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STYLEΒΆ

Style holds parameters for symbolization and styling. Multiple styles may be applied within a CLASS or LABEL.

This object appeared in 4.0 and the intention is to separate logic from looks. The final intent is to have named styles (Not yet supported) that will be re-usable through the mapfile. This is the way of defining the appearance of an object (a CLASS or a LABEL).

ANGLE [double|attribute|AUTO]

Angle, given in degrees, to rotate the symbol (counter clockwise). Default is 0 (no rotation). If you have an attribute that specifies angles in a clockwise direction (compass direction), you have to adjust the angle attribute values before they reach Mapserver (360-ANGLE), as it is not possible to use a mathematical expression for ANGLE.

  • For points, it specifies the rotation of the symbol around its center.

  • For decorated lines, the behaviour depends on the value of the GAP element.

    • For negative GAP values it specifies the rotation of the decoration symbol relative to the direction of the line. An angle of 0 means that the symbol’s x-axis is oriented along the direction of the line.
    • For non-negativ (or absent) GAP values it specifies the rotation of the decoration symbol around its center. An angle of 0 means that the symbol is not rotated.
  • For polygons, it specifies the angle of the lines in a HATCH symbol (0 - horizontal lines), or it specifies the rotation of the symbol used to generate the pattern in a polygon fill (it does not specify the rotation of the fill as a whole). For its use with hatched lines, see Example #7 in the symbology examples.

  • [attribute] was introduced in version 5.0, to specify the attribute to use for angle values. The hard brackets [] are required. For example, if your data source has an attribute named “MYROTATE” that holds angle values for each feature, your STYLE object for hatched lines might contain:

    STYLE
      SYMBOL 'hatch-test'
      COLOR 255 0 0
      ANGLE [MYROTATE]
      SIZE 4.0
      WIDTH 3.0
    END
    

    The associated RFC document for this feature is MS RFC 19: Style & Label attribute binding.

  • The AUTO keyword was added in version 5.4, and currently only applies when coupled with the GEOMTRANSFORM keyword.

Note

Rotation using ANGLE is not supported for SYMBOLs of TYPE ellipse with the GD renderer (gif).

ANGLEITEM [string]

ANGLE[attribute] must now be used instead.

Deprecated since version 5.0.

ANTIALIAS [true|false]
Should TrueType fonts be antialiased. Only useful for GD (gif) rendering. Default is false. Has no effect for the other renderers (where anti-aliasing can not be turned off).
BACKGROUNDCOLOR [r] [g] [b]
Color to use for non-transparent symbols.
COLOR [r] [g] [b] | [attribute]

Color to use for drawing features.

  • r, g and b shall be

integers [0..255]. To specify green, the following is used:

COLOR 0 255 0
  • [attribute] was introduced in version 5.0, to specify the attribute to use for color values. The hard brackets [] are required. For example, if your data set has an attribute named “MYPAINT” that holds color values for each record, use: object for might contain:

    COLOR [MYPAINT]
    

    The associated RFC document for this feature is MS RFC 19: Style & Label attribute binding.

GAP [double]

GAP specifies the distance between SYMBOLs (center to center) for decorated lines and polygon fills in layer SIZEUNITS. For polygon fills, GAP specifies the distance between SYMBOLs in both the X and the Y direction. For lines, the centers of the SYMBOLs are placed on the line. As of MapServer 5.0 this also applies to PixMap symbols.

When scaling of symbols is in effect (SYMBOLSCALEDENOM is specified for the LAYER), GAP specifies the distance in layer SIZEUNITS at the map scale 1:SYMBOLSCALEDENOM.

  • For lines, the first symbol will be placed GAP/2 from the start of the line.
  • For lines, a negative GAP value will cause the symbols’ X axis to be aligned relative to the tangent of the line.
  • For lines, a positive GAP value aligns the symbols’ X axis relative to the X axis of the output device.
  • For lines, a GAP of 0 (the default value) will cause the symbols to be rendered edge to edge
  • For polygons, a missing GAP or a GAP of 0 will cause the symbols to be rendered edge to edge.

Symbols can be rotated using ANGLE.

New in version 6.0: moved from SYMBOL

Note

The behaviour of GAP has not been stable over time. It has specified the amount of space between the symbols, and also something in between the amount of space between the symbols and the center to center distance. The goal is to have GAP specify the center to center distance, but in version 6.0 it is the amount of space between the symbols that is specified.

