This module displays the coordinate axis of the 3D graphic display.

This is intended as a source code example to show how to allocate and manage a simple UCD output port structure, from within a free-running AVS coroutine. This simulates time varying data on a 2D quadrilateral mesh. It has no parameters or input ports, for simplicity all values are hand-coded. The UCD output structure contains a 2D mesh of quadrilateral cells, with connected shared nodes. The geometric and connectivity info is only built the first time, then only the values change from each time step.

This module allows users to extract data from AIRS AFS (AIRS Facility System) files. The AIRS AFS format are refered to User's Guide For the Urban Airshed Model, EPA-450/4-90-007D. Users may read through the very begining of the c codes provided to get an idea how the data is constructed. This is one of a suite of modules we used to plot the emission data for the state of North Carolina. This group of modules allows displaying points, lines and polygons over a map of the United States. The module suite is stored as a group in a compressed tar file at the International AVS Center, with some sample networks and datasets included. You may find it easier to access the modules this way. The compressed tar file is approximately 1.2MB in size, and can be found via anonymous ftp to avs.ncsc.org, in ftp/avs/Data/avs_dataWang_GIS_mods.tar.Z.

This module allows users to extract data from AIRS AMS (AIRS Area and Mobile Subsystem) files. The AIRS AMS format are refered to User's Guide For the Urban Airshed Model, EPA-450/4-90-007D. Users may read through the very begining of the C codes provided to get an idea how the data is constructed. This is one of a suite of modules we used to plot the emission data for the state of North Carolina. This group of modules allows displaying points, lines and polygons over a map of the United States. The module suite is stored as a group in a compressed tar file at the International AVS Center, with some sample networks and datasets included. You may find it easier to access the modules this way. The compressed tar file is approximately 1.2MB in size, and can be found via anonymous ftp to avs.ncsc.org, in ftp/avs/Data/avs_dataWang_GIS_mods.tar.Z.

Unlike the AVS module, "animated integer", this animator co-routine keeps up with the range of the values available. It also allows the user to set a delta value for going forward (positive) or backward (negative). Additionally, the user can advance by single steps through data or continuously. When the end of the range is reached, the animator will wrap around the end of the range to the opposite end by delta. A second set of variables allows the synchronous control of two viewing windows. Output from the animator will cease for "Pause Seconds" # after each previous output. The MCNC Environmental Programs Group has created this module as part of a suite of AVS demo modules, networks, and sample data sets to demonstrate the functionality of its visualization prototype for an Environmental Decision Support System (EDSS). You can download these modules individually from the IAC using anonymous ftp to the appropriate directories /avs_modules at avs.ncsc.org. If you would like to download the entire suite of modules, networks, and sample datasets at the same time, the IAC recommends that you use anonymous ftp to grab the following file from avs.ncsc.org ftp/avs/Data/avs_dataMCNC_Env_Pgms/MCNC_Env_Pgms.tar.Z This contains all source code to all local and remote modules, as well as all of the sample datasets, networks, documentation, installation, and usage notes.

The ARCMAP module creates an AVS geometry by reading input from an ARCinfo gen file. The gen file structure is that of ARC segment number, a list of x-y coordinates of the segment polygon, and an 'END' statement. The MCNC Environmental Programs Group has created this module as part of a suite of AVS demo modules, networks, and sample data sets to demonstrate the functionality of its visualization prototype for an Environmental Decision Support System (EDSS). You can download these modules individually from the IAC using anonymous ftp to the appropriate directories /avs_modules at avs.ncsc.org. If you would like to download the entire suite of modules, networks, and sample datasets at the same time, the IAC recommends that you use anonymous ftp to grab the following file from avs.ncsc.org ftp/avs/Data/avs_dataMCNC_Env_Pgms/MCNC_Env_Pgms.tar.Z This contains all source code to all local and remote modules, as well as all of the sample datasets, networks, documentation, installation, and usage notes.

The ApplMenu module reads a menu description file and creates an AVS menu that conforms to this description. It also controls this menu and issues the appropriate CLI commands when various menu choices are made by a user.

This module is both a reader and a mapper. It reads ASCII Biograph protein files, and generates a geometric object for the geometry viewer. It has advanced modes, such as creating a spline ribbon representation of the backbone chain.

