Standard grid is a 2d initial, systematic aligned grid design that relies on a user-defined grid definition and depth classification. Sample points are created in the center of each grid block.
This design provides better spatial representation than a random placement and supports a geospatial analysis. The regularized pattern, however, may miss some features such as piping or ditches and the lack of truly random design may have an unknown impact on determining precision of simple statistical values or tests.
Availability
This sample design is available for all SADA files.
Steps
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
9. Add to results gallery (not available for empty SADA files)
Design-specific Parameters
When Standard 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.