The GS+ format for interpolation output files (which is also the GS+ format for Map input files) contains a number of header records containing information about the file, followed by XYZ-style records for each interpolated points. Each data record contains fields for an x-coordinate value, a y-coordinate value (where present), an estimated z value for that x-y location, an estimation standard deviation for the estimated z-value, and the number of pairs used in the interpolation for that x-y location. Standard deviations are set to missing values for IDW and Conditional Simulation – Probabilities. Missing values are denoted by whatever value is specified in the Preferences window. Note that this format is different from the GS+ Input File format.
The following listing is for the first 12 coordinates for a standard GS+ krig output file.
GS+ Output: Block Kriging Interpolation File v7.0
Set: Field 54, Second Tier
Dimensions: 2; Interval source: Calculated
Interpolation interval (x; y): 1.3333; 1.3333
X-coor: m east
range: 0.00 - 80.00
Y-coor: m north
range: 0.00 - 80.00
Z-est: Pb
range: 0.151 - 0.813
Z-sd:
range: 0.0000 - 0.3655
Mean Z-estimate (sd): 0.391 (0.0186)
Valid N: 3721; Missing N: 0; Missing Value Indicator: -99
X-Coordinate Y-Coordinate Z-Estimate EstStdDev n
0.00 0.00 0.431 0.3608 16
0.00 1.33 0.458 0.3486 16
0.00 2.67 0.462 0.3329 16
0.00 4.00 0.466 0.3178 16
0.00 5.33 0.470 0.3034 16
0.00 6.67 0.474 0.2900 16
0.00 8.00 0.478 0.2778 16
0.00 9.33 0.487 0.2550 16
0.00 10.67 0.490 0.2443 16
0.00 12.00 0.492 0.2354 16
0.00 13.33 0.493 0.2293 16
0.00 14.67 0.499 0.2209 16