scat_to_unif The scat_to_unif module is used to convert scattered sample data into a three-dimensional uniform field. Also, scat_to_unif can be used to take an existing grid (for example a UCD file) and convert it to a uniform field. scat_to_unif converts a field of non-uniformly spaced points into a uniform field which can be used with many of EVS’s filter and mapper modules. “Scattered sample data " means that there are disconnected nodes in space. An example would be geology or analyte (e.g. chemistry) data where the coordinates are the x, y, and elevation of a measured parameter. The data is “scattered” because there isn’t data for every x/y/elevation of interest.
merge_fences The merge_fences module is used to merge the output from multiple krig_fence modules into one data set (i.e., to merge cross sections into a fence diagram). This is useful for performing uniform data manipulation procedures on fence data from several krig_fence outputs. For example, if several krig_fence modules are used, they should all pass through a merge_fences module before being passed to explode and scale. Therefore, all fences will be exploded and scaled the same amount and only one dialog box is needed to control all fences. merge_fences should always be used when more than one krig_fence module is used.
project_field General Module Function The project_field module is used to project the coordinates in any field, from one coordinate system to another. Module Control Panel The control panel for project_field is shown in the figure above. Each coordinate system is divided into either Geographic or Projected coordinate systems. The coordinate system types are navigated by selecting the appropriate system type in the far left window. When a general coordinate system has been selected a specific coordinate system can be selected from the center window. If there are any details regarding the selected specific coordinate system, they will appear in the text window on the right. A specific coordinate system must be selected both to project from and to project to as in the picture below.
geologic_surfmap This module is deprecated and replaced by project onto surface. geologic_surfmap provides a mechanism to drape lines onto Geologic surfaces. It compares to project onto surface, but lines are not subsetted to match the size of the cells of the surface on which the lines are draped. In other words, only the endpoints of each line segment are draped.
time_field The time_field module allows you to extract a field (grid with data) from a set of time-based fields. The time for the extracted field can be any time between the start and end of the set of fields. It will interpolate between adjacent known times.
video_safe_area The video_safe_area module is used when creating an animation for DVD or Video. It displays the areas that are usable for both text and animation purposes for several standard video formats. This allows you to properly setup your animation in order to get the best possible output on multiple television sets.
advector The advector module combines streamlines capability and a tool for sequential positioning of glyphs along the streamlines trajectory to simulate advection of weightless particles through a vector field (for example, a fluid flow simulation such as modflow). The result is an animation of particle motion, with the particles represented as any EVS geometry (such as a jet or a sphere). The glyphs can scale, deflect or deform according to the velocity vector it passes. At least one of the nodal data components input to advector must be a vector. The direction of travel of streamlines can be specified to be forwards (toward high vector magnitudes) or backwards (toward low vector magnitudes) with respect to the vector field. The input glyphs travel along streamlines (not necessarily visible in the viewer) which are produced by integrating a velocity field using the Runge-Kutte method of specified order with adaptive time steps.
modpath_advector The modpath_advector module combines MODPATH capability and a tool for sequential positioning of glyphs along the MODPATH lines trajectory to simulate advection of weightless particles through a vector field. The result is an animation of particle motion, with the particles represented as any EVS geometry (such as a jet or a sphere). The glyphs can scale, deflect or deform according to the velocity vector it passes. The direction of travel of streamlines can be specified to be forwards (toward high vector magnitudes) or backwards (toward low vector magnitudes) with respect to the vector field. The input glyphs travel along streamlines (not necessarily visible in the viewer) which are produced by integrating a velocity field using the Runge-Kutte method of specified order with adaptive time steps.
read symbols The read symbols module creates symbolic representations of different borehole identifiers based on a set of user defined parameters. The symbols are displayed at the top of the each borehole based on its x,y & z coordinates. A sample file with 48 predefined symbols is included, but it can be customized to produce special symbols.
