The TSG Screens
Here you can find an overview of the major screens used within TSG™. Click any of the links to go to the description and click the image to return to the top of this page. Additionally, a short video providing an overview of the TSG screens can be found on YouTube.
Summary Log Spectrum Scatter Stack Tray
Overview at a glance
The Summary screen is designed to give you an overview of your dataset and is by default the first screen you will see when you open or create a new TSG dataset. It is particularly useful for gauging the degree and type of variability within large datasets, and can now also summarise the broad mineral groups down-hole in spatially related data sets. This screen consists of two sub-screens, the Overview Assemblage Histogram and the Spatial Assemblage Histogram. By default these are presented in the upper and lower plots, respectively, but the user can change what is displayed in each plot using the Plot Type control drop down list. To select one of the plots to make it the active plot, all you need to do is to click on it.
The Overview Assemblage Histogram is driven by the automated spectral analysis program The Spectral Assistant (TSA) and displays histogram bars relating to the number of minerals identified in the data set as well as the frequency of the occurrence of those minerals. TSA is designed to give you an overview of the mineral species or classes likely to be present in your dataset. This plot can be a useful indication of the assemblages or suites of minerals present (e.g. phyllic, propyllitic, argillic, felsic, mafic, ultramafic, etc.), before launching into the detail analysis of a large number of individual spectra.
The Spatial Assemblage Histogram, also displays the results of TSA, but allows the user to control the x-axis scalar which can be any numerical scalar but makes more sense if it is a spatial scalar such as a Depth scalar or Index scalar. If a “Depth (m)” scalar is present in the data set (which would normally be automatically created on import of a HyLogging data set) then TSG will use this by default. If this scalar is not present, then the Index scalar is used by default. The user can create a depth scalar at any time. For example, by importing the depth data for a set of hand measured spectra and then use this information in this display.
I need to see numbers
The Log screen is one of TSG’s most powerful features because it allows other data sets associated with a suite of spectra to be integrated, compared with and analysed alongside your spectral data. The TSG Core Log screen is designed to display spectral data, linescan imagery, profilometer data, geochemical data, comment fields and any other types of numerical and text field relevant to the data set in a format which most exploration geoscientists will probably find familiar.
The concept is based on a drill hole log but is equally effective when dealing with surface traverse or geochemical sample grid data. This display format also allows you to visualise large amounts of spectral data in a down hole/line traverse format.
It’s possible to display up to 32 columns of data including over 500 spectra in colour slice format on one screen (using a 1024 x 768 screen). Users can adjust the column widths, move their screen position, scale and change the colours of the displays within them. Text, spectral image logs (colour slices), bar graphs, line graphs can all be displayed in the Log Columns. Also, individual spectra can be interrogated and examined simply by selecting them from the log and viewing them in one of the Floater windows or the Spectrum screen.
When analysing HyLogging data in TSG Core, users can scroll down the Linescan image data as if traversing down the core, so that you can see the exact piece of core associated with the spectral and ancillary data.
Using the Log screen it is easy to display any number of combinations of geochemistry, geological and spectral data. The variety of display formats is almost unlimited and allows you to explore all of your data fully. In addition, all of the data displayed can be saved in the TSG file system or exported as graphics or CSV ASCII data for use in other programs via the clipboard.
In TSG Core, users can also interactively create their own class scalars using the Class Edit… tool in the Log screen. This is a powerful feature, which allows you to interactively select and assign spectra/core intervals to a given class during your analysis of a data set (such as “junk” for wood blocks or empty intervals, or an interpretation, such as “white mica”).
Show me absorptions
The Spectrum Screen is used to display and examine single spectra in detail. You can also use this screen to compare (overlay) spectra from the system library, different parts of the current data set and from other TSG files (attached Aux files). Because all of the main screens are linked, selecting a different part of the data set in the Log or Stack Screens will immediately update the active spectrum in the Spectrum Screen.
