Data Window

The Data Window controls the observed values of first arrivals at the geophones and optionally their uncertainty.

Data Window in Refract

The spreadsheet of values comprises most of the window. Listed is the geophone number, the observed arrival time for both the forward and reversed shots and their uncertainties (if that option is chosen in the Preferences Window). Clicking on this spreadsheet and then clicking on the value to be changed will allow you to edit that value. Tabs will move you forward through the list; shift-tab will move backwards. Values and the Plot Window are changed when the cell being edited becomes inactive (by selecting another cell or another window). Clicking on the header at the top of a column will sort the fits by values in that column. Column widths can be resized by dragging the dividers between headers.

You can paste model times (the times calculated for the model as shown in the Model Window) into the data window using the command in the Edit Menu. This can be useful for seeing how different models might produce similar arrival times for a particular geometry. You can copy the picks to the clipboard (Edit Menu) and print the data picks (File Menu).

The RMS Misfit at the top of the window is the root mean square of the differences between observed and calculated values and is updated when calculated or observed values are changed.