class GDAL::VirtualDataset
Attributes
c_pointer[R]
Public Class Methods
new(x_size, y_size)
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# File lib/gdal/virtual_dataset.rb, line 12 def initialize(x_size, y_size) FFI::GDAL::VRT.GDALRegister_VRT @c_pointer = FFI::GDAL::VRT.VRTCreate(x_size, y_size) end
Public Instance Methods
add_band(data_type, **options)
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@param data_type [FFI::GDAL::GDAL::DataType] @param options [Hash] @return [Boolean]
# File lib/gdal/virtual_dataset.rb, line 31 def add_band(data_type, **options) options_ptr = GDAL::Options.pointer(options) FFI::GDAL::VRT.VRTAddBand(@c_pointer, data_type, options_ptr) end
add_complex_source(vrt_band, source_band, no_data_value, src_x_offset: 0, src_y_offset: 0, src_x_size: nil, src_y_size: nil, dst_x_offset: 0, dst_y_offset: 0, dst_x_size: nil, dst_y_size: nil, scale_offset: 0.0, scale_ratio: 0.0)
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@return [Boolean]
# File lib/gdal/virtual_dataset.rb, line 67 def add_complex_source(vrt_band, source_band, no_data_value, src_x_offset: 0, src_y_offset: 0, src_x_size: nil, src_y_size: nil, dst_x_offset: 0, dst_y_offset: 0, dst_x_size: nil, dst_y_size: nil, scale_offset: 0.0, scale_ratio: 0.0) FFI::GDAL::VRT.VRTAddComplexSource( vrt_band, source_band, # hSrcBand src_x_offset, # hSrcBand src_y_offset, # hSrcBand src_x_size, # hSrcBand src_y_size, # hSrcBand dst_x_offset, # hSrcBand dst_y_offset, # hSrcBand dst_x_size, # hSrcBand dst_y_size, # hSrcBand scale_offset, # dfScaleOff scale_ratio, # dfScaleRatio no_data_value # dfNoDataValue ) end
add_func_source(vrt_band, read_function, data, no_data_value)
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@param vrt_band [FFI::Pointer] @param read_function [Proc] @param data [FFI::Pointer] @param no_data_value [Float] @return [Boolean]
# File lib/gdal/virtual_dataset.rb, line 94 def add_func_source(vrt_band, read_function, data, no_data_value) FFI::GDAL::VRT.VRTAddFuncSource(vrt_band, read_function, data, no_data_value) end
add_simple_source(vrt_band, source_band, no_data_value, src_x_offset: 0, src_y_offset: 0, src_x_size: nil, src_y_size: nil, dst_x_offset: 0, dst_y_offset: 0, dst_x_size: nil, dst_y_size: nil, resampling: "")
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rubocop:disable Metrics/ParameterLists @return [Boolean]
# File lib/gdal/virtual_dataset.rb, line 46 def add_simple_source(vrt_band, source_band, no_data_value, src_x_offset: 0, src_y_offset: 0, src_x_size: nil, src_y_size: nil, dst_x_offset: 0, dst_y_offset: 0, dst_x_size: nil, dst_y_size: nil, resampling: "") FFI::GDAL::VRT.VRTAddSimpleSource( vrt_band, source_band, # hSrcBand src_x_offset, # hSrcBand src_y_offset, # hSrcBand src_x_size, # hSrcBand src_y_size, # hSrcBand dst_x_offset, # hSrcBand dst_y_offset, # hSrcBand dst_x_size, # hSrcBand dst_y_size, # hSrcBand resampling, # pszResampling, no_data_value # dfNoDataValue ) end
add_source(vrt_band, new_source)
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@param vrt_band [FFI::Pointer] @param new_source [FFI::Pointer] @return [Boolean] [description]
# File lib/gdal/virtual_dataset.rb, line 40 def add_source(vrt_band, new_source) FFI::GDAL::VRT.VRTAddSource(vrt_band, new_source) end
flush_cache()
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# File lib/gdal/virtual_dataset.rb, line 17 def flush_cache FFI::GDAL::VRT.VRTFlushCache(@c_pointer) end
to_xml(path = "")
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TODO: Build the xml string
# File lib/gdal/virtual_dataset.rb, line 22 def to_xml(path = "") xml_node = FFI::GDAL::VRT.VRTSerializeToXML(@c_pointer, path) FFI::CPL::MiniXML.CPLSerializeXMLTree(xml_node) end