Free COLUMBUS Demo
COLUMBUS Network Adjustment Software
Featuring intuitive, spreadsheet-style
Data Management Grids
Stations, Observations and Datums
Free Demo Kit (version 188.8.131.52)
The demo software has all the functionality of the full release (up to 12 stations and no limit on the number of observations).
Readme.txt file includes comprehensive description of all new features. Sample network adjustment data files and reports are also included. The demo can be installed and run on Windows 7 (32 and 64 bit), Vista, Windows XP, Windows 2000 and Windows NT 4.0.
Download it now (approx 5.4 MB)
NEW FEATURES COLUMBUS Version 3.8
- Geoid09 support. State Plane, UTM, and TM adjustments (2D and 3D). Canadian HT2_0 geoid support. Simplified Options Library Manager User Interface (introduced 184.108.40.206 - 220.127.116.11).
- State Plane, UTM, TM, and Local Horizon Plane Traversing and Loop Closures (2D and 3D). Optional formatted reporting in the adjustment summary view (introduced 18.104.22.168).
- Trig leveling adjustments and traversing. Quick calculation tools for curvature, deflection of the vertical and refraction. One-step station and observation deletion utilities (introduced 22.214.171.124).
- Coordinate observations, adjusted State Plane coordinates and inverses, OPUS and coordinate file import (introduced 126.96.36.199 - 188.8.131.52).
- Sort all lists and reports by individual columns. Sorting by column allows you to more easily examine your results or categorize your selection list items. To sort a column, simply click on the column label. To reverse the order of the sorted column, click on the column label again. Our sorting algorithm is very fast on both small and large lists (introduced 184.108.40.206).
- Coordinate observations with full NEU or ENU covariance matrix. You may combine one or more coordinate observations for the same station and include them within a network adjustment. Alternatively, you can use this feature to calculate the weighted average coordinate for two or more NGS - OPUS solutions of the same station (introduced 220.127.116.11).
- Report aposteriori variance factor by observation type (az, zen, etc.). The aposteriori variance factor (also commonly referred to as the "variance of unit weight") is a statistical measure of how well your adjustment results matched your expected results, as given by your aprior observation standard deviations (introduced 18.104.22.168).
- ALTA/ACSM Positional Uncertainty testing. Support for both the semi-major axis of error ellipse and distance error version of this test. Preset ALTA fixed constant and distance ppm thresholds (0.070 U.S. feet + 50 ppm). Threshold values can be modified as needed for more/less stringent testing requirements (introduced 22.214.171.124).
- Maintain different sets of options for different project requirements. The Options Library Manager is a powerful tool that allows you to create different Options Sets. Any Options Set saved in the Library can be activated for the current project. For example, if you have different instrument requirements (centering errors, observation standard deviations, etc.), you can create a unique Options Set for each instrument. Likewise, if you have different State Plane Zone requirements, simply create a unique Options Set for each and Check Out the applicable Options Set prior to generating your State Plane coordinates (introduced 126.96.36.199).
- Powerful 1D, 2D and 3D point-and-click geodetic traversing (and loop closure computations) with redundant observations. You are no longer required to group your observations into sets in order to run a traverse. You can now also include redundant observations (between station pairs) as part of the forward computations (introduced 188.8.131.52).
- Simplified usage of Local 2D NE and 3D NE Elevation adjustments. Either on-line or through an input file, enter your Local NE (Elevation for 3D) coordinates and observations, then adjust as you would a geodetic network (introduced 184.108.40.206).
- Network Adjustment
- 1D, 2D, 3D Geodetic network adjustment combining GPS and terrestrial observations.
- 2D Local North/East and 3D Local North/East/Elevation adjustment. Sample input data file.
- Comprehensive error analysis, including distance errors, error ellipses, error circles, error ellipsoids, observation redundancy, and much more.
- Automated combinatorial approach for finding best network solutions when redundant control points are available.
- Automated search for, and removal of, outlier observations.
- Adjustment Capacity/supported network size: Fully tested on simulated networks with up to 45,000 stations and 450,000 observations (using a programmatically-generated network input file).
- Adjustment final inverse data available in text form for further evaluation use.
- Network Design
- "Point-and-click" 1D, 2D, and 3D network design.
- Select stations, then select the observation types (and their expected standard deviation) between these stations.
- Provides complete statistical results to help you refine your proposed network in order to achieve the accuracies required for the project.
- 1D, 2D, 3D traversing and inversing from the Main View or the Adjusted View (using adjusted coordinate data).
- "Point-and-click" route setup.
- Route modification or setup through the route selection dialog.
- Use redundant observations between station pairs.
- Traverse through same point(s) any number of times (for example., a figure eight-type route).
- Coordinate Transformation
- Input Files
- Support for observation set record types: azimuth/zenith/chord, direction/zenith/chord, horizontal angle/zenith/chord, GPS dX, dY, dZ, local horizon dNorth, dEast, dUp, etc.
- Support for individual observation record types: azimuths, directions, horizontal angles, bearings, zenith angles, chord distances, horizontal distances, height differences.
- Support for Options settings in a user-editable format.
- Comment blocks for disabling large chunks of the file.
- Include file support: You can include all your input files from within one master file.
- Support for Network settings (fixed/free/constrained stations, network observations, and more) in a user-editable format.
- Observation description field.
- Observation disabling flags.
- Instrument/Target Centering error corrections support.
- Chord distance and horizontal distance PPM corrections support.
- Single-line file entry format.
- Fast loading of large networks.
- Over 50 detailed, formatted reports. Reports can be appended to one another or written to separate output files.
- Create comma-delimited text (.*csv) files for every COLUMBUS report. Compressed format; readily imported by third-party applications such as Microsoft Excel®.
- All Results views designed for more efficient analysis; "smart views" let you select column widths and remember these settings for future sessions.
- Direct File Import
- Third-Party File Conversion
- And More...
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Network Adjustment and Coordinate Transformation
Software Solutions Since 1990
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