field access and manipulation

for multiple purposes... • separate scripts • Parameters + use of interface • Developed Site Selection Tool is a often used combination of existing tools: buffer + select towards buffered zone (within, intersect,…) • Interface, Help and Comments

Creating GDB + Spatial Reference Provides defaults Check existence of path

Existence of path Checkdifferentpossibilities of set extent

Input features, tables and raster-data Error messages Existence and input of GDB

F T R writing in Geodatabase: when path exists + input

Site Selection Error messages Check existence and input of arguments

Default values for Dissolve and Selection type option, instead of warning message Create layer name for result out of input layer of selection

Add and/or Remove field Error messages Same input layer for Add or Remove

Use of Boolean expression to Add or/and Remove If nothing is checked -> error message

Conclusion • Scripts easily to adjust by adding parameters • Use of interface and possible values to select -> easier to use • Warning of non existing path to avoid difficulties later - Difficult to find errors when running in ArcGIS, when there are no errors in Python

PYTHON Project 4 - Geoprocessing Script An Van Delm – CE 697V – November 8, 2006