node-gdal node-gdal

  • API Docs for Version: 0.11.0

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    gdal.LayerFeatures

    An encapsulation of a Layer's features.

    Table of Contents

    Methods

    add
    (
    • feature
    )

    Defined in src/collections/layer_features.cpp:164

    Adds a feature to the layer. The feature should be created using the current layer as the definition.

    Parameters:

    Example:

    var feature = new gdal.Feature(layer);
feature.setGeometry(new gdal.Point(0, 1));
feature.fields.set('name', 'somestring');
layer.features.add(feature);`
    count
    (
    • force=true
    )
    Integer

    Defined in src/collections/layer_features.cpp:200

    Returns the number of features in the layer.

    Parameters:

    • [force=true] Boolean optional

    Returns:

    Integer:

    Number of features in the layer.

    first () gdal.Feature

    Defined in src/collections/layer_features.cpp:114

    Resets the feature pointer used by next() and returns the first feature in the layer.

    Returns:

    gdal.Feature
    forEach
    (
    • callback
    )

    Defined in lib/gdal.js:142

    Iterates through all features using a callback function.

    Parameters:

    • callback Function

      The callback to be called with each Feature

    Example:

    layer.features.forEach(function(feature, i) { ... });`
    get
    (
    • id
    )
    gdal.Feature

    Defined in src/collections/layer_features.cpp:86

    Fetch a feature by its identifier.

    Important: The id argument is not an index. In most cases it will be zero-based, but in some cases it will not. If iterating, it's best to use the next() method.

    Parameters:

    • id Integer

      The feature ID of the feature to read.

    Returns:

    gdal.Feature
    map
    (
    • callback
    )

    Defined in lib/gdal.js:162

    Iterates through all features using a callback function and builds an array of the returned values.

    Parameters:

    • callback Function

      The callback to be called with each Feature

    Example:

    var result = layer.features.map(function(band, i) {
    return value;
});`
    next () gdal.Feature

    Defined in src/collections/layer_features.cpp:138

    Returns the next feature in the layer. Returns null if no more features.

    Returns:

    gdal.Feature

    Example:

    while (feature = layer.features.next()) { ... }`
    remove
    (
    • id
    )

    Defined in src/collections/layer_features.cpp:275

    Removes a feature from the layer.

    Parameters:

    • id Integer
    set
    (
    • id
    • feature
    )

    Defined in src/collections/layer_features.cpp:224

    Sets a feature in the layer.

    Parameters:

    Attributes

    layer

    gdal.Layer

    Defined in src/collections/layer_features.cpp:304

    Parent layer