This module is a source example of how to write a free-running asynchronous coroutine that provides data to AVS on the output port when data is ready. In its present form, it free-runs, that is continually sends data to AVS as fast as it can be processed. The project specific version of this had external calls to obtain data from a data acquisition instrument.

This module was built due to the need to be able to generate a constant image to input as bias or as initial state in the module aCNN. The module accept as input a field, tipically the image, and assumig the dimensions of this field gives as output a field 2-D scalar byte of a constant value.

This module reads the graphical output files generated by DMol from Biosym (see REFERENCES included in documentation), and generates an AVS field. This field can then be manipulated to display an isosurface of the electronic charge or use slicers to view the data.

This simple module provides rotation, scale, and translation to any object in the geometry viewer scene, with separate controls in the form of dial parameters. The module connects in PARALLEL with other geometric objects to the geometry viewer. It operates on the named object in the scene.

This simple module provides rotation, scale, and translation to any object in the geometry viewer scene, with separate controls in the form of dial parameters. The module connects in PARALLEL with other geometric inputs to the geometry viewer. It operates on the named object in the scene.

This is an example module to show how one can go from cylindrical or spherical to cartesian coordinates. This has been written for specific datasets, but it should serve the purpose. Anyways, the trick is to calculate the points array properly in order to feed field2mesh, in most cases. See also - Read.

This module allows users to run a vi editor on a remote machine inside AVS. The user selects the file to edit and inputs the IP number for the local machine.

The Edit String module puts up a LONG dialog box, allows typing of any string, then with either "OK" or "CANCEL" controls, will output this string to the output port of the module. The next time the "Edit" button is pushed, the dialog box reappears, with the old string, which can be edited. This module is for long expressions, lists of ints, etc, where the normal string type_in widget is too small. The dialog box comes up with nicer colours than the default grey.

This module reads an ASCII file consisting of lists of x & y points and constructs a 3-D geometry object using the points in the file as vertices. It uses the value specified by the user in the depth dial for the depth of the object.

FIND DATA AND MAP -- locates data and map based on user choice from a DATA LIST. The MCNC Environmental Programs Group has created this module as part of a suite of AVS demo modules, networks, and sample data sets to demonstrate the functionality of its visualization prototype for an Environmental Decision Support System (EDSS). You can download these modules individually from the IAC using anonymous ftp to the appropriate directories /avs_modules at avs.ncsc.org. If you would like to download the entire suite of modules, networks, and sample datasets at the same time, the IAC recommends that you use anonymous ftp to grab the following file from avs.ncsc.org ftp/avs/Data/avs_dataMCNC_Env_Pgms/MCNC_Env_Pgms.tar.Z This contains all source code to all local and remote modules, as well as all of the sample datasets, networks, documentation, installation, and usage notes.

FIND MAP -- locates a map based on user choice from a MAP LIST. The MCNC Environmental Programs Group has created this module as part of a suite of AVS demo modules, networks, and sample data sets to demonstrate the functionality of its visualization prototype for an Environmental Decision Support System (EDSS). You can download these modules individually from the IAC using anonymous ftp to the appropriate directories /avs_modules at avs.ncsc.org. If you would like to download the entire suite of modules, networks, and sample datasets at the same time, the IAC recommends that you use anonymous ftp to grab the following file from avs.ncsc.org - ftp/avs/Data/avs_dataMCNC_Env_Pgms/MCNC_Env_Pgms.tar.Z This contains all source code to all local and remote modules, as well as all of the sample datasets, networks, documentation, installation, and usage notes.

This DATA INPUT module reads a FITS (Flexible Image Transport System) file into a field, and optionally to a text window. For primary data or image extensions, the number of dimensions is derived from the NAXIS keyword. For Ascii and binary tables, the number of dimensions may be 1 or 2, depending on a parameter. Random Groups do not seem to be supported (I did'nt see any example of them). Version 2 has code to port to the IBM platform.

GET MODEL MAP -- generates map and crop information based on selected map. The MCNC Environmental Programs Group has created this module as part of a suite of AVS demo modules, networks, and sample data sets to demonstrate the functionality of its visualization prototype for an Environmental Decision Support System (EDSS). You can download these modules individually from the IAC using anonymous ftp to the appropriate directories /avs_modules at avs.ncsc.org. If you would like to download the entire suite of modules, networks, and sample datasets at the same time, the IAC recommends that you use anonymous ftp to grab the following file from avs.ncsc.org ftp/avs/Data/avs_dataMCNC_Env_Pgms/MCNC_Env_Pgms.tar.Z This contains all source code to all local and remote modules, as well as all of the sample datasets, networks, documentation, installation, and usage notes.

