problem with simple if() statement

the following code apprantely, for some grand old reason, induces a syntax error:

  if (seq[i] = "A") m <- trans[1,]

  where seq is a vector and trans is a matrix. I cannot for the life of me see why this is wrong. Syntax error is: 

  Error: syntax error in "if (seq[i] ="
I guess you mean "==" ....

Uwe Ligges

  Sincerely,

  Norman Goodacre

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problem with simple if() statement

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