For your convenience, the 1D, 2D and 3D files on the Sample Files page can be loaded into a test project.
- Click the green Start Columbus button.
- Click the New button to create a new project.
- On the Data page, select a sample file from the Select Sample File drop-down list. The displayed stations and observations can be modified.
- Set the Preference Settings and Adjust Settings as described.
- On the Adjust page, click the Start button. The Adjustment Output displays as the adjustment progresses.
Alternatively, after creating a new project, on the Adjust File page, select a sample file from the Select Sample File drop-down list. The adjustment starts immediately.
Columbus is organized into six pages:
A project is a stand-alone set of data consisting of Stations, Observations and Preference Settings. Use this page to create, copy or delete a project.
- You must select a project before navigating to a different page.
- Selecting a project loads all of its data from the cloud.
Note: If you want to use the Adjust File option, simply create a dummy project and select it to be active.
There are three ways to import data into Columbus:
- Import data from a Columbus or third-party file.
- Enter data directly within the data grids.
- Any combination of #1 and #2.
Note: Latitude and longitude must always be provided in DMS (degree, minute, second) units. For example:
N 40-10-15.123456 must be entered as: 40.1015123456
S 40-10-15.123456 must be entered as: -40.1015123456 (negative)
E 105-3040111111 must be entered as: 105.3040111111
W 105-3040111111 must be entered as: -105.3040111111 (negative)
Adjust and Adjust File
There are two ways to perform network adjustments within Columbus, each with its own advantages:
- Adjust: Based on the active project.
- Adjust File: Based on a file.
This method uses data that has been imported into Columbus or loaded from a current project stored in the cloud. Prior to adjustment, you can modify preference settings on the Preferences page and define the network type on the Adjust page. After adjustment, you will have the opportunity to save the adjusted coordinates and all preference settings into the cloud for future retrieval.
This method assumes you have created a network adjustment data file. When you select the file, the adjustment immediately runs and reports the results.
Note: These results cannot be used anywhere else within Columbus, and they cannot be stored in the cloud.
Everything that defines the adjustment (datum, stations, observations and configuration settings) must be defined in the file. Unless you have modified the file, every time you adjust this file the results will be the same.
This is where you can perform a variety of tasks, including Geoid Modeling, Project Export, Coordinate Export, etc. Additional tools are planned for future updates to Columbus.
Preference settings are applied to a project during processing and are stored with your project in the cloud. Most preferences pertain to network adjustment.
- Changes to preferences can be made through the user interface.
- Importing files or using Adjust File will not alter the current project preferences.
- Preference settings are ignored when using the Adjust File feature.