This module generates an n-dimensional Gaussian field. You can download these modules individually from the IAC using anonymous ftp to the appropriate directories at avs.ncsc.org. If you would like to download the entire suite of modules, networks, and sample datasets at the same time, the IAC recommends that you use anonymous ftp to grab the following file from ftp.iavsc.org: /pub/AVS5/Data/avs_data/MCNC_Env_Pgms/MCNC_Env_Pgms.tar.Z This contains all source code to all local and remote modules, as well as all of the sample datasets, networks, documentation, installation, and usage notes.

The module GenMask is an input module created to generate the templates, both the control and the feedback template, to apply to the image when the image proc essing is executing. As a input module GenMask does not have any input and it gives as output a field 2-D scalar float that is a 2-dimensional array of float. Since the module aCNN works with templates of dimension 3x3 even the output array of GenMask will be 3x3.

Generate label creates a geom object describing a label object. This label is a title, that is it has a fixed position on the screen, regardless of viewpoint transformations. This module provides a portion of the functionality of labels in the geometry viewer, but adds the ability to generate labels automatically. This is useful for putting up frame or time-step numbers.

This module allows users to read in sorted ASCII terrain data and generate an 2-D irregular field. Together with the "Draw Map" module on the ftp site, users can create a 2-D terrain plot over the political boundary map. Sample data for this module can be found via anonymous ftp to avs.ncsc.org, in ftp/avs/Data/avs_dataGet_Terrain_Data/dma.dat.

Graph slider can shift the range in x axis in graph viewer. By default, you can specify the max and min value respectively. You can set the range and min value in this module so that if you change only min value the graph slides. This module has no input and output ports. That means this module accesses CLI. This module is very simple and short code. You can use as a refernce for CLI access.

The Image Sequencer module is used to read a series of images that have been previously saved to disk and output them as AVS image data. This can be very useful for displaying a series of images, recording them to video, or compositing or filtering a series of images. The images can be in any of the formats supported by the Image Sequencer. Image formats currently supported are AVS image format, MIFF, RLE, and RLA/B.

This module allows users to extract data from link base mobile emission files. The link base emission format are refered to User's Guide For the Urban Airshed Model, EPA-450/4-90-007D. Users may read through the very begining of the C codes provided to get an idea how the data is constructed. This is one of a suite of modules we used to plot the emission data for the state of North Carolina. This group of modules allows displaying points, lines and polygons over a map of the United States. The module suite is stored as a group in a compressed tar file at the International AVS Center, with some sample networks and datasets included. You may find it easier to access the modules this way. The compressed tar file is approximately 1.2MB in size, and can be found via anonymous ftp to avs.ncsc.org, in ftp/avs/Data/avs_dataWang_GIS_mods.tar.Z.

The Label Axis module generates axes with tic marks and labels in 3D space. The axis can be generated with tic marks and tic labels along each axis. This module very simular to the supported module generate axis but porvides more flexibility and funcionality to the user.

Life is an implementation of the "Life" problem. This is an algorithm where "neighbors", or cells, propagate or die, based on the proximity of other living neighbors. In this case, a living neighbor is represented by a simulation of a processor in the massively parrallel Wavetracer being "turned on". The thoughts behind the algorithm are - If there are too many neighbors, a cell will die due to overcrowding. If there are too few neighbors, a cell will die due to lack of resources. It is meant to be used with the Life_WT AVS module, which is a parrallel implementation of Life. As the number of processors increases, the performance of Life_WT greatly supercedes that of Life, due to the benefits of the Wavetracer's multiple processors operating in parrallel. The output from this coroutine module is an AVS image, which can be sent to the display_image module for viewing as the computation progresses. The user sees a visualization of the processors that are "alive" at that moment in the computation.

Life_WT is an implementation of the "Life" problem. This is an algorithm where "neighbors", or cells, propagate or die, based on the proximity of other living neighbors. In this case, a living neighbor is represented by a processor in the massively parrallel Wavetracer being "turned on". The thoughts behind the algorithm are If there are too many neighbors, a cell will die due to overcrowding. If there are too few neighbors, a cell will die due to lack of resources. The user is able to control the number of processors in the X direction, the number of processors in the Y direction, the number of generations to compute, and the number of generations to compute between outputs of an image. A oneshot parameter, "Go for it!!" is supplied to begin the execution of the module. Life_WT is written in multiC, a fully compatible extension of the ANSI C programming language. It was developed using a Data Transport Computer from Wavetracer, Inc.

