1. Download variowin.zip from
Basics for using Variowin
Download variowin.zip from

2. Variowin 2.21 Installation
unzip variowin.zip in a temp directory run Install.exe to get the bellow variowin 2.2 folder

3. Variowin 2.21 Prevar2D Module
Prevar2D – A program for computing a 2D pair comparison file from a Geo-EAS data file

4. Variowin 2.21 Prevar2D Module
Opening an Input File (.dat)
Click on the Open option of the File menu of Prevar2D to get the File Open window. Chose a .dat file and Click on the OK button of this window.
Partial Contents of the Example.dat file
Example.dat - Geostatistical Environmental Assessment Software 5
Easting
Northing
Arsenic ppm G stored in columns
Cadmium ppm F Also, notice the 'ROW Identifier' below. This
Lead ppm F is not counted as a variable (must use quotes)
'Sample 1'
'Sample 2'
'Sample 3'
'Sample 4'
'Sample 5'
'Sample 6'
'Sample 7'
'Sample 8'
'Sample 9'
'Sample 10'
'Sample 11'

5. Variowin 2.21 Prevar2D Module
Setting XY Coordinates
Click on the XY-Coordinates… of the Settings menu option. Choose X and Y coordinates and press OK button.
Setting Limits
Click on the Limits… of the Settings menu option. Choose the Attribute name and press the Apply and then the Exit button. 1 2 3

6. Variowin 2.21 Prevar2D Module
Prevar2D – A program for computing a 2D pair comparison file from a Geo-EAS data file
Running Prevar2D
Press the Run! option of the Prevar2D window menu in order to create the .pcf (Pair Comparison File) file that will be used as input for the Vario2D with pcf Module

7. Variowin 2.21 Vario2D Module

8. Variowin 2.21 Vario2D Module
Opening a .pcf file
In the Open option of the File menu choose a pcf file to be used for creating variograms. Press OK after the file was choosen.
Setting variogram parameters
Click on the Settings… option of the menu bar to open the Settings window. Click on the options you want to use as settings for the variograms’ creation. Click on the Apply button to end your choices.

9. Variowin 2.21 Vario2D Module

10. Variowin 2.21 Vario2D Module

11. Variowin 2.21 Vario2D Module

12. Variowin 2.21 Model Module

13. Choosing the variogram
Variowin 2.21 Model Module
Opening a .var file
In the Open option of the File menu choose a variogram file (.var) to be used for model the variograms. Press OK after the file was choosen.
Choosing the variogram
Choose one variogram of the list that appears in the Experimental variograms window. Press OK button after your choice.

14. Variowin 2.21 Model Module Setting model parameters
Click on the Settings… option of the menu bar to open the Settings window. Click on the options you want to use as settings for the variograms’ model. Click on the Apply button to end your choices.

15. Modeling the Variograms
Variowin 2.21 Model Module
Modeling the experimental variogram
Modeling the Variograms
Click on the Model option of the menu bar of the Model Window
Change Parameter values to model the experimental variograms
Try to find a modeled variogram with a good fit, small Nugget, Sill next to the global Covariance and a reasonable Range
Click on Store button to store the variogram modeled parameters

16. Variowin 2.21 Grid Display Module

17. Variowin 2.21 EXAMPLE WITH ELEVATION DATA FROM CANCHIM REGION
USING RESIDUAL ELEVATIONS

18. Variowin 2.21 Prevar2D Module
Opening an Input File (.dat)
Click on the Open option of the File menu of Prevar2D to get the File Open window. Chose a .dat file and Click on the OK button of this window.
Partial Contents of the elevfilt.dat file

19. Variowin 2.21 Prevar2D Module
Settings
XY Coordinates,
Limits and
Run !

20. Variowin 2.21 Vario2D Module
Opening a .pcf file
In the Open option of the File menu choose a pcf file to be used for creating variograms. Press OK after the file was choosen.
Setting variogram parameters
Click on the Settings… option of the menu bar to open the Settings window. Click on the options you want to use as settings for the variograms’ creation. Click on the Apply button to end your choices.

21. Variowin 2.21 Vario2D Module
Displaying Variogram Surfaces
Choose Variogram Surface… of the Calculate option of the Vario2D menu. Choose a Variable Name, set other window parameters and press the OK button tho show the Variogram Surface.

22. Variowin 2.21 Vario2D Module
Displaying Directional Variograms
Choose Directional Variogram… of the Calculate option of the Vario2D menu. Choose a Variable Name, set other window parameters and press the OK button tho show the Variogram.

23. Variowin 2.21 Vario2D Module
Saving the Variogram File
Choose Save As… of the File option of the Vario2D menu. Type a name in the Filename: text field. Press the OK button to save the .var file in the current Directory. The saved file will have a table format and will contain the variogram and its associated values (means and variances)

24. Choosing the variogram
Variowin 2.21 Model Module
Opening a .var file
In the Open option of the File menu choose a variogram file (.var) to be used for model the variograms. Press OK after the file was choosen.
Choosing the variogram
Choose one variogram of the list that appears in the Experimental variograms window. Press OK button after your choice.

25. Variowin 2.21 Model Module Setting model parameters
Click on the Settings… option of the menu bar to open the Settings window. Click on the options you want to use as settings for the variograms’ model. Click on the Apply button to end your choices.

26. Modeling the Variograms
Variowin 2.21 Model Module
Modeling the experimental variogram – Exponencial Model
Modeling the Variograms
Click on the Model option of the menu bar of the Model Window
Change Parameter values to model the experimental variograms
Try to find a modeled variogram with a good fit, small Nugget, Sill next to the global Covariance and a reasonable Range
Click on Store button to store the variogram modeled parameters

27. Modeling the Variograms
Variowin 2.21 Model Module
Modeling the experimental variogram – Spherical Model
Modeling the Variograms
Click on the Model option of the menu bar of the Model Window
Change Parameter values to model the experimental variograms
Try to find a modeled variogram with a good fit, small Nugget, Sill next to the global Covariance and a reasonable Range
Click on Store button to store the variogram modeled parameters

28. Variowin 2.21 Model Module
Modeling experimental variograms – Exponential Models – VarioWin and SPRING
Nugget Effect = 2.3, Range = , Sill = ,