ntsys方法说明NTSYS-pc software procedures
Set up Excel spreadsheet
1st row at A1=1 (type of spreadsheet), B1=#rows, C1=#columns, D1=symbol for missing values
2nd row should contain column labels or empty
Matrix should begin on B3 (note row 2 is empty as is column 1)
S...
NTSYS-pc software procedures
Set up Excel spreadsheet
1st row at A1=1 (type of spreadsheet), B1=#rows, C1=#columns, D1=symbol for missing values
2nd row should contain column labels or empty
Matrix should begin on B3 (note row 2 is empty as is column 1)
Save spreadsheet as an xls file
Close excel.
Making NTSYS matrix
Click on Ntedit
File/import/OLE file
Select excel spreadsheet (matrix should import)
Check matrix to make sure it is in right orientation
Click Col lab button and insert column labels
Do the same for row labels if you want
Save file as what ever you want but should have a spreadsheet.nts extension.
Analysis (note must keep all windows open to proceed to next step)
Open NTSYS-pc program
Click similarity then simqual buttons
Input file click on open space to browse, select spreadsheet.nts file just created
Don’t check by rows
Insert sm in coefficient for similarity matching
Click output file as a text file simqual.nts
Positive code=1.00
Negative code=0.00
Then compute
Print out report file/ notebook/ print/ok.
Go back to NTSYS-pc screen
Check clustering then SAHN
Input file will be the simqual.nts file above
Output file will be SAHN.NTS
Clustering method=UPMGA
In case of tie=WARN
Maximum # of tied trees=2
Tie tolerance =0.000000000
Beta=0.000000000
Compute.
Make tree plot
Go to graphics in NTSYS-pc program window
Click tree plot, plot should come in view
File/save metafile.emf
To make similarity matrix
Go to NTSYS-pc window
Click general then Dcenter
Input file=simqual.nts
Result matrix=matrix.nts
Compute.
Ordination
Open NTSYS-pc window
Click ordination
Click eigen
Input matrix= matrix.nts
Dim=3
Output eigenvector.emf
Vector scaling=square lamda
Sample size=0
Degree of freedom=0
How to make 2D or 3D graph (PCA)
Go to Graphics, then 3D plot, Input file=eigenvector.emf, then don’t check plot by rows, X (1) Y (2) Z (3), Graph matrix file (no), then rotation30.00 30.00, view distance (999.00), then compute.
PCA analysis
Open NTSYS-pc program
Click similarity then qualitative data buttons
Input file click on open space to browse, select spreadsheet.nts file just created
Don’t check by rows
Insert sm in coefficient for similarity matching
Click output file as a text file simqual.nts
Positive code=1.00
Negative code=0.00
Then compute
Print out report file/ notebook/ print/ok.
To make similarity matrix
Go to NTSYS-pc window
Click general then Dcenter
Input file=simqual.nts
Result matrix=matrix.nts
Compute.
Ordination
Open NTSYS-pc window
Click ordination
Click eigen
Input matrix= matrix.nts
Dim=3
Output eigenvector.emf
Vector scaling=square lamda
Sample size=0
Degree of freedom=0
Make 2D or 3D graph (PCA)
Go to Graphics, then 3D plot, Input file=eigenvector.emf, then don’t check plot by rows, X (1) Y (2) Z (3), Graph matrix file (no), then rotation30.00 30.00, view distance (999.00), then compute.
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