GEOMTRANSFORM [bbox|end|labelpnt|labelpoly|start|vertices]

Used to indicate that the current feature will be transformed before the actual style is applied. Introduced in version 5.4.

  • bbox: produces the bounding box of the current feature geometry.
  • end: produces the last point of the current feature geometry. When used with ANGLE AUTO, it can for instance be used to render arrowheads on line segments.
  • labelpnt: used for LABEL styles. Draws a marker on the geographic position the label is attached to. This corresponds to the center of the label text only if the label is in position CC.
  • labelpoly: used for LABEL styles. Produces a polygon that covers the label plus a 1 pixel padding.
  • start: produces the first point of the current feature geometry. When used with ANGLE AUTO, it can for instance be used to render arrow tails on line segments.
  • vertices: produces all the intermediate vertices (points) of the current feature geometry (the start and end are excluded). When used with ANGLE AUTO, the marker is oriented by the half angle formed by the two adjacent line segments.
LINECAP [butt|round|square]

Sets the line cap type for lines. Default is round. See Cartographical Symbol Construction with MapServer for explanation and examples.

New in version 6.0: moved from SYMBOL

LINEJOIN [round|miter|bevel]

Sets the line join type for lines. Default is round. See Cartographical Symbol Construction with MapServer for explanation and examples.

New in version 6.0: moved from SYMBOL

LINEJOINMAXSIZE [int]

Sets the max length of the miter LINEJOIN type. The value represents a coefficient which multiplies a current symbol size. Default is 3. See Cartographical Symbol Construction with MapServer for explanation and examples.

New in version 6.0: moved from SYMBOL

MAXSIZE [double]
Maximum size in pixels to draw a symbol. Default is 500. Starting from version 5.4, the value can also be a decimal value (and not only integer). See LAYER SYMBOLSCALEDENOM.
MAXWIDTH [double]
Maximum width in pixels to draw the line work. Default is 32. Starting from version 5.4, the value can also be a decimal value (and not only integer). See LAYER SYMBOLSCALEDENOM.
MINSIZE [double]
Minimum size in pixels to draw a symbol. Default is 0. Starting from version 5.4, the value can also be a decimal value (and not only integer). See LAYER SYMBOLSCALEDENOM.
MINWIDTH [double]
Minimum width in pixels to draw the line work. Default is 0. Starting from version 5.4, the value can also be a decimal value (and not only integer). See LAYER SYMBOLSCALEDENOM.
OFFSET [x][y]

Geometry offset values in layer SIZEUNITS.

When scaling of symbols is in effect (SYMBOLSCALEDENOM is specified for the LAYER), OFFSET gives offset values in layer SIZEUNITS at the map scale 1:SYMBOLSCALEDENOM.

An OFFSET of 20 40 will shift the geometry 20 SIZEUNITS to the left and 40 SIZEUNITS down before rendering.

For lines, an OFFSET of n -99 will produce a line geometry that is shifted n SIZEUNITS perpendicular to the original line geometry. A positive n shifts the line to the right when seen along the direction of the line. A negative n shifts the line to the left when seen along the direction of the line.

OPACITY [integer|attribute]

Opacity to draw the current style (applies to 5.2+, AGG Rendering Specifics only, does not apply to pixmap symbols)

  • [attribute] was introduced in version 5.6, to specify the attribute to use for opacity values.
OUTLINECOLOR [r] [g] [b] | [attribute]

Color to use for outlining polygons and certain marker symbols (ellipse, vector polygons and truetype). Has no effect for lines. The width of the outline can be specified using WIDTH. If no WIDTH is specified, an outline of one pixel will be drawn.

If there is a SYMBOL defined for the STYLE, the OUTLINECOLOR will be used to create an outline for that SYMBOL (only ellipse, truetype and polygon vector symbols will get an outline). If there is no SYMBOL defined for the STYLE, the polygon will get an outline.

  • r, g and b shall be integers [0..255]. To specify green, the following is used:

    OUTLINECOLOR 0 255 0
    WIDTH 3.0
    
  • [attribute] was introduced in version 5.0, to specify the attribute to use for color values. The hard brackets [] are required. For example, if your data set has an attribute named “MYPAINT” that holds color values for each record, use: object for might contain:

    OUTLINECOLOR [MYPAINT]
    

    The associated RFC document for this feature is MS RFC 19: Style & Label attribute binding.

