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Simplifying the Learning Curve of the Seismic Unix Library

A graphical user interface to help jumpstart your SU Library adoption

The SU (Seismic Unix) Library is a well-known set of utilities used to research and process seismic data. Supported by the Center for Wave Phenomena (CWP) at the Colorado School of Mines (CSM), it is a powerful package that is widely used in the geoscience community.

Following the Linux philosophy, each utility within this package is a separate command. For example, the segyread command converts SEG-Y files to the SU format. With hundreds of commands at your disposal, and with each command having multiple parameters, it can be a daunting task to get started.

INTViewer provides a graphical user interface for the SU library, reducing the learning curve. The Seismic Workbench is a free plugin that has the documentation for the SU library built in, making it easy to find a particular command and all the parameters that this command requires. INTViewer builds the full command line for you based upon all individual commands selected. [See the Seismic Workbench plugin video walkthrough here.]

An example of generated command line
An example of generated command line

You can elect to run this command line from inside INTViewer or from your own terminal. Running inside INTViewer provides neat integration options: Not only you can leverage INTViewer’s built-in trace processors and generators, but you can also visualize in real time the datasets that each step creates. The workbench allows you to customize the display parameters of each output dataset, and save your set of steps as a complete job for later reuse.

An example of processing step configuration
An example of processing step configuration

While the SU Library was built with Linux in mind, Windows users are not without options. They typically use Cygwin to run native Linux applications, including the SU library utilities. [Stay tuned for our next blog describing the complete installation of Cygwin and the SU Library on Windows.] Users of the seismic workbench have reported that the graphical user interface and the integration with INTViewer made the SU Library much more accessible.

For more information about INTViewer, visit the INTViewer product page, or contact us for a free trial.


How to Create Interactive Slideshows (VIDEO)

Presenting data to clients regularly poses many challenges, especially considering that today’s datasets are likely to exceed a petabyte or more. Presentations made with tools like PowerPoint may take hours to create, are instantly obsolete, and frequently don’t fully answer your clients’ questions.

With one simple plugin, INTViewer transforms the art of showing data to your clients by combining the simplicity of a slideshow with the power of live data.

Quick tip: Check out our INTViewer slideshow tutorial to get started!

 

Create, Share, and Standardize Presentations

The INTViewer slideshow plugin streamlines how your company presents data to potential customers.

Data managers can create slideshows in INTViewer and share them with their colleagues.

Large datasets can be transferred to laptops without any loss of definition using the lattice decimation plugin, making INTViewer slideshows portable.

This new presentation medium saves time and can help standardize how your sales team presents data, while leaving enough flexibility to answer customer questions.

Easy to Learn, Easy to Use

Presentations built using INTViewer work just like other presentation software—once you load the slideshow, press play to start, then press the Next button to go from one slide to another.

Create slideshows easily with INTViewer.

The slideshow window allows you to jump to a different slide without losing context.

2D-map-lines
This slide shows all of the lines at once.
verify-data-easily
The next slide shows the map and a cross-section of the highlighted 2D line.
Manipulating the data is incredibly easy. For example, to verify the definition of your data, you can zoom in just by holding the shift key and drawing a box around the section you want to view.

And to investigate a problematic area, you can view a spectrum analysis with just one click (S+draw a box).

seismic-analysis

Ready to make your presentations interactive?

For more information about INTViewer, check out our other blogs, visit the INTViewer product page, or contact us for a free trial.


3 NetBeans Shortcuts to Help You Be More Productive

I have been using NetBeans daily for about 8 years, so I’d say I am pretty familiar … with the features I use all the time. Over the years, friends and colleagues have shown me that there are faster ways to get the job done. I have gathered in this post three shortcuts that I learned from others and that you can also use when you develop an INTViewer plugin.

#1 Finding a class file in the Project Tree

A software like INTViewer has thousands of source files, spread over dozens of plugins. As I am in the process of editing one file, I often find myself needing to find out which other files are related: I need contextual information about the file I am changing or I need to commit all changes to that module at once.

The project view before Shift+Ctrl+1 is pressed.

 

The shortcut to do this is to type Shift+Ctrl+1 on your keyboard.

The project view after Shift+Ctrl+1 is pressed.

 

This shortcut opens both the package where the file resides and the module that contains that file.

#2 Closing all other files

The process of writing software is not a continuous flow. I work on several aspects of the software at the time, with lots of interruptions. Sooner or later, I have several dozens of unrelated files open. When I need to work on a tricky part of the code, the first task is to clear the clutter.

The NetBeans makes it easy: the “close button” of each NetBeans window has a handy tooltip that informs you of available shortcuts.

The NetBeans tooltip for the window close button.

 

By pressing the Alt key as I am clicking this close button, I isolate the associated file, closing all other files that are open. I do this for each group of windows, and in 2 or 3 clicks, I reduced my clutter to the 2 or 3 files that matter.

Interestingly, because INTViewer is based on the NetBeans platform, INTViewer users also benefit from the same feature. If I have several INTViewer windows open, I can click on the one window I want to keep, automatically closing all others in the same tab group.

The INTViewer tooltip for the window close button.

