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Contents
# frozen_string_literal: true
require 'json'
module GDAL
module RasterBandMixins
module Extensions
# @return [Enumerator]
def each_overview
return enum_for(:each_overview) unless block_given?
overview_count.times do |i|
yield overview(i)
end
end
# @return [Array]
def overviews
eaach_overview.to_a
end
# @return [Array]
def to_a
read_lines_by_block.to_a
end
# Iterates through all lines and builds an NArray of pixels.
#
# @return [NArray]
def to_na(to_data_type = nil)
narray = NArray.to_na(to_a)
return narray unless to_data_type
narray_type = GDAL._gdal_data_type_to_narray_type_constant(to_data_type)
narray.to_type(narray_type)
end
def to_nna
Numo::NArray[to_a]
end
# Each pixel of the raster projected using the dataset's geo_transform.
# The output NArray is a 3D array where the inner-most array is a the
# lat an lon, those are contained in an array per pixel line, and finally
# the outter array contains each of the pixel lines.
#
# @return [NArray]
def projected_points
narray = GDAL._narray_from_data_type(data_type, 2, x_size, y_size)
geo_transform = dataset.geo_transform
y_size.times do |y_point|
x_size.times do |x_point|
coords = geo_transform.apply_geo_transform(x_point, y_point)
narray[0, x_point, y_point] = coords[:x_geo] || 0
narray[1, x_point, y_point] = coords[:y_geo] || 0
end
end
narray
end
# The total number of pixels in the raster band.
#
# @return [Fixnum]
def pixel_count
x_size * y_size
end
end
end
end
Version data entries
8 entries across 8 versions & 1 rubygems