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# legend

draw graph legend

### Syntax

hl=legend([h,] string1,string2, ... [,pos] [,boxed]) hl=legend([h,] strings [,pos] [,boxed])

### Parameters

- h
graphic handle on an Axes entity or vector of handles on polyline entities. The default value is the handle on

`current_axes`

.- string1,string2, ...
character strings

`stringi`

is the legend of the ith curveStarting from Scilab 5.2, it is possible to write LaTeX or MathML expression.

- strings
n vector of strings,

`strings(i)`

is the legend of the ith curveStarting from Scilab 5.2, it is possible to write LaTeX or MathML expression.

- pos
(optional) specify where to draw the legend; this parameter may be a string (or equivalent but obsolete an integer). It can also be a vector

`[x,y]`

which gives the coordinates (in user units) of the upper left corner of the legend box.In the first case the possible valuesare:

1 or "in_upper_right": the legend is drawn in the upper right-hand corner (default). This is the default value.

2 or "in_upper_left":the legend is drawn in the upper left-hand corner.

3 or "in_lower_left": the legend is drawn in the lower left-hand corner.

4 or "in_lower_right": the legend is drawn in the lower right-hand corner.

5 or "by_coordinates": interactive placement with the mouse .

-1 or "out_upper_right": the legend is drawn at the right of the upper right-hand corner.

-2 or "out_upper_left": the legend is drawn at the left of the upper left-hand corner.

-3 or "out_lower_left": the legend is drawn at the left of the lower left-hand corner.

-4 or "out_lower_right": the legend is drawn at the right of the lower right-hand corner.

-5 or "upper_caption": the legend is drawn above the upper left-hand corner.

-6 or "lower_caption": the legend is drawn below the lower left-hand corner.

- boxed
a boolean (default value %t) which sets ot not the drawing of the box.

- hl
a handle, points to the Compound containing all the legend .

### Description

Puts a legend on the current plot using the specified strings as labels. legend prepends labels by a recall of the corresponding line or patch. The recall type and properties are recovered from the given handles:

when called without handle argument (or with a handle on an axes entity) the function first build the vectors of handle on polylines entities which are the children of the given axes.

In the interactive placement mode (opt=5) move the legend box with the mouse and press the left button to release it.

### Examples

t=linspace(0,%pi,20); a=gca(); a.data_bounds=[t(1) -1.8;t($) 1.8]; plot2d(t,[cos(t'),cos(2*t'),cos(3*t')],[-5,2 3]); e=gce(); e1=e.children(1); e1.thickness=2; e1.polyline_style=4; e1.arrow_size_factor = 1/2; e.children(2).line_style=4; e3=e.children(3); e3.line_mode='on'; e3.mark_background=5; hl=legend(['cos(t)';'cos(2*t)';'cos(3*t)']);

### See also

- xstring — draw strings
- captions — draw graph captions
- polyline_properties — description of the Polyline entity properties

## Comments

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