x, y were backwards in the plot

cookbook/gravmag_transform_deriv.py

@@ -33,40 +33,40 @@
 mpl.subplot(2, 3, 1)
 mpl.title("x deriv (contour) + true (color map)")
 mpl.axis('scaled')
-levels = mpl.contourf(xp, yp, gxz_true, shape, 12)
+levels = mpl.contourf(yp, xp, gxz_true, shape, 12)
 mpl.colorbar(shrink=0.7)
-mpl.contour(xp, yp, gxz, shape, 12, color='k')
+mpl.contour(yp, xp, gxz, shape, 12, color='k')
 mpl.m2km()
 mpl.subplot(2, 3, 2)
 mpl.title("y deriv (contour) + true (color map)")
 mpl.axis('scaled')
-levels = mpl.contourf(xp, yp, gyz_true, shape, 12)
+levels = mpl.contourf(yp, xp, gyz_true, shape, 12)
 mpl.colorbar(shrink=0.7)
-mpl.contour(xp, yp, gyz, shape, 12, color='k')
+mpl.contour(yp, xp, gyz, shape, 12, color='k')
 mpl.m2km()
 mpl.subplot(2, 3, 3)
 mpl.title("z deriv (contour) + true (color map)")
 mpl.axis('scaled')
-levels = mpl.contourf(xp, yp, gzz_true, shape, 8)
+levels = mpl.contourf(yp, xp, gzz_true, shape, 8)
 mpl.colorbar(shrink=0.7)
-mpl.contour(xp, yp, gzz, shape, levels, color='k')
+mpl.contour(yp, xp, gzz, shape, levels, color='k')
 mpl.m2km()
 mpl.subplot(2, 3, 4)
 mpl.title("Difference x deriv")
 mpl.axis('scaled')
-mpl.pcolor(xp, yp, (gxz_true - gxz), shape)
+mpl.pcolor(yp, xp, (gxz_true - gxz), shape)
 mpl.colorbar(shrink=0.7)
 mpl.m2km()
 mpl.subplot(2, 3, 5)
 mpl.title("Difference y deriv")
 mpl.axis('scaled')
-mpl.pcolor(xp, yp, (gyz_true - gyz), shape)
+mpl.pcolor(yp, xp, (gyz_true - gyz), shape)
 mpl.colorbar(shrink=0.7)
 mpl.m2km()
 mpl.subplot(2, 3, 6)
 mpl.title("Difference z deriv")
 mpl.axis('scaled')
-mpl.pcolor(xp, yp, (gzz_true - gzz), shape)
+mpl.pcolor(yp, xp, (gzz_true - gzz), shape)
 mpl.colorbar(shrink=0.7)
 mpl.m2km()
 mpl.show()