Item da Barra de Escala

Para adiciona uma barra de escala, clique no ícone |mActionScaleBar| Adicionar nova barra de escala, clicando com o botão esquerdo do mouse sobre a tela do compositor de impressão, posicionando e personalizando a aparência na guia da barra de escala na aba Propriedades do ítem.

A Propriedades do item de uma barra de escala apresentam as seguintes funcionalidades (veja figure_composer_scalebar_1):

Figure Composer Scalebar 1:


Aba propriedades do item da Barra de Escala nix

Propriedades Principais

O diálogo Propriedades principais da guia Barra de escala Propriedades do item apresenta na aba as seguintes funcionalidades (veja figure_composer_scalebar_2):

Figure Composer Scalebar 2:


Propriedades do item da Barra de Escala nix

  • Primeiro, escolha o mapa ao qual a barra de escala será ligada.

  • Em seguida, escolha o estilo da barra de escala. Seis estilos estão disponíveis:

    • Estilos Box simples e Box duplo, que contêm uma ou duas linhas de caixas de cores alternadas.

    • Middle, Up or Down line ticks.
    • Numeric, where the scale ratio is printed (i.e., 1:50000).

Unidades e Segmentos

The Units and Segments dialogs of the scale bar Item Properties tab provide the following functionalities (see figure_composer_scalebar_3):

Figure Composer scalebar 3:


Scale Bar Units and Segments Dialogs nix

In these two dialogs, you can set how the scale bar will be represented.

  • Select the units you want to use with Scalebar units. There are four possible choices: Map Units, the default one and Meters, Feet or Nautical Miles which may force unit conversions.
  • The Label unit multiplier specifies how many scalebar units per labeled unit. Eg, if your scalebar units are set to “meters”, a multiplier of 1000 will result in the scale bar labels in “kilometers”.
  • The Label for units field defines the text used to describe the units of the scale bar, eg “m” or “km”. This should be matched to reflect the multiplier above.
  • You can define how many Segments will be drawn on the left and on the right side of the scale bar.
  • You can set how long each segment will be (fixed width), or limit the scale bar size in mm with Fit segment width option. In the latter case, each time the map scale changes, the scale bar is resized (and its label updated) to fit the range set.
  • Height is used to define the height of the bar.


The Display dialog of the scale bar Item Properties tab provide the following functionalities (see figure_composer_scalebar_4):

Figure Composer Scalebar 4:


Scale Bar Display nix

You can define how the scale bar will be displayed in its frame.

  • Box margin : space between text and frame borders
  • Labels margin : space between text and scale bar drawing
  • Line width : line width of the scale bar drawing
  • Join style : Corners at the end of scalebar in style Bevel, Rounded or Square (only available for Scale bar style Single Box & Double Box)
  • Cap style : End of all lines in style Square, Round or Flat (only available for Scale bar style Line Ticks Up, Down and Middle)
  • Alignment : Puts text on the left, middle or right side of the frame (works only for Scale bar style Numeric)

Fonts and colors

The Fonts and colors dialog of the scale bar Item Properties tab provide the following functionalities (see figure_composer_scalebar_5):

Figure Composer Scalebar 5:


Scale Bar Fonts and colors Dialogs nix

You can define the fonts and colors used for the scale bar.

  • Use the [Font] button to set the font of scale bar label
  • Font color: set the font color
  • Fill color: set the first fill color
  • Secondary fill color: set the second fill color
  • Stroke color: set the color of the lines of the Scale Bar

Fill colors are only used for scale box styles Single Box and Double Box. To select a color you can use the list option using the dropdown arrow to open a simple color selection option or the more advanced color selection option, that is started when you click in the colored box in the dialog.