Transcript Variowin 2.21 - Instituto Nacional de Pesquisas Espaciais

Basics for using Variowin
Download variowin.zip from
http://www-sst.unil.ch/research/variowin/#DOWNLOAD
Variowin 2.21
Installation
unzip variowin.zip in a temp directory
run Install.exe to get the bellow variowin 2.2 folder
Variowin 2.21
Prevar2D Module
Prevar2D – A program for computing a 2D pair
comparison file from a Geo-EAS data file
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
G16.9 stored in columns 21-30.
Cadmium ppm
F10.3 Also, notice the 'ROW Identifier' below. This
Lead
ppm
F10.3 is not counted as a variable (must use quotes)
288.0 311.0 .850 11.5 18.25 'Sample 1'
285.6 288.0 .630 8.50 30.25 'Sample 2'
273.6 269.0 1.02 7.00 20.00 'Sample 3'
280.8 249.0 1.02 10.7 19.25 'Sample 4'
273.6 231.0 1.01 11.2 151.5 'Sample 5'
276.0 206.0 1.47 11.6 37.50 'Sample 6'
285.6 182.0 .720 7.20 80.00 'Sample 7'
288.0 164.0 .300 5.70 46.00 'Sample 8'
292.8 137.0 .360 5.20 10.00 'Sample 9'
278.4 119.0 .700 7.20 13.00 'Sample 10'
360.0 315.0 .050 3.90 21.25 'Sample 11'
Variowin 2.21
Prevar2D Module
Setting XY Coordinates
Setting Limits
Click on the XY-Coordinates… of the
Settings menu option. Choose X and
Y coordinates and press OK button.
Click on the Limits… of the Settings menu
option. Choose the Attribute name and
press the Apply and then the Exit button.
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3
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
Variowin 2.21
Vario2D Module
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.
Variowin 2.21
Vario2D Module
Variowin 2.21
Vario2D Module
Variowin 2.21
Vario2D Module
Variowin 2.21
Model Module
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.
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.
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
Variowin 2.21
Grid Display Module
Variowin 2.21
EXAMPLE WITH ELEVATION DATA
FROM CANCHIM REGION
USING RESIDUAL ELEVATIONS
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
Variowin 2.21
Prevar2D Module
Settings
XY Coordinates,
Limits and
Run !
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.
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.
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.
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)
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.
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.
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
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
Variowin 2.21
Model Module
Modeling experimental variograms – Exponential Models – VarioWin and SPRING
Nugget Effect = 2.3, Range = 980.75, Sill = 198.83,