PATTERN [double on] [double off] [double on] [double off] ... END

Currently used to defines a dash pattern for line work (lines, polygon outlines, ...). The numbers (doubles) specify the lengths of the dashes and gaps of the dash pattern in layer SIZEUNITS.

When scaling of symbols is in effect (SYMBOLSCALEDENOM is specified for the LAYER), the numbers specify the lengths of the dashes and gaps in layer SIZEUNITS at the map scale 1:SYMBOLSCALEDENOM.

To specify a dashed line that is 5 units wide, with dash lengths of 5 units and gaps of 5 units, the following style can be used:

STYLE
  COLOR 0 0 0
  WIDTH 5.0
  LINECAP BUTT
  PATTERN 5.0 5.0 END
END

New in version 6.0: moved from SYMBOL

SIZE [double|attribute]

Height, in layer SIZEUNITS, of the symbol/pattern to be used. Default value depends on the SYMBOL TYPE. For pixmap: the hight (in pixels) of the pixmap; for ellipse and vector: the maximum y value of the SYMBOL POINTS parameter, for hatch: 1.0, for truetype: 1.0.

When scaling of symbols is in effect (SYMBOLSCALEDENOM is specified for the LAYER), SIZE gives the height, in layer SIZEUNITS, of the symbol/pattern to be used at the map scale 1:SYMBOLSCALEDENOM.

  • For symbols of TYPE hatch, the SIZE is the center to center distance between the lines. For its use with hatched lines, see Example#8 in the symbology examples.

  • [attribute] was introduced in version 5.0, to specify the attribute to use for size values. The hard brackets [] are required. For example, if your data set has an attribute named “MYHIGHT” that holds size values for each feature, your STYLE object for hatched lines might contain:

    STYLE
      SYMBOL 'hatch-test'
      COLOR 255 0 0
      ANGLE 45
      SIZE [MYHIGHT]
      WIDTH 3.0
    END
    

    The associated RFC document for this feature is MS RFC 19: Style & Label attribute binding.

  • Starting from version 5.4, the value can also be a decimal value (and not only integer).

SIZEITEM [string]

SIZE [attribute] must now be used instead.

Deprecated since version 5.0.

SYMBOL [integer|string|filename|url|attribute]

The symbol to use for rendering the features.

  • Integer is the index of the symbol in the symbol set, starting at 1 (the 5th symbol is symbol number 5).

  • String is the name of the symbol (as defined using the SYMBOL NAME parameter).

  • Filename specifies the path to a file containing a symbol. For example a PNG file. Specify the path relative to the directory containing the mapfile.

  • URL specifies the address of a file containing a pixmap symbol. For example a PNG file. A URL must start with “http”:

    SYMBOL "http://myserver.org/path/to/file.png"

    New in version 6.0.

  • [attribute] allows individual rendering of features by using an attribute in the dataset that specifies the symbol name (as defined in the SYMBOL NAME parameter). The hard brackets [] are required.

    New in version 5.6.

If SYMBOL is not specified, the behaviour depends on the type of feature.

  • For points, nothing will be rendered.
  • For lines, SYMBOL is only relevant if you want to style the lines using symbols, so the absence of SYMBOL means that you will get lines as specified using the relevant line rendering parameters (COLOR, WIDTH, PATTERN, LINECAP, ...).
  • For polygons, the interior of the polygons will be rendered using a solid fill of the color specified in the COLOR parameter.

See also

SYMBOL

WIDTH [double|attribute]

WIDTH refers to the thickness of line work drawn, in layer SIZEUNITS. Default is 1.0.

When scaling of symbols is in effect (SYMBOLSCALEDENOM is specified for the LAYER), WIDTH refers to the thickness of the line work in layer SIZEUNITS at the map scale 1:SYMBOLSCALEDENOM.

  • If used with SYMBOL and OUTLINECOLOR, WIDTH specifies the width of the symbol outlines. This applies to SYMBOL TYPE vector (polygons), ellipse and truetype.
  • For lines, WIDTH specifies the width of the line.
  • For polygons, if used with OUTLINECOLOR, WIDTH specifies the thickness of the polygon outline.
  • For a symbol of SYMBOL TYPE hatch, WIDTH specifies the thickness of the hatched lines. For its use with hatched lines, see Example #7 in the symbology examples.
  • [attribute] was added in version 5.4 to specify the attribute to use for the width value. The hard brackets [] are required.
  • Starting from version 5.4, the value can also be a decimal value (and not only integer).