More about drawing attributes

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More about drawing attributes

What is a drawing attribute?

A drawing attribute is a feature for a graphical component type that controls how the components should be written on the screen in the graphical view, how they should be displayed. In dpSpatial there are approximately 20 different kinds of drawing attributes that can be applied to the components, e.g. different color settings, dimensions, scale interval, fonts, designs and styles. All the component types that has a graphical presentation has different drawing attributes that can be adjusted. In the table below a description of the different component types are displayed.

 

Component typ

Description

Example

Graphical representation

Text

Text graphic in the map view and schema.

Label, free text

Yes

Graphic

Lines, polygons

Referens line, unpostable line

Yes

Symbol

Point with related graphics

Filled polygons

Yes

Raster

Raster image with corner coordinates and URL.

Satellite image

Yes

Data

The primary component for the object. Non graphical information.

Object type ID, terminal data

No

 

All drawing attributes are not available for all component types. There are common drawing attributes that you can adjust for two or more component types. An example is the color settings which can be edited on all component types except the raster components. The drawing attributes for Scale from and Scale to however, is available for all the component types including raster.

Other drawing attributes are own, i.e. they can only be applied on an unique component type. Examples of own drawing attributes are a text style that can only be adjusted on a text component. Another example is Width in pixels, which is a drawing attribute that the symbol component owns.

 

Common and own drawing attributes  

Drawing attributes

Component type

 

Scale from

Symbol

Text

Graphic

Raster

Common

*

*

*

*

Scale to

*

*

*

*

Draw order

*

*

*

*

Initially visible

*

*

*

*

Line color

*

*

*

 

Fill color

*

*

*

 

Line width

*

*

*

 

Line width in meter

*

*

*

 

Line style

*

 

*

 

Fill style

*

 

*

 

Height

*

*

 

 

Minimum pixel height

*

*

 

 

Maximum height in pixels

*

*

 

 

 

Own

Symbol font

Font

 

 

Symbol ID

Justification

 

 

Width in meters

Text style

 

 

Minimum width in pixels

 

 

 

Maximum width in pixels

 

 

 

 

In the following tables a description of all the available drawing attributes are displayed, both common drawing attributes and those drawing attributes which only exists for symbol and text components. In the occurring case a standard value is set for the drawing attribute. A component is assigned to a standard attribute automatically as soon as the component is included in a product either by that:

the component exists in a product class, which can be connected to a product, or

the component is added to a product class, which is already connected to one or several products.

 

Common drawing attributes

Drawing attribute

Description

Scale from

Scale factor from which the component should be visible.

 

Standard attribute: 0.

Scale to

Scale factor to which the component should be visible.

 

Standard attribute: 2000.

Draw order

Specifies where in z-direction components should be drawn. Components with low draw order values are drawn in background layers in the map view, and components with high draw order values in foreground layers. Thus, components with high draw order values may overlap components with low draw order values.

Standard attribute: 0

For recommended draw order values for maps, map objects and components, see section Recommended draw order values.

Visible

Is set in the drop-down list with the values Yes, No or NULL (empty field value).

A component with the drawing attribute Visible, where the attribute is set to No, will automatically be hidden or not visible in the graphical view.

 

Standard attribute: Yes (visible).

Line color

Drawing color for line graphics, border lines and hatching (patterns) in filled areas.  

 

Standard attribute: Black.

Fill color

Fill color on filled areas like polygons and symbols.

 

Standard attribute: Black.

Line style

Drawing style for lines. Select a line style by using the drop-down list:

Standard attribute: 0

It is possible to create additional line styles that can be available for placers that can use individual drawing attribute e.g. Free graphic.

If user-defined line styles exists, the values for line width and line width in meter, will not be drawn. Those fields remain gray (=not editable).

 

Line width in pixels

The thickness of a line measured in number of image points or pixels.

The given pixel value for a line is a limiter for the given line width in meter. In order for the representation of a line with a wanted width of 1 meter should remain real in the map view, it takes a higher pixel value the smaller the map scale that is used.

 

Standard attribute: 1.

 

Note! That if user-defined line styles exists, the values for line width and line width in meter, will not be drawn. Those fields remain gray (=not editable).

Line width in meter

The line thickness measured in meter, depends on the degree of zooming in. The standard value is -1 which gives that the drawing in the map view always is controlled by the line width in pixels.

 

Standard attribute: -1.

 

Note! That if user-defined line styles exists, the values for line width and line width in meter, will not be drawn. Those fields remain gray (=not editable).

Fill style
 

Fill style and hatching of closed areas and symbols are set by using a drop-down list:

 

Filled. Standard attribute.

Unfilled

Diagonals 1

Diagonals 2

Horizontal lines

Vertical lines

Cross net

Grid

Plus signs

Small squares

Background color

Small circles

Large circles

Small filled circles

 

It is possible to create additional fill styles. Contact Digpro for more information.

 

Height

The height measured in meters.

Standard attribute: 1.

Minimum height in pixels

The minimum allowed height in pixels, regardless of scale.

Standard attribute: 0.

Maximum height in pixels

The maximum allowed height measured in pixels, regardless of scale.

Standard attribute: 0.

 

Own drawing attributes: symbol components

Symbol drawing attributes

Description

Symbol font

The name on a symbol library.

Symbol ID

The name of a symbol in a symbol library.

Polygons are displayed with purple fill color.

Width

The width measured in meters.

Standard attribute: 1.

Minimum width in pixels

The minimum allowed width in pixels, regardless of scale.

Standard attribute: 0.

Maximum width in pixels

The maximum allowed width measured in pixels, regardless of scale.

Standard attribute: 0.

 

Own drawing attributes: text components

Text drawing attributes

Description

Font

The text font. The font is set by a numeric value. If no value is set, the standard font for the system will be used (Arial).

Justification

Justification of the text location. A drop-down list with nine values are used to set the justification points (also attachment point/anchor point) in relation to the placement of the text. See illustration below for an example:

 

(0) Top left

 

(6) Top center

 

(12) Top right

 

 

 

 

 

(1) Center left

 

TEXT

 

(13) Center right

 

 

 

 

 

(2) Bottom left

 

(8) Bottom center

 

(14) Bottom right

Example: A text justification (6) Top center has a justification point that exists straight above the text.

Application: A text can be rotated around its justification point.

Standard attribute: 2 (bottom left).

Text style

Formatting of texts. Is set by using a drop-down list with predefined values:

Undefined

Default (Default attribute)

Bold

Italic

Bold/Italic

Halo