Using the Logs status bar option on the pop up menu displays the information displayed in the Log Screen for the active spectrum in the Spectrum screen. This information is updated as you select various sample spectra from the file list.
In TSG Pro, there is one reference library that can be accessed in the spectrum screen the SWIR library (S_SWIR_TSA63),and TSG Core has two reference libraries, the SWIR library and and the VNIR library (S_VNIR_TSA63)). These are based on averages of the training spectra in The Spectral Assistant (TSA) training set and are useful to overlay with your project spectra when interpreting and analysing them. You can also attach and overlay spectra from another TSG file (such as a custom library) for comparison.
The results of the TSA analysis are shown in the bottom right of the Spectrum screen as an indication of the possible mineralogy of the spectrum, to assist in your interpretations.
Show me relationships
Alongside the Log screen, the Scatter Screen forms the heart of TSG’s data analysis capabilities. The Scatter Plot screen allows the user to assign any scalar values to X or Y axes and a third scalar to the colour scale (Z) in up to 16 simultaneously displayed graphs. Graph windows can also display frequency histograms for any selected scalar.
As many TSG datasets are composed of a variety of data types including spectral data, geochemistry and coordinate data, the Scatter Plot screen is designed to allow you to display and analyse all of these data types as an integrated data set. In addition, each plot window in the Scatter screen is linked so that the selected data point/sample/spectrum in one screen is highlighted in all the other screens currently on display.
By assigning coordinate data to X and Y axes the Scatter Plot screen can be used to display sample spatial distribution in plan or section. This allows the spatial distribution of geochemistry and alteration mineralogy to be simultaneously investigated. This functionality combined with the Floater window also allows the simultaneous analysis of hundreds or even thousands of spectra while at the same time allowing you to keep track of individual sample spectral or mineralogical characteristics. Similarly, using RL and Easting or Northing data for down hole samples can allow you to plot a section of holes in the Scatter screen with their data points coloured by a given scalar in your TSG file.
There are a number of advanced analysis tools available in the Scatter Plot screen such as the lasso option, whichallows you to select a cluster of data points and view where these samples occur in all other displayed plots. Plots can also be filtered using the Scope option, to display only those samples from a given class (such as a given lithology, mineral assemblage or section).
In the Scatter Plot screen shown in the figure, four plot windows have beenset up. The top two plot windows are being used to display coordinate data with the data points coloured to show various geochemical and spectral data. The plot window at bottom left is being used to display a histogram while the window a bottom right isbeing used in scatter plot mode to investigate correlations between certain geochemical and spectral parameters.
The Stack Screen is used to display numbers of ‘stacked’ spectra in either line or image format. It allows detailed analysis of portions of the data set while still providing access to the Log Screen data (using the Logs status bar option). In particular it is useful for identifying repeating patterns or blocks of similar spectra as well as gradually changing trends through a dataset. Selecting a spectrum in the Stack Screen will update the Spectrum Screen while zooming to a particular portion of the data set will also update the Log Screen view.
Stack plot print outs and graphics are labeled with the spectrum name, which is useful to allow the user to relate the stack plot outputs back to the spectrum/sample.
What does the core look like?
The Tray Screen is a TSG Core specific screen, which allows you to view enhanced core tray reconstructions for each core tray scanned by the HyLogger. The Trays are faithful to the core trays horizontally, but each core segment has been been offset vertically to allow the plotting of depth ticks and scalar plots under the core segments. The Trays are shown in landscape orientation, with the start position at top left.
The Tray screen has a live cursor which is linked to all the other TSG screens, so when you point to a part of the core the spectral and any other ancillary data for that sample will be displayed in the other TSG screens, as well as the Floater windows.
The Tray screen has a Class Edit tool and a unique tool for interactive depth logging. It also has two sub-modules for generating Tray pictures and Mosaic pictures, which may be used as standalone products or displayed in one of the TSG Floaters.