Ellis's GPS Support Page
Plotting Baseline Phase Residuals

Have you ever wanted to plot the baseline residuals so that you could spot the noisy data without combing through a huge confusing list of numbers? Well now you can. Upgrade to SKI-Pro 3.0 which finally includes residual plots, and more. I highly recommend this method rather than following the procedures below. You get many more types of plots with much less work.

With SKI-Pro 2.x versions, using AWK, a freeware GNU tool, you can create comma delimited files which can be opened in Microsoft Excel and plotted. This should not be attempted unless you are familiar with Ski-Pro processing, Microsoft Excel, and have some experience with script languages and programs.

Please NOTE:
This is not a Leica product or procedure.
DO NOT call Leica's support number with questions about this procedure.
I will answer any basic questions you have, but other than that... IF YOU TRY THIS, YOU ARE ON YOUR OWN.

The general steps are as follows:

1. Download and extract the AWK zip file. (A good place to copy and extract the file is the C:\Program Files\Leica Geosystems directory). An \AWK directory with subdirectories will be created. See the ReadMe.txt file.
2. From the results page in Ski-Pro, right-click on the baseline of interest in the tree view on the left side of the screen and select "Compute residuals".
3. Open the baseline folder that was created and right-click on "Residuals" and select "Save as.."
4. Enter "ResLogV2.txt" as the name for this file and save it in the "SkiProV2_Resids_AWK/input" folder created when you extracted the zip file.
5. From Windows explorer, double-click on the "Run_SkiPro_Resdid_AWK.bat" file. This will create four files of L1 and L2 code and phase residuals.
5a. Using a text editor, move the column header line from the last line to the 5th line in the L1 and L2 phase residual files.
6. Run Excel and open the L1 and L2 phase residual files.
7. For each file, select delimited and set start importing at line 5.
8. Click the next button and select comma as the delimiter.
9. Click the next button, leave all columns as general and click the finish button.
10. Click in the second cell of column "D", and then while holding the shift key, click in the last cell of the last column (there is a limit of 255 rows per plot) to select the range of residuals to plot.
11. Click on the Chart Wizard icon.
12. Select "Line" as the chart type and click the next button.
13. Select Series in: as "Columns" and click the finish button.
14. Your phase residuals will be plotted.
15. Repeat as necessary for your data set.

To download the readme file and the zip file (contains embedded directories and files)
right click on the appropriate link
then click on "Save Target As..."
then select the destination directory on your computer.

Please download and read the readme file first.