Check this box so that when graphic objects of like kind are created, they will be grouped together. For instance, all 2D contours would be in one group, and all 3D triangles would be in another.
Check this box in order for the mesh to be made of straight, open 3D polygons (going north-south and east-west). Uncheck it for the mesh to be made of square, closed 3D polygons.
Click this button to view or change DTM settings, such as contour interval. You will be returned to this dialog box after you finish with the DTM settings dialog box.
Unique name of the DTM. Initially the same as the name of the layer in which the data resides. If you change the data layer name, this DTM will be automatically deleted.
An 'x' will cause the mesh to consist of straight, open 3D polygons going east-west or north-south, instead of square, closed 3D polygons. Choosing open polygons can cut down tremendously on the number of graphic objects created.
Check this if you would like triangular 3D polygons to be created; this would make a visible terrain model (multi-faceted surface) when rendered. 3D polygons are not smoothable.
Check this if you would like 3D contours to be created. 3D contours are standard 3D polygons. They are not smoothable, but they retain the elevations which they represent.
The approximate number of columns of mesh 3D polygons that would be drawn with the mesh spacing entered above.
The approximate number of rows of mesh 3D polygons that would be drawn with the mesh spacing entered above.
This value will determine the width of the mesh squares and the spacing of the flow arrows.
Check here to display a mesh of square 3D polygons to represent the terrain. The width of each square will be set to the spacing value you enter to the right of this checkbox.
Check this if you would like 2D triangular polygons to be created and filled with a color which depends upon slope. Horizontal triangles will be filled with white. Triangle outlines will not appear, unless you check the previous checkbox ("Triangles").
All 2D triangles with slopes greater than this angle will be colored, if both of the previous checkboxes are checked.
Check this if you would like 2D triangular polygons to be created. They will each be outlined in black. They will each be filled with white, unless you check the next checkbox ("Color...").
Choose this if you would like all 2D contours that are created to be smoothed upon creation. Extra vertices are added, then the Bezier spline method is used. You could smooth later instead, by any available method; extra vertices would then not be added.
Check this if you want flow arrows to appear. They point in the approximate direction in which water would flow. The value entered for mesh spacing will determine the spacing of the arrows, even if no mesh is drawn.
Check this if you would like a closed 2D polygon to be drawn to represent the hull (boundary) of the DTM.
Check this if you would like contour labels to be drawn. These labels appear only with index 2D contours (such as every fifth contour), and only where the contours end at the hull (edge) of the DTM.
Check this if you would like 2D contours to be created.
Cancelling will return you to where you were before bringing up this dialog box; no changes will be applied or retained.
Clicking this button will apply any changes you've made. If you brought up this dialog box from within another dialog box, changes won't be applied unless and until you click Apply or OK in that other dialog box.
