17.2.6. Das Maßstabselement

Scale bars provide a visual indication of the size of features, and distance between features, on the map item. A scale bar item requires a map item. Use the scaleBar Add Scale Bar tool following items creation instructions to add a new scale bar item that you can later manipulate the same way as exposed in Interacting with layout items.

By default, a new scale bar item shows the scale of the map item over which it is drawn. If there is no map item below, the reference map is used. You can customize it in the Item Properties panel. Other than the items common properties, this feature has the following functionalities (see figure_layout_scalebar):

../../../../_images/scalebar_properties.png

Abb. 17.31 Scale Bar Item Properties Panel

17.2.6.1. Haupteigenschaften

The Main properties group of the scale bar Item Properties panel provides the following functionalities (see figure_layout_scalebar_ppt):

../../../../_images/scalebar_mainproperties.png

Abb. 17.32 Scale Bar Main properties group

  1. First, choose the map the scale bar will be attached to

  2. Wählen Sie dann den Stil des Maßstabs. Sechs Stile stehen zur Verfügung:

    • Single box and Double box styles, which contain one or two lines of boxes alternating colors;

    • Middle, Up or Down line ticks;

    • Numeric, where the scale ratio is printed (e.g., 1:50000).

  3. Set properties as appropriate

17.2.6.2. Einheiten und Segmente

The Units and Segments groups of the scale bar Item Properties panel (not available for the Numeric style) provide the following functionalities (see figure_layout_scalebar_units):

../../../../_images/scalebar_units.png

Abb. 17.33 Scale Bar Units and Segments groups

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

  • Select the units you want to use with Scalebar units. There are many possible choices: Map Units (the default one), Meters, Feet, Miles or Nautical Miles… which may force unit conversions.

  • The Label unit multiplier specifies how many scale bar units per labeled unit. Eg, if your scale bar 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.

  • Sie können definieren wie viele Segmente links und rechts vom Maßstab gezeichnet werden.

  • 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.

  • Höhe wird benutzt, um die Höhe der Leiste einzustellen.

17.2.6.3. Anzeigen

The Display group of the scale bar Item Properties panel provides the following functionalities (see figure_layout_scalebar_display):

../../../../_images/scalebar_display.png

Abb. 17.34 Scale Bar Display group

Sie können festlegen wie der Maßstab in seinem Rahmen darsgestell wird.

  • Rahmenrand: Zwischenraum zwischen Text- und Rahmengrenzen

  • Label margin : space between text and scale bar drawing

  • Vertical label placement: it can be above or below the scale bar segment

  • Horizontal label placement: which would be centered at the scale bar segment’s edge or center

  • Linienbreite: Linienbreite der Maßstabsdarstellung

  • Join style : Corners at the end of scale bar in Bevel, Miter or Round style (only available for Scale bar style Single Box & Double Box)

  • Endenstil: Das Ende aller Linien im Stil Quadratisch, Rund Flach (nur erhältlich für die Maßstabsstile Linieneinteilung Oben, Unten und Mittig)

  • Alignment : Puts text on the left, center or right side of the frame (works only for Scale bar style Numeric)

17.2.6.4. Schriftarten und Farben

The Fonts and colors group of the scale bar Item Properties panel provides the following functionalities (see figure_layout_scalebar_fonts):

../../../../_images/scalebar_fonts.png

Abb. 17.35 Scale Bar Fonts and colors groups

You can define the fonts and colors used for the scale bar. These properties are data-definable.

  • Use the Font button to set the properties (size, font, color, letter spacing, shadow, background…) of the scale bar label.

    Example: The following code applied to the bold property of the scale labels will display texts in bold when they are a multiple of 500:

    -- returns True (or 1) if the value displayed on the bar
    -- is a multiple of 500
    
    @scale_value % 500 = 0
    
  • Füllfarbe: setzen Sie die erste Füllfarbe

  • Zweite Füllfarbe: setzen Sie die zweite Füllfarbe

  • Line color: set the color of the lines of the Scale Bar

Fill colors are only used for Single Box and Double Box styles.