"description": "Returns the maptip for a given feature in a layer. The expression is evaluated by default. Can be used with zero, one or more arguments, see below for details.",

"variants": [

"variant": "No parameters",

"variant_description": "If called with no parameters, the function will evaluate the maptip of the current feature in the current layer.",

"arguments": [],

"examples": [ { "expression": "maptip()", "returns" : "The maptip of the current feature in the current layer." } ]

"variant": "One 'feature' parameter",

"variant_description": "If called with a 'feature' parameter only, the function will evaluate the specified feature from the current layer.",

"arguments": [ { "arg": "feature", "description": "The feature which should be evaluated." } ],

"examples": [ { "expression": "maptip(@atlas_feature)", "returns": "The maptip of the current atlas feature." } ]

"variant" : "Layer and feature parameters",

"variant_description": "If the function is called with both a layer and a feature, it will evaluate the specified feature from the specified layer.",

"arguments": [

{ "arg": "layer", "description": "The layer (or its ID or name)" },

{ "arg": "feature", "description": "The feature which should be evaluated." },

{ "arg": "evaluate", "description": "If the expression must be evaluated. If false, the expression will be returned as a string literal only (which could potentially be later evaluated using the 'eval_template' function).", "optional": true, "default": "true" }

],

"examples": [

{ "expression": "maptip('streets', get_feature_by_id('streets', 1))",

"returns": "The maptip of the feature with the ID 1 on the layer 'streets'."

},

{ "expression": "maptip('a_layer_id', $currentfeature, 'False')",

"returns": "The maptip of the given feature not evaluated."

}

]