You mean contour one grid? Like in
using GMT
G = GMT.peaks(N=8) # Create a dumb very small grid se we can see all of its numbers
Gridline node registration used
x_min: 0.0 x_max :10.0 x_inc :2.0 n_columns :6
y_min: 0.0 y_max :10.0 y_inc :2.0 n_rows :6
z_min: 0.0 z_max :10.0
8×8 Matrix{Float32}:
6.74662f-5 0.00234345 -0.00289526 -0.156239 -0.234643 -0.0561168 -0.0021941 -5.86418f-6
0.000709284 0.0252743 -0.100085 -2.42985 -3.59033 -0.82773 -0.0259816 0.000166233
-0.00160873 0.0259868 0.792868 -0.891183 -4.8579 -0.559861 0.151032 0.00677258
-0.0228549 -0.578283 -0.834896 3.62408 0.439527 2.98756 0.821138 0.028167
-0.026329 -0.753474 -2.56385 0.810568 0.15759 3.00589 0.800088 0.0273207
-0.00537586 -0.112819 0.619229 5.63665 5.59131 1.97303 0.25099 0.00707602
0.000235204 0.0367531 0.840585 3.81141 3.81001 0.912933 0.0560706 0.000895326
3.29888f-5 0.00292144 0.0569759 0.249575 0.24956 0.0578584 0.00315682 4.10297f-5
C = makecpt(T=(-7,9,2));
contourf(G, C, show=true)
(more here)