The Loadsim module will create a ball and stick geometry representation of molecular dynamics or Monte Carlo data. The ability to interactively select positions in the data file as well as individual chains is advantageous for visualizing chain motions. Although written for visualizing simple chain-like molecules it can be extended to other systems.

MOSS_Polylines - Reader for MOSS format polyline vector lists. The Arc/Info MOSS export files are an ASCII format file readable by the US Department of the Interior's MOSS public domain GIS. The file contains points, lines, or closed polygon loops, and a 30-character attribute field, called the "subject" value. The Arc/Info coverages are converted into the MOSS files using the "ARCMOSS" utility in the data conversion utility subsystem. This module has a file browser, for selecting the ASCII input MOSS file, which is scanned for closed polygon areas. The polylines are converted into AVS geometry polylines for use by the AVS geometry viewer. The polyline does not have a color defined in this module, such that it can be interactively altered in the viewer, and saved with a network file.

MOSS_Markers - Reader for MOSS format markers. The Arc/Info MOSS export files are an ASCII format file readable by the US Department of the Interior's MOSS public domain GIS. The file contains points, lines, or closed polygon loops, and a 30-character attribute field, called the "subject" value. The Arc/Info coverages are converted into the MOSS files using the "ARCMOSS" utility in the data conversion utility subsystem. This module has a file browser, for selecting the ASCII input MOSS file, which is scanned for markers. The markers are converted into AVS geometry for use by the AVS geometry viewer. Each marker is shown as a sphere, with radius controlled by the dial. The marker does not have a color defined in this module, such that it can be interactively altered in the viewer, and saved with a network file.

MOSS_Polygons - Reader for MOSS format polygon coverages. The Arc/Info MOSS export files are an ASCII format file readable by the US Department of the Interior's MOSS public domain GIS. The file contains points, lines, or closed polygon loops, and a 30-character attribute field, called the "subject" value. The Arc/Info coverages are converted into the MOSS files using the "ARCMOSS" utility in the data conversion utility subsystem. This module has a file browser, for selecting the ASCII input MOSS file, which is scanned for closed polygon areas. The polygons are converted into AVS geometry for use by the AVS geometry viewer. The polygon does not have a color defined in this module, such that it can be interactively altered in the viewer, and saved with a network file.

Menger sponge produces a Menger Sponge (Sierpinski Sponge) as a byte volume. A Menger Sponge (sometimes known as a Sierpinski Sponge) is a recursively defined volume. It is the 3D analog to a Sierpinski Carpet which is can be poorly defined as a recursive 3x3 grid where the center square of each level of the recursion is missing. A more formal definition can be found in Benoit Mandelbrot's book "The Fractal Geometry of Nature" on page 144. You can see a Sierpinski Carpet if you orthoslice the sponge and look at slice 0 (any direction). CURDLE (at the IAC) is another example of a module which produces recursively defined "fractal" data sets.

The "Mouse Trap" module accesses the X-Window of the Geometry Viewer display, and changes the mouse button definitions. It is intended as an AVS application developers example, to create custom interface controls. It intercepts all mouse events, and then selectively sends commands on to AVS for action. At present, it ignores all except the right mouse button, which behaves as a "pick", like the normal AVS left mouse button, while ignoring rotation and translation requests. The implementation is to make an invisible input only window, exactly covering the geometry viewer window. Events from this invisible window are detected, masking the geometry viewer window native events. Commands are then sent via the CLI mechanism. As a coroutine, this module can also take events from user interface parameters, although none are present in this version.

The "Mouse Trap IV" module accesses the X-Window of the Image Viewer display, and changes the mouse button definitions. It intercepts all mouse events, and then selectively sends commands on to AVS for action. This version ignores all normal image viewer mouse controls, and causes special behavior instead. The left button will "zoom in" the image, while the right button will "zoom out" again, each by a preset amount. It is intended as an AVS application developers example, to create custom interface controls. This module also shows how to change the mouse cursor shape while over viewer window. This is intended as a source example for further development work.

