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Scilab help >> Scilab > Scilab keywords > dot

# 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`:

```function
a=1
disp(a),..
disp('ok')
endfunction```

is equivalent to:

```function
a=1

disp(a),disp('ok')
endfunction```

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```

• star — (*) multiplication operator
• hat — (^) exponentiation
• slash — (/) right division and feed back
• backslash — (\) left matrix division.