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Windows

Landscape Surface Plot

One of the many ways that you can check your data. First thing to do is take a look at it. Specify your Landscape Topography in the GIS Control then make sure it looks right here.


The Landscape Surface Plot displays the current topographical settings for your model, expressed as a 3D surface plot.
  • If you have specified no topography in the Parameter View then a non-sloping 2D plane will be shown.
  • If you have specified a topographical landscape, but that it should be planar in the Parameter View, and have not associated a GIS data file with your Landscape Topography in the GIS Control, then you will see a sloping 2D plane defined by the other topographical settings (Metres above sea level and Percentage variation) in the same Parameter Category in the Parameter View.
  • If you have specified a topographical landscape that is not planar in the Parameter View but have not associated a GIS data file with your Landscape Topography in the GIS Control, then you will see one of the default landscapes being used. These can be selected from the Surface Topography window.
  • If you have specified a topographical landscape and have associated a GIS data file with your Landscape Topography in the GIS Control, then you will see that GIS data as your landscape.
  • If you have set and activated your Site Area Mask in the Site Area Mask window, then you will see your GIS data modified by your Site Area Mask into the shape of your site.


Controls

You have 4 sliding bar (scrolling) controls that, from left-to-right, operate zoom, perspective, rotation and elevation.
Above the sliding bars there are tickbox options for, from-the-top-down, displaying axes, setting the origin to sea level (SL) rather than the minimum landscape altitude data value, displaying grid lines rather than a solid surface, and using different colours for each of the columns of your model grid rather than the single solid colour.

Lastly, the topmost box allows you to stretch the landscape surface by applying a multiplier to the row Interpolation Intervals. For example, typing 2 in this box stretches the landscape surface to double it's length which can be useful when inspecting small-scale features in the landscape.


Technical Note

For the purposes of plotting the Landscape Surface Plot, the display grid is offset by half a cell in both the x and y planes compared to the model grids that store your GIS data, including your actual altitude GIS data. This is just a peculiarity of this 3D plot and does not effect the mapping of GIS data across your model grids, nor the relative referencing between those grids, i.e., co-ordinate x,y is the same location in all of your model grids throughout your model.
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