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https://issues.apache.org/jira/browse/SYSTEMML-1241?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15861639#comment-15861639
]
Deron Eriksson commented on SYSTEMML-1241:
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I'll update the language ref and make the error message more informative.
> Matrix initialization with diag() not possible
> ----------------------------------------------
>
> Key: SYSTEMML-1241
> URL: https://issues.apache.org/jira/browse/SYSTEMML-1241
> Project: SystemML
> Issue Type: Bug
> Reporter: Felix Schüler
> Assignee: Deron Eriksson
> Priority: Minor
>
> The documentation for diag() states that
> {quote}
> Create diagonal matrix from (n x 1) or (1 x n) matrix, or take diagonal from
> square matrix
> {quote}
> This snippet
> {code}
> mlctx.execute(dml("D = diag(matrix(1.0, rows=1, cols=2))"))
> {code}
> fails with
> {code}
> Name: org.apache.sysml.api.mlcontext.MLContextException
> Message: Exception when executing script
> StackTrace: at
> org.apache.sysml.api.mlcontext.MLContext.execute(MLContext.java:307)
> at org.apache.sysml.api.mlcontext.MLContext.execute(MLContext.java:276)
> ... 48 elided
> Caused by: org.apache.sysml.api.mlcontext.MLContextException: Exception
> occurred while validating script
> at
> org.apache.sysml.api.mlcontext.ScriptExecutor.validateScript(ScriptExecutor.java:553)
> at
> org.apache.sysml.api.mlcontext.ScriptExecutor.execute(ScriptExecutor.java:307)
> at org.apache.sysml.api.mlcontext.MLContext.execute(MLContext.java:299)
> ... 49 more
> Caused by: org.apache.sysml.parser.LanguageException: Invalid Parameters :
> ERROR: null -- line 1, column 0 -- Invoking diag on matrix with dimensions
> (1,2) in
> DIAG(RAND(,lambda=1.0,min=1.0,pdf=uniform,seed=-1,max=1.0,sparsity=1.0,rows=1,cols=2
> ))
> at
> org.apache.sysml.parser.Expression.raiseValidateError(Expression.java:556)
> at
> org.apache.sysml.parser.BuiltinFunctionExpression.validateExpression(BuiltinFunctionExpression.java:630)
> at org.apache.sysml.parser.StatementBlock.validate(StatementBlock.java:567)
> at
> org.apache.sysml.parser.DMLTranslator.validateParseTree(DMLTranslator.java:140)
> at
> org.apache.sysml.api.mlcontext.ScriptExecutor.validateScript(ScriptExecutor.java:551)
> {code}
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