Surface group objects are created by the surf or mesh functions, but are equally one of the handles returned by the surfc or meshc functions. The surface group is of the type surface.
The properties of the surface group are
edgecolorfacecolorThe RGB color or color name of the edges or faces of the surface. See Colors.
linewidthlinestyleThe line width and style of the lines on the surface. See Line Styles.
markermarkeredgecolormarkerfacecolormarkersizeThe line and fill color of the markers on the surface. See Colors.
xdataydatazdatacdataThe original x, y, z and c data.
xdatasourceydatasourcezdatasourcecdatasourceData source variables.
© 1996–2018 John W. Eaton
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https://octave.org/doc/interpreter/Surface-Group.html