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CA S - Correspondence Analysis - find Solution

(8/22/97)

PURPOSE

Second part of CORAN or PCA:
Execute correspondence analysis of image data previously stored in a sequential file using 'CA SI'. the solution is found and eigenimages are calculated.

SEE ALSO

CA MAP [Correspondence Analysis - nonlinear mapping]
CA SI [Correspondence AnalysiS - initialize]
CA SM [Correspondence Analysis - factor map]
CA SME [Correspondence Analysis - factor map and Eigen Values]
CA SR [Correspondence Analysis - full reconstitution of images]
CA SRD [Correspondence AnalysiS - reconstitute differential images]
CA SRI [Correspondence AnalysiS - reconstitute importance images]
CA SRP [Correspondence Analysis - PCA reconstitution]
CA VIS [Correspondence Analysis - Create visual map]

USAGE

.OPERATION: CA S

.SEQUENTIAL FILE: SEQ001
[Enter the name of the "sequential file" containing the image data, which has been previously created by executing 'CA SI'.]

.NUMBER OF FACTORS, COORDINATE FILE CODE: 8,1
[Enter the number of factors to be used. Note that eigenvectors and eigenvalues are only computed up to this number. 'CA S' creates three files to store the results. Their respective names and meanings are
IMC# image coordinates
PIX# pixel coordinates
EIG# eigenvectors and eigenvalues
Here the code number is used to distinguish coordinate file sets of different 'CA S' runs. The code is used in subsequent operations ('CA SM','CA SME','CA SR','CA SRD') to refer to the results of a particular run.

.PRINCIPAL COMPONENT ANALYSIS (Y/N)?: Y or N
[answer Y: will start Principal Component analysis.] [answer N: continue CORAN]

.ENTER INACTIVE IMAGE NUMBERS (EG. 1-3,5,6-9 or 0 ): 0
[The following solicitations exist to let the user define a subset of images that will be treated differently from the rest. The subset specified below will be interpreted as THOSE IMAGES, out of the total pool, THAT ARE TO BE SWITCHED INACTIVE.

.IN-CORE (1) TRANSPOSE (2) OR ITERATIVE (3) METHOD SOLUTION:
[Depending on the memory available on the system (or allocated to the user, the user can choose between 3 methods of doing the matrix computations involved in the Coran or PCA analysis)]

SUBROUTINES

JPMSK1, SCORAN3, PCA_MAIN

CALLER

UTIL1

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