Area of Concern Boundary is a secondary sample design that places new samples in locations along the decision boundary.
This sample design is available for SADA files with sampled data or with Geobayesian data.
These are the steps that display in the Steps Window when this sample design is selected during the step Set sampling parameters. Click on the links below for more details about the following steps. Note: With Geobayesian data, SADA will automatically change the interpolant to kriging and not allow the user to alter this.
1. See the data, Draw/Edit Prior
2. Set up the site
3. Set GIS overlays
4. Set sampling parameters
5. Set update data (for Geobayesian files only)
6. Set grid specs (not available for Geobayesian)
7. Interpolation methods (not available for Geobayesian)
8. Correlation modeling (If indicator kriging or ordinary kriging )
9. Search neighborhood
10. Show the results
11. Import sampled data
12. Format picture
14. Add to results gallery
When Area of Concern Boundary is selected during the Set sampling parameters step, the Parameters Window changes to look like the following:
See Design Core samples or Show Ghost Image for an explanation of the core vs. single point sampling options.
Under Number of Samples, only you pick is available. Enter the number of samples in the space provided.
To use the secondary minimum distance constraint, enter a value next to Separate by at least.
Click on the box next to Simulated Sampling for simulated sampling.
Under Tie Break Options, select the appropriate tie break method.
Press Show the Results on the Steps Window and SADA will display the sample locations in the Graphics Window. If there are polygons, new samples will only be placed inside the active polygons.
To view the actual coordinates of the new sample points export the information to a comma delimited excel file by using the Output to File toolbar button in main form of SADA.