The QUAL field module is used to selectively grab data elements from a large output plot file and map them to the geometry of an example river. The geometry can be changed (with some effort) to match that of any river. The codes that generate the output plot files used by this module are QUAL2E and QUAL2E-UNCAS which were developed by Linfield Brown (Dept. of Civil Eng, Tufts Univ.) and Thomas Barnwell (EPA, Athens GA.).

This module outputs a series of "title" labels, creating a credit page for an AVS application. This module provides an example for creating a single geometry object with multiple labels within it.

This module reads an image into an AVS Network in a variety of formats. All formats which the San Diego Supercomputing Center's Image Tools support, this module supports. With this module you can read in a postscript file, and edit it with the standard tools of AVS ! Any of the following image file formats can be read in by this module eps Encapsulated PostScript file, gif Compuserve Graphics image file, hdf Hierarchical Data File, icon Sun Icon and Cursor file, iff Sun TAAC Image File Format, mpnt Apple Macintosh MacPaint file, pbm Portable Bit Map file, pcx ZSoft IBM PC Paintbrush file, pgm Portable Gray Map file, pic PIXAR picture file, pict Apple Macintosh QuickDraw/PICT file, pix Alias image file, pnm Portable aNy Map file, ppm Portable Pixel Map file, ps PostScript file, ras Sun Rasterfile, rgb SGI RGB image file, rla Wavefront raster image file, rle Utah Run length encoded image file, rpbm Raw Portable Bit Map file, rpgm Raw Portable Gray Map file, rpnm Raw Portable aNy Map file, rppm Raw Portable Pixel Map file, synu Synu image file, tiff Tagged image file, x Stardent AVS X image file, xbm X11 bitmap file, xwd X Window System window dump image file, and any others supported by SDSC's Image Tools. Version 3.0 is much easier to compile than before, as it doesn't link with the Image Tools - it calls the imconv utility directly using a system call.

READ TIMESTAMP -- read the input field and timestamp file and output a subset field and a subset timestamp string (suitable as recursive inputs to this module once the timestamp string is written into a file). The MCNC Environmental Programs Group has created this module as part of a suite of AVS demo modules, networks, and sample data sets to demonstrate the functionality of its visualization prototype for an Environmental Decision Support System (EDSS). You can download these modules individually from the IAC using anonymous ftp to the appropriate directories /avs_modules at avs.ncsc.org. If you would like to download the entire suite of modules, networks, and sample datasets at the same time, the IAC recommends that you use anonymous ftp to grab the following file from avs.ncsc.org - ftp/avs/Data/avs_dataMCNC_Env_Pgms/MCNC_Env_Pgms.tar.Z This contains all source code to all local and remote modules, as well as all of the sample datasets, networks, documentation, installation, and usage notes.

NAME READ_TIN - Reader for Arc/Info Triangulated Region Mesh The READ_TIN module accesses external ASCII files defining a triangulated irregular network (TIN) structure from Arc/Info. This is generally used for a surface representation derived from irregulary space sample points and breakline features. The TIN data set includes topological relationships between points and their proximal triangles. Each sample point has an x,y coordinate and a surface, or z-value. These points are connected by edges to form a set of nonoverlapping triangles userd to represent the surface. TIN files are also called "irregular triangular mesh" or "irregular triangular surface model" in some contexts. "TIN" is the name of the ESRI Arc/Info application module that models, creates, displays, and exports TIN files. Within the TIN application the UNGENERATETIN command with the NET option should generate files compatable with this reader module. An optional image input port will apply a full colour texture map onto the TIN geometry, such that the geometry viewer can show the texture overlay on the terrain. The second file browser (WorldImageFile) allows a small coordinate range correction file to specify the mapping between the optional input raster texture image and the TIN coordinate system. This module requires AVS 5.01, with texture per object support.

READ WINDTIMESTAMP -- read the input wind field and timestamp file and output a subset field and a subset timestamp string (suitable as recursive inputs to this module once the timestamp string is written into a file). The MCNC Environmental Programs Group has created this module as part of a suite of AVS demo modules, networks, and sample data sets to demonstrate the functionality of its visualization prototype for an Environmental Decision Support System (EDSS). You can download these modules individually from the IAC using anonymous ftp to the appropriate directories /avs_modules at avs.ncsc.org. If you would like to download the entire suite of modules, networks, and sample datasets at the same time, the IAC recommends that you use anonymous ftp to grab the following file from avs.ncsc.org - ftp/avs/Data/avs_dataMCNC_Env_Pgms/MCNC_Env_Pgms.tar.Z This contains all source code to all local and remote modules, as well as all of the sample datasets, networks, documentation, installation, and usage notes.

