Surface Tools for Points, Lines and Polygons (v. 1.6b)

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Surface Tools for Points, Lines and Polygons (v. 1.6b)

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Author	Jeff Jenness
File Name	surface_tools_esri.zip
Language	Avenue
Last Modified	Feb 12 2008
Status of work	Public Domain
Software	ArcView GIS
File Size	1302.64 kb
Downloads	15189
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Summary
DESCRIPTION: This extension allows you to calculate various surface and topographic characteristics for Point, Line or Polygon Themes that overlay a GRID or TIN surface: Point Themes: Calculate the X- and Y-Coordinates, the Slope, Aspect and Elevation, and the surface area, flat area and (surface/flat) area ratios within a circular area surrounding each point. Also calculate the minimum, maximum, mean and standard deviation of elevation values, and identify the high and low points, in that circular area. Line (or Polyline) Themes: Calculate the surface length, the flat length, and the (Surface Length)/(Flat Length) ratio of each line, the minimum slope, maximum slope and average slope of that line, and the start, end, minimum, maximum and average elevation, elevation range and absolute/cumulative elevation change of that line. You can also generate a point shapefile of the high and low points on that line. Elevational Profiles of Routes, including several tools to modify their appearance Polygon Themes: Calculate the surface area within polygons, the flat area and the (surface/flat) area ratio within polygons. You can also calculate the surface area and the land volume within each polygon that lies above and below a specified elevation. Finally, you can calculate the highest elevation, the lowest elevation, and the elevation range, mean and standard deviation within each polygon, and you can generate a shapefile of the high and low points within that polygon. Use GRID or TIN elevation theme: You can use either a GRID or TIN as your elevation theme. If you use a GRID, then this extension will create a TIN of the relevant area and calculate surface and topographic data from the new TIN. Save and clip TINs: CAUTION: A clipped TIN may not be exactly what you think it is. See the manual or online documentation for an explanation of what happens when a TIN is clipped. REQUIRES: This extension requires the Spatial Analyst and 3D Analyst extensions, as well as a point, polyline or polygon theme and an elevation theme. The elevation theme can be either a GRID or a TIN, but it must completely encompass the features. If you are running AV 3.0a, you must download the Dialog Designer from ESRI at: http://support.esri.com/index.cfm?fa=downloads.patchesServicePacks.viewPatch&PID=25&MetaID=483 UPDATES: V. 1.6b (February 11, 2008) fixes a bug in which multiple coincident extreme points were generated (i.e. several Lowest Points, all at the same location). Now only one point feature will be generated for each unique location. A full manual in Acrobat PDF format is included in the zip file and may be viewed on-line at: http://www.jennessent.com/arcview/surface_tools.htm For more ArcView Extensions and other software by the author, please visit the author’s software download page at: http://www.jennessent.com/arcview/arcview_extensions.htm Enjoy! Jeff Jenness... the complete description can be found in the readme.txt file included in the zipfile download.

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