 

#3 Loading already-configured projects

INTViewer itself is made of more than 80 plugins, but there are at least 50% more that are not part of the standard distribution. They are proprietary customer plugins, community plugins that we share with all our users, prototype plugins that we are working on. I sometimes need to run these plugins on top of the “bleeding edge” version of INTViewer’s code, sometimes on specific distributions that customers already use, sometimes on top of other plugins. The project configuration possibilities are endless, but I tend to use about 10 of these different configurations all the time.

NetBeans has a feature called Project Groups to facilitate switching between project configurations. To save your current project configuration, go to File→Project Groups. You will see a dialog with a button New Group that leads to the screen below:

This dialog proposes several options on how to create your project group. I typically use the Free Group option and press the Create Group button.

To load a project group already created, go to File→Project Groups, pick the project group that you need to work on, and choose Select Group

Your project tree will load exactly as you left it when you saved it as project group.


Accessing INTViewer Remotely

In our blog post on Microsoft Azure, we describe various ways customers can move their data to the cloud. In the configuration where INTViewer is hosted on a remote server and needs to be accessed from a local workstation, a Teradici client is one solution.

These configurations are increasingly popular with our customers. For performance reasons, it makes sense to host INTViewer next to your data. But this data tends to be large and hosted in remote data centers.

Teradici is not the only software we have tested with INTViewer. Other softwares allow such remote access. The minimum sophistication of remote access software depends on what you plan to do with INTViewer. If you only plan to visualize data in 2D, most software will work off the shelf. On Linux, a well-known solution built into the operating system is to use X11 forwarding. On Windows, there are various free software solutions widely available such Microsoft Remote Desktop Connection (bundled with Windows) and VNC.

If you need to display your data in 3D or if you need cross-plotting, these widely available solutions won’t work. In many cases, users will encounter an annoying “Can’t display 3D window” or “Can’t display cross-plot” message. INTViewer uses OpenGL to render cross-plot and 3D visualization, and this technology imposes specific requirements. INTViewer requires OpenGL v3 or greater, and most classic solutions only support OpenGL v2.

As a result, in addition to Teradici, INTViewer has been tested with commercial software such as HP RGS. INTViewer has also been tested with VirtualGL. VirtualGL is open source so there is no cost to download and set up the product. Another product some clients have used is called ThinLinc by Cendio. ThinLinc is not an open-source product, but they offer a limited trial version.

If you need assistance setting up your remote desktop environment, contact us at support@int.com for help.


Picking Horizons in INTViewer 5.2

Horizon picking is a feature that INTViewer has included from the start. However, after discussing with several long-time users, I have found that the evolutions brought by each release can be missed. The release of INTViewer 5.2 is a good opportunity to tour basic picking options.

First, a bit of terminology. The term “horizon” in geoscience is often a generic term for surfaces. In INTViewer, “horizon” is a surface that is typically defined by trace number or INLINE-XLINE as opposed to X-Y.

In INTViewer’s lingo, surfaces defined in X-Y are “grid surfaces” if they follow an X-Y grid. If they don’t follow of well-defined grid, they are “Gocad” or “Triangle Mesh” surfaces. The “grid” of an “horizon” is the grid of the underlying seismic dataset. Users can work with horizons on 2D datasets, 3D volumes, and gathers.

When it comes to editing horizons, there are three picking modes available: Mouse Drag, Mouse Click, and AutoTrack.

The layer shortcut window giving quick access to all horizon options.
 
The Mouse Drag picking mode is the default and lets you draw continuous lines across a XSection.

An example of picking using Mouse Drag.
 
Mouse Click is a faster picking mode as you only need to pick a few points. After you release the mouse, the traces between the last two points are auto-picked.

An example of picking using Mouse Click.
 
AutoTrack is the fastest picking mode as it will pick across the entire section visualized on screen.

An example of picking using AutoTrack.
 
Users are not limited to one picking mode. Keyboard shortcuts let you switch modes interactively as you are picking points. You can elect to “snap” picks to peaks or troughs and sample measurements are affected by default by any trace processor that might be applied.

All snapping options.
 
Each snapping option is detailed in the INTViewer user guide.

Your picks are reflected in real time in all windows, including 3D windows.

A 3D window next to a 2D window where an horizon is picked.
 
Which brings me to this new INTViewer feature. Picking in 2D is a tedious activity. A faster way to pick a full volume is to use the built-in horizon interpolation.

This interpolation uses the Natural Neighbor algorithm to propagate existing picks into a full surface. This is an option accessible from the contextual menu of an horizon layer.

The Natural Neighbor Interpolation option
 
Another often overlooked feature of INTViewer is the attribute extraction. Download the Horizon Attribute Extraction plugin from the Plugin Store to benefit from this feature.

Click the highlighted link to install this free plugin.
 
The horizon extraction is also accessible from the contextual menu of an horizon layer. This is a tool with numerous options, useful for 4D analysis. As this is an operation that is typically applied to multiple datasets, it is scriptable in Python. INTViewer will create Python scripts for you based upon your extraction parameters.

The Horizon Attribute Extraction dialog.
 
There are a few features not included in this tour: A calculator is available to combine the attribute of several horizons with a mathematical formula. Formulas can also be applied to trace headers to create header horizons.

Contact us for more information on horizon picking!