Standard Unaligned Grid Sample Design

Standard Unaligned grid is a 2d initial, systematic unaligned sample design that relies on a user-defined grid definition and depth classification. Instead of being in the center, sample points are created in random locations within each grid block.

This design can help overcome the problem of missing features by randomizing within the cell. It increases the random element of the design while enforcing a regular distribution across the site. The lack of truly random design, however, may have an unknown impact on determining precision of simple statistical values or tests.


This sample design is available for all SADA files.


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.

1. See the data, Draw/Edit Prior, Display empty plot

2. Set up the site

3. Set GIS overlays

4. Set sampling parameters

5. Show the results

6. Import sampled data

7. Format picture

8. Auto-document

9. Add to results gallery (not available for empty SADA files)

Design-specific Parameters

When Standard Unaligned Grid 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.

If there are polygons, new samples will only be placed inside the active polygons.

Under Sample Grid, select whether the design the grid based on number of blocks or size of blocks. Then, enter the applicable values in the Easting and Northing columns. (Note: SADA enters default values for these columns automatically.)

Press Show the Results on the Steps Window and SADA will display the sample locations in the Graphics Window.


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.