create_spheroid This module is deprecated and replaced by place_glyph The create_spheroid module produces a 2D circular disc or 3D spheroidal or ellipsoidal grid that can be used for any purpose, however the primary application is as starting points for 3d streamlines or advector. Module Input Ports Input Field [Field] Accepts a field to extract its extent Module Output Ports
advect_surface The advect_surface module combines surface streamlines capability and a tool for sequential positioning of glyphs along the streamlines trajectory to simulate advection of particles down a surface. The result is an animation of particle motion, with the particles represented as any EVS geometry (such as a jet or a sphere). The glyphs can scale, deflect or deform according to the velocity vector. The direction of travel of streamlines can be specified to be downhill or uphill (for the slope case). The input glyphs travel along streamlines (not necessarily visible in the viewer) which are produced by integrating a velocity field using the Runge-Kutte method of specified order with adaptive time steps.
fence_geology The fence_geology module uses data in specially formatted .geo files to model the surfaces of geologic layers in vertical planes, or cross sections. Fence Geology essentially creates layers of quadrilateral (4 node) elements (in a vertical plane) in which each node (and element) is assigned to an individual geologic layer. The output of fence_geology is a data field, consisting of a 2D line with each layers elevation as nodal data elements, that can be sent to the krig_fence and horizons to 3d modules where the quadrilateral elements are connected to the element nodes in adjacent geologic surfaces to create layers along the fence.
file_output The file_output module creates a formatted string based upon the values passed to it. This string is then written to the selected ascii text file. Certain modules such as 3d estimation, krig_2d, and krig_fence output a formatted string for just this purpose.
adaptive_indicator_krig adaptive_indicator_krig is an alternative geologic modeling concept that uses geostatistics to assign each cell’s lithologic material as defined in a pregeology (.pgf) file, to cells in a 3D volumetric grid. There are two methods of lithology assignment: Nearest Neighbor is a quick method that merely finds the nearest lithology sample interval among all of your data and assigns that material. It is very fast, but generally should not be used for your final work. Kriging provides the rigorous probabilistic approach to geologic indicator kriging. The probability for each material is computed for each cell center of your grid. The material with the highest probability is assigned to the cell. All of the individual material probabilities are provided as additional cell data components. This will allow you to identify regions where the material assignment is somewhat ambiguous. Needless to say, this approach is much slower (especially with many materials), but often yields superior results and interesting insights. adaptive_indicator_krig is an extension of the technology in lithologic modeling for several reasons:
krig_fence krig_fence models parameter distributions within domains defined by the boundaries of the input data in 3D Fence sections which can “snake” around in the x-y plane and are parallel to the z-axis. krig_fence can also receive the geologic system modeled by Fence Geology. It creates a quadrilateral finite-element grid with kriged nodal values of any scalar property and its kriged confidence level, and outputs a geometry whose elements can be rendered to view the color scaled parameter distribution on the element surfaces. krig_fence provides several convenient options for pre- and post-processing the input parameter values, and allows the user to consider anisotropy in the medium containing the property.
fence_geology_map The fence_geology_map module creates 3-dimensional fence diagram from the 1-dimensional line contours which follow your geology produced by fence_geology, to allow visualizations of the geologic layering of a system. It accomplishes this by creating a user specified distribution of nodes in the Z dimension between the top and bottom lines defining each geologic layer. The number of nodes specified for the Z Resolution may be distributed (proportionately) over the geologic layers in a manner that is approximately proportional to the fractional thickness of each layer relative to the total thickness of the geologic domain. In this case, at least three layers of nodes (2 layers of elements) will be placed in each geologic layer.
application_notes The application_notes has been deprecated and replaced by the Annotation’s “Notes”
texture_colors This is a deprecated module texture_colors functionality has been incorporated into all modules. On the Home tab, you have the Render Method selector where you can choose to use Vertex RGB coloring or Textures.
texture_wave The texture_wave module utilizes transparency and texture mapping similar to texture_colors and illuminated_lines technology to create an animated effect. However, unlike illuminated_lines, this module works with both OpenGL and Software Rendering. texture_wave has a single input port that accepts the grid with nodal data that you want to color with this technique. This would normally be tubes or streamribbons.
illuminated_lines Display of Illuminated Lines using texture mapped illumination model on polylines with line halo and animation effects. Prerequisites This module requires OpenGL rendering to be selected. This module utilizes special OpenGL calls to implement the illuminated line technique. If this module is used with another renderer, such as the software renderer or the output_images module (not set to Automatic), lines will be drawn in the default mode with illuminated line features disabled.