Creating Shotpoint Maps

RockWorks | Utilities | Map | Shotpoints

This program is used to create a map that illustrates shotpoint locations as read from the datasheet. The shotpoint data must include (at minimum) a shotpoint line number, a symbol, and an X and Y coordinate for the individual shotpoint. You may optionally include the point number (not used in the map) and a label for points, typically representing distance. Each seismic line will have two or more data rows containing individual point records.

See also: Importing SEG-P1 Data regarding automatic import of SEG-P1 shotpoint data files.

Menu Options
Step-by-Step Summary

Menu Options

• Input Columns: 
  • Line Numbers: The program will use this alphanumeric field to group the shotpoints into lines. For data imported using the SEG-P1 import tool, this should read, "Line#".
  • Symbols: Select the name of the data column that contains the symbols and colors to be used for the points along the shotpoint lines.
  • X (Easting), Y (Northing): Select the data columns that contain the location coordinates for the shotpoints.
• Line Style/Color: Click here to select a style and color for the shotpoint lines.
• Symbol Size: Click here to change the size of the shotpoint symbols, as a percent of the map width.
  • Tip: Because the program will scale all symbols at the declared size, you might want to choose smaller symbol styles (such as versus ) for unlabeled points versus labeled points.
• Labels: Insert a check here if you want the shotpoint map symbols to include labels. Expand this item to establish the label settings.
  ! Be warned that if you have a lot of points, adding labels may make the map difficult to read, and can require some time for the map to generate.
• Borders: Insert a check here if you want the map's border to include coordinate tick marks and/or axis labels. Expand this heading to establish the border settings.
• Plot All Lines: ! This is an important setting! Insert a check here if you want all seismic lines in the current data file to be plotted. If your data file contains thousands of points, this might create a crowded-looking map. Leave this box cleared if you prefer only selected lines. (You'll have the chance momentarily to select which ones.)
  
  

Step-by-Step Summary

1. Be sure you have opened, imported, or typed into the main RockWorks datasheet the shotpoint data to be plotted as a map. 
2. Select the Shotpoints command from the Map menu.
3. Enter the requested menu settings, described above. 
4. Click the Process button to continue.
5. If you did not check the Plot All Lines box, you will need to complete these steps.  
   • The program will now display a listing of all of the lines in the current data file. The line names are taken from the data column you specified for Line #. The names will be listed in the order in which they occur in the data file.
   • Select the line(s) to be included in the output map. To select multiple lines, press the <Ctrl> key while you click on the line names. Use the scroll bar as necessary to view names not currently visible.
   • Click OK when you are ready to continue.

The program will create a map illustrating the shotpoint locations on the selected seismic lines.  The completed map will be displayed in a RockPlot2D tab in the options window.

6. You can adjust any of the settings in the Options window (scaling, fill colors, etc.) and then click the Process button again to regenerate the map.
   ! Each time you click the Process button, the existing display will be replaced.
    
7. View / save / manipulate / export / print the map in the RockPlot2D window. 

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