![]() Every contour map is unique! Some are jagged, others are almost perfectly symmetrical. We enjoy viewing the black and white contour lines that are generated from each pile measured just as much as the color images. It is wonderful to view sunny stockpile images with blue skies, especially when the weather is dreary here in the Pacific Northwest. Our team views color images from stockpiles that have been measured from exotic locations such as Australia, India, South America, Chile, New Zealand and more. Stockpile Reports has customers located all over the world. Our stockpile reports also feature a black and white topographical map of the pile, rendered using contour lines. In this quick video, you can see me removing a hill from my grid and adjusting the surrounding contours.Fascinating Contour Lines and How They WorkĪuthor: Stockpile Reports Every stockpile measured by our customers generates a Stockpile Report with the stockpile’s photo and measurement video. Z Value: displays the Z value for the active grid node (select and eyedropper tools) or the Z value you wish to apply to the grid nodes (brush tool).Pressure levels are between 1 and 100 where 1 has the minimum effect with each click or drag and 100 applies the maximum tool effect. Pressure: controls the speed at which tool effects are applied as the brush moves. ![]() ![]() Density levels are between 1 and 100 where 1 has very “feathered” changes and 100 applies the tool to all nodes within the brush equally. Density: controls the weighting of the tool effect radially from the center of the brush.The larger the size, the more grid nodes you will change at once. Brush Size: changes the size of the tool used to edit the grid.When you select a tool, you can also change the tool settings in the tools options bar at the top of the grid editor window for more control over your grid changes: Pull Up: increases the z-values within an area.Push Down: reduces the z-values within an area.Smooth: create a continuous transition from one z-value to the next to remove sharp edges along contour lines.Warp: distort or transform the z-values to create a new shape of the contour lines.Brush: apply the same z-values to an area by painting the area with the brush.Here is the list of the grid editing tools: Open the grid you wish to edit, select a tool, and use your mouse to edit the grid directly on your screen. Surfer’s grid editing tools are similar to the drawing tools found in Adobe’s Photoshop or other image editing programs. Edit individual grid nodes or apply brush tools to change multiple grid nodes at once. The dialog, as you can see below, displays the individual nodes and will also display the contour lines along with the color fill, if you so choose. ![]() Surfer’s grid editor window makes it very easy to change grid node values and see how the change affects the contour map. In these situations, you can edit the Z-values in the underlying grid for a more accurate representation of the mapped area. Other times, the interpolation method used may not work well with your dataset and omit important information. Why edit contour lines? There may be times when your dataset doesn’t contain enough detail of the area you’re mapping. It is by editing the Z-values in the underlying grid file that one can edit the lines of the contour map. The contour map is then created from the grid file which contains X, Y, and Z values. When creating a contour map in Surfer from XYZ data points, the raw data is first interpolated, and a grid file is created. A contour line connects points of equal elevation, and the distance between contour lines represents the relative slope of the surface.ģD surface map and 2D contour map displayed in Surfer. The ability to edit contour lines is one of Surfer’s most highly requested features, and we are pleased to report this feature is available in the latest release!Ī contour map is a two-dimensional representation of a surface where the surface is represented by contour lines.
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