Module: GDAL::RasterAttributeTable::Extensions

Included in:
GDAL::RasterAttributeTable
Defined in:
lib/gdal/extensions/raster_attribute_table/extensions.rb

Instance Method Summary collapse

Instance Method Details

#column(index) ⇒ Hash

Get column_name, column_usage, column_type as a Hash.

Parameters:

Returns:

  • (Hash) 


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# File 'lib/gdal/extensions/raster_attribute_table/extensions.rb', line 24

def column(index)
  {
    name: column_name(index),
    usage: column_usage(index),
    type: column_type(index)
  }
end

#columns ⇒ Array<Hash>

Returns:

  • (Array<Hash>) 


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# File 'lib/gdal/extensions/raster_attribute_table/extensions.rb', line 33

def columns
  each_column.to_a
end

#each_column {|| ... } ⇒ Enumerator

Yield Parameters:

  • (Hash)

Returns:

  • (Enumerator) 


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# File 'lib/gdal/extensions/raster_attribute_table/extensions.rb', line 39

def each_column
  return enum_for(:each_column) unless block_given?

  column_count.times { |i| yield column(i) }
end

#set_value(row, field, value) ⇒ Object

Parameters:



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# File 'lib/gdal/extensions/raster_attribute_table/extensions.rb', line 11

def set_value(row, field, value)
  case value.class
  when String then set_value_as_string(row, field, value)
  when Float then set_value_as_double(row, field, value)
  when Integer then set_value_as_integer(row, field, value)
  else raise GDAL::UnknownRasterAttributeTableType, "Unknown value type for value '#{value}'"
  end
end