This DATA input module animates a sequence of data applied to a UCD structure. The base format is exactly the same as the standard UCD, except that you can specify a 6-th value on the first line (if you use ASCII format) , giving the maximum number of time steps to consider. By default, allocation is provided for at most 256 time steps.

This module reads an Explorer Lattice file and generates a field. It supports both ASCII and binary files. The file name parameter only shows file names with extensions .lat and .cmap, but you can enter any file name. Components are labeled Channel 0, Channel 1, etc. and units also.

This data input module reads a *.pic file created with Radiance 2.1 (or greater) radiosity package. It outputs a Field 2D 4-vector b yte field for viewing with the image viewer module. An sample image file is included.

The read_seq input modules sends a sequence of files' names, to a string parameter ports. Its purpose is to generate a sequence of files names, a sequence which will be used as input for different data input modules. It has four parameters, called "File name", "Animation On/Off", "Current step", and "Nr.frames". In a typical network with read_seq, before you can connect the character string to the receiving module,you must make that receiving module's parameter port visible.

This is an example module to show how one can go from cylindrical or spherical to cartesian coordinates. This has been written for specific datasets, but it should serve the purpose. Anyways, the trick is to calculate the points array properly in order to feed field2mesh, in most cases. See also - Dipole.

You can use this module for example in the field of CFD. The "Read CFD" module reads a sample data. The format of a sample data(CFD) is discussed below in the "Read_CFD.txt" file. It is the most populer format of CFD.

Read DXF is a utility module for converting 2D and 3D DXF files into an AVS Geometry Data Type. If level information is available in the DXF file, Read DXF will use this to create separate objects. DXF is the file type for autoCAD output. Supported Entities LINE POLYLINE 3DFACE BLOCK LEVEL Read DXF can be easily modified to handle more primitives, ie. points, arcs, & circles. All of the DXF header information is overlooked. If Read DXF encounters a primitive it doesn't understand it dumps out a geometry of what it had generated to that point, plus a message with the code number , the command to interpret, and the current layer name.

The EJ65 file format interface is for 3D body fitted coordinate flowfield and mesh data. This module is a Reader for the EJ65 geometry and field data, in FORTRAN. It accesses the files via interactive browsers, and reads the binary files directly into the AVS session. The two browsers are for the mesh and flow field files. They are combined on one output port. The module is automatic, and follow the input array dimensions, but must be compiled with an interal array size to match the largest expected field. Two types of input are supported, native floating point format of the host machine (double precision), and if the host is bigendian, then native CONVEX non-IEEE binary input is supported, using the optional mode. By default, the flow solution data is moved 1/2 a cell to the node positions. If requested, it is left at the cell centers, and nodal values are calculated by nearest cell interpolation. The interpolation mode is untested. The Freeze button us used to set new flow or mesh files, or other parameters on the module, before attempting the read. Both files are accessed, regardless of the parameter change. The EJ65 file format is in use at a number of sites, including British Aerospace, PLC, UK

A well-commented Reader for 2D field data, in FORTRAN, that combines ASCII file inport in fixed FORTRAN FORMAT, and does numeric computation on the data before sending it to the output port. It allows multiplication of a coefficient on one particular row, defined by a channel dial. This is intended as a working example of a FORTRAN read module, to be modified by others.

The Read_Mopac module reads Cartesian coordinates, bond orders and valencies, final heat of formation, and atomic charges from a MOPAC output file with mno extension. It allows users to visualize the process of a chemical reaction. Each stage of the chemical reaction is shown as a frame of the display of a molecular structure. Users can observe different stages of the chemical reaction by changing the value of the parameter "Coord Set". If the user connects the output port of the AVS Module, Animate Integer, to the parameter Coord Set then the user can see the animation of this chemical reaction. Users have the choice of coloring atoms by atom type or the formal charge value of the atom. Default bond colors are white but users can change them based on bond strength or the difference between the formal charges of the two atoms involved in that bond. Color legends of formal charge and bond strength are provided to allow the user to associate colors with their numerical values. The distribution of final heat of formation (energy) of the chemical reaction can be displayed by the Graph Viewer. Atom labels (atom names and numbers) can be displayed on the atoms in

