Tuesday, 25 July 2017

Geoprocessing

Documents

Order by : Name | Date | Hits [ Descendent ]

ArcGIS - ArcView Erase Tool ArcGIS - ArcView Erase Tool

hot!
Date added: 03/29/2010
Date modified: 12/20/2011
Filesize: Unknown
Downloads: 2640

Now includes support to expose all parameters in model builder.

This updated script replaces the earlier python script. The tool has been created and tested using ArcGIS 9.2. However, unlike python, this script will work at all versions of ArcGIS 9. The toolbox and tool will need to be created in with an earlier version.

The first parameter is the Larger feature class ( the one whose features will be erased from). The Second parameter is the feature class with the features that will be used as a mask.

This geoprocessing has been built for an ArcGIS, ArcViw-level license, where users do not have access to the full ArcGIS, ArcInfo-level erase tool.

Because it makes use of a feature layer, the tool can executed from with in ArcMap or the ArcCatalog environment.

The methodology involves creating a union between the erase or mask featureclass and the main feature class which needs to have the features removed from behind erased feature class.

An erased feature class is created based on the non-erased feature class structure and features are appended to this feature class based using the temporary unioned feature class.

Batch Projection Utility for New Zealand (NTv2) Batch Projection Utility for New Zealand (NTv2)

hot!
Date added: 03/29/2010
Date modified: 05/04/2010
Filesize: Unknown
Downloads: 1780
This customised toolbox called "zzz SMJ Toolbox.tbx" has a toolset comprising of 3 tools that automate the projection of feature and raster datasets, and applying the NTv2 geographic transformation when there is a change of datum.

 

"zzzSMJToolbox91.tbx" is for ArcGIS releases prioer to ArcGIS 9.3.1.

The project functions work both ways between NZGD49 and NZGD2000 datums, using both the National and the Local Circuit projections.

Make sure the input dataset has a projection defined. To automate the setting of the projection of datasets apply the "SMJ Batch Project Define" tool.

Compute the rotation from polylines Compute the rotation from polylines

hot!
Date added: 03/29/2010
Date modified: 01/30/2013
Filesize: Unknown
Downloads: 1855
This tool computes the angles of all the segments that make up a polyline representation of a fault.

 

A fault is typically made up of many segments. This tool has been designed primary for use in geological datasets to find the rotation angle for each segment in the polyline, average rotation angle and plot then on a rose diagram.

Fid and rotations are are saved into a CSV file.

Add the CSV File directly into ArcMap. Construct and view the relationship with the fid (feature id) of the feature layer based on the fid.

Construct Point To Line Connectivity Construct Point To Line Connectivity

hot!
Date added: 03/29/2010
Date modified: 05/04/2010
Filesize: Unknown
Downloads: 2075
This tool is useful for cleaning datasets needed to support connectivity applications, such as utility, traffic, electrical and similar networking applications.

 

The Process
1. Feed a Point dataset to the tool along with a Line dataset.
2. Specify a tolerance.
3. Points will be moved to align to the nearest vertex in the Line dataset.

Shapefiles, Personal Geodatabases and File Geodatabases are all supported.

Attached in the compressed file there is a toolbox called "zzz SMJ Toolbox", A python script ConstructPointToLineConnectivity.py and a chm helpfile called ConstructPointToLineConnectivity.chm.

Convert Multibeam points to RGB Composite Image Convert Multibeam points to RGB Composite Image

hot!
Date added: 03/29/2010
Date modified: 05/04/2010
Filesize: Unknown
Downloads: 1767
There is 1 tool in zzzSMJToolbox.
- smjCreate3BandfromFC

 

Requirments:
- An Arcview License
- A valid spatial analyst license

The tool takes a multipoint featureclass, a file geodatabase and a cellsize as input.

The process:
- derive a raster from the multibeam z-enabled features
- convert the z surface into a HSV surface
- convert the HSV into RGB Bands
- Make a composite of the Red, Green and Blue bands

I have used the HSV and RGB conversion algorithm from http://en.wikipedia.org/wiki/HSL_and_HSV. Please feel free to let me know if there are any errors in the way I have scripted this conversion.

The RGB Has been fitted to fit the Temperature Color Ramp from ArcGIS and teh Rainbow Shadeset from ArcInfo Workstation.

Attached are 2 sample pdfs - one to deonstrate the process. The second to show the sample output in ArcScene.

  • «
  •  Start 
  •  Prev 
  •  1 
  •  2 
  •  3 
  •  4 
  •  5 
  •  Next 
  •  End 
  • »
Page 1 of 5
python-logo50
GeoData
logotagline50

spatialiq

email: info@spatiallogic.co.nz | phone: +64 9 636 2010 | mobile: +64 21 639 793

Follow Us