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When to use the auto keyword in MapServer?
Given in pixels. For line data the overall length of the displayed line is used, for polygons features the smallest dimension of the bounding box is used. “Auto” keyword tells MapServer to only label features that are larger than their corresponding label. Available for cached labels only.
What kind of encoding is used in MapServer 7.0?
Removed in version 7.0: UTF-8 is now the encoding used by MapServer, and dataset encodings are handled using LAYER ENCODING instead. Supported encoding format to be used for labels. If the format is not supported, the label will not be drawn. Requires the iconv library (present on most systems).
Are there language specific fonts in MapServer 7?
Since version 7, MapServer supports language specific fonts. See MS RFC 98: Label/Text Rendering Overhaul. Forces labels for a particular class on, regardless of collisions. Available only for cached labels. Default is false. If FORCE is true and PARTIALS is false, FORCE takes precedence, and partial labels are drawn.
When was follow introduced in MS MapServer version 4.10?
FOLLOW was introduced in version 4.10 and tells MapServer to compute a curved label for appropriate linear features (see MS RFC 11: Support for Curved Labels for specifics). See also MAXOVERLAPANGLE. [ Attribute] was introduced in version 5.0, to specify the item name in the attribute table to use for angle values.
How does MapServer work with a mapfile?
When a request is sent to MapServer, it uses information passed in the request URL and the Mapfile to create an image of the requested map. The request may also return images for legends, scale bars, reference maps, and values passed as CGI variables. MapServer can be extended and customized through MapScript or templating.
What can I do with a pre compiled MapServer?
MapServer can be extended and customized through MapScript or templating. It can be built to support many different vector and raster input data formats, and it can generate a multitude of output formats. Most pre-compiled MapServer distributions contain most all of its features.
Which is deprecated version of MapServer 7.0?
Requires MapServer to be built with the DEBUG=MSDEBUG option (–with-debug configure option). Deprecated since version 6.0: use LAYER METADATA instead. Switch to allow MapServer to return data in GML format. Useful when used with WMS GetFeatureInfo operations. “false” by default. New in version 7.0.
How is expression check used in MapServer 7.6?
The first class that matches the its min/max scale constraints and its EXPRESSION check for the current feature will be used for rendering. This can be controlled with RENDERMODE processing directive. Specify the class’s group that would be considered at rendering time.
Which is the native filter key in MapServer?
Signals the start of a FEATURE object. This parameter allows for data specific attribute filtering that is done at the same time spatial filtering is done, but before any CLASS expressions are evaluated. The string is simply a MapServer expression: Native filters are supported through the NATIVE_FILTER PROCESSING key: FILTER ‘where id=234’.
When to use the group parameter in MapServer?
The CLASS object’s GROUP parameter must be used in combination with CLASSGROUP. Item name in attribute table to use for class lookups. Signals the start of a CLUSTER object. The CLUSTER configuration option provides to combine multiple features from the layer into single (aggregated) features based on their relative positions.
Can a string be used as a filter in MapServer?
The string is simply a MapServer expression: Native filters are supported through the NATIVE_FILTER PROCESSING key: FILTER ‘where id=234’. But this is no longer supported. Item to use with simple FILTER expressions. OGR and shapefiles only. Template to use after a layer’s set of results have been sent. Multiresult query modes only.