Read SDRC reads a file which is in the SDRC I-DEAS universal format converts it into an AVS UCD format. At present only two types of node data record are implemented, static and transient. A static record has one set of values at each node. A transient record has a set of values at each node for different times. Please see the International AVS Center's sample dataset subdirectory for two datafiles you might want to try with this module - crankshaft.unv and trans-therm.unv. PARAMETERS

READ SEG Y is an data input module which reads seismic data stored in the SEG Y format. SEG "Y" is a format devised by the Society of Exploration Geophysicists (SEG), for transfer of demultiplexed seismic data on 9-track tape. SEG Y was published in 1974, and superceded the SEG "Ex" format. SEG Y defines, for each tape reel, a 3200 byte EBCDIC text header, followed by a 400 byte binary header. The data follows as a variable number of traces. Each trace has a 240 byte header, followed by a variable number of samples, each represented as a 4-byte real value.

Read Unversal File is a utility module for conversion of I-DEAS Unversal Files into AVS UCD data. This module only extracts Stress data and node-element information.

This little module was written while playing with the graph viewer. A simple module to spit out a 1-D field was desired, and this did the trick. It computes a sin wave over the range 1..npoints degrees, and spits out a "field 1-D 1-space 1-vector uniform float" suitable for display with the graph viewer module. This may be a useful starter module if you want to learn how to get your 1-D data into AVS.

The Sonify module will synthesize sounds and can be controlled by other modules via command string input. It is most useful for data sonification where a data-producing module will send commands to Sonify based on the data represented.

This module is a simple C subroutine that will output a variety of surfaces/colors depending upon what 3-D mathematical function you choose it to have. The basic framework for the existing module example simply computes the distance from the center of a 100x100 grid (R = sqrt(r1*r1 + r2*r2)) and multiplies it by a sinusoidal factor (cos(scale data_input data_output filters khoros mappers misc source.tar stre tmp R)) where scale is a scaling parameter, used to give it the waviness (z-dimension) we want. You can make it very interesting by attaching the "animated float" module to the widget input port instead of the float dial! The example network provided does this. This is a great example to learn how to manipulate AVS fields.

The tick mark module creates sheets with major and minor line grids along the three primary axes. It makes polytriangle objects, not lines, so they can have variable thickness. It also has label annotation on the 3D object.

This module produces labels that are geometries. They can be scaled, rotated, and translated. Other geometric operators work as well, such as color, perspective, and material properties. The source for the vector information for the fonts is derived from the Hershey Fonts, stored in comp.sources.unix, volume 4, on your nearest archive site. The Hershey Fonts were originally created by Dr. A. V. Hershey while working at the U.S. National Bureau of Standards. The format of the font data in the Internet distribution was originally created by James Hurt at Cognition, Inc.

This module is a C coroutine that presents a special X-window with a large dial. The dial is similar to the standard AVS dial widget, but has higher resolution and a secondary needle that moves much slower than the primary needle. The dial can work in accumulator mode (around and around) or with fixed low and high end stops. In immediate mode it sends an output float to the output port continuously while the needle is moving, otherwise only when the mouse button lifts up.

The WriteSeqAnim module sends a sequence of file names to a string parameter port. Its purpose is to generate a sequence of file names; the sequence will be used as input for different DATA OUTPUT modules. Before you can connect the character string to the receiving module, you must make that receiving module's parameter port visible. To make a parameter port visible, call up the module's Editor Window panel by pressing the middle or right mouse button on the module icon dimple. Next, look under the "Parameters" list to find the parameter you want to plug into. Position the mouse cursor over that parameter's button and press any mouse button. When the Parameter's Editor Window appears, click any mouse button over its "Port Visible" switch. A blue-green (teal) parameter port should appear on the module icon. Connect this parameter port to the character string module icon in the usual way one connects modules.

This module allows users to set the coordinate of the "zoom box" and UTM zone of the view area. This is one of a suite of modules we used to plot the emission data for the state of North Carolina. This group of modules allows displaying points, lines and polygons over a map of the United States. The module suite is stored as a group in a compressed tar file at the International AVS Center, with some sample networks and datasets included. You may find it easier to access the modules this way. The compressed tar file is approximately 1.2MB in size, and can be found via anonymous ftp to avs.ncsc.org, in ftp/avs/Dat