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# dot

(.) symbol

### Calling Sequence

123.33 a.*b [123,.. 456]

### Description

- .
Dot is used to mark decimal point for numbers : 3.25 and 0.001

- .<op>
used in conjunction with other operator symbols (

`*/ \ ^ '`

) to form other operators. Element-by-element multiplicative operations are obtained using`.* , .^ , ./ , .\`

or`.'`

. For example,`C = A ./ B`

is the matrix with elements`c(i,j) = a(i,j)/b(i,j)`

. Kronecker product is noted`.*.`

. Note that when dot follows a number it is always a part of the number so`2.*x`

is evaluated as`2.0*x`

and`2 .*x`

is evaluated as`(2).*x`

.- ..
Continuation mark. Two or more dots at the end of a line (or followed by a comment) causes the following line to be a continuation.

Continuation lines are handled by a preprocessor which builds a long logical line from a sequence of continuation lines. So the continuation marks can be used to cut a line at any point.

The following function

`foo`

:is equivalent to:

The logical line formed by physical line 3 and physical line 4 is built as if it was entirely written in the physical line 4 while physical line 3 would be empty. This is done this way because continuation marks can be put anywhere even inside an expression.

### Examples

//decimal point 1.345 //used as part of an operator x=[1 2 3];x.^2 .*x // a space is required between 2 and dot // used to enter continuation lines T=[123,..//first element 456] //second one a="here I start a very long string... //but I'm not in the mood of continuing - and here I go on" y=12.. 45

### See Also

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