Sha256: 2142e1dee559bb915252e04496d16ebcead1593ac24b7149efc5df047d964df2
Contents?: true
Size: 1.13 KB
Versions: 9
Compression:
Stored size: 1.13 KB
Contents
# frozen_string_literal: true
require 'spec_helper'
require 'gdal/dataset'
require 'gdal/raster_band'
RSpec.describe GDAL::RasterBand, type: :integration do
describe '#sieve_filter!' do
let(:source_image_path) { 'spec/support/images/osgeo/geotiff/zi_imaging/image0.tif' }
let(:dest_image_path) { 'tmp/image0.tif' }
before do
FileUtils.rm(dest_image_path) if File.exist?(dest_image_path)
FileUtils.cp(source_image_path, dest_image_path)
end
it 'removes some polygons' do
dataset = GDAL::Dataset.open(dest_image_path, 'w')
band = dataset.raster_band(1)
ogr_driver = OGR::Driver.by_name('Memory')
data_source = ogr_driver.create_data_source('meow')
layer_before = data_source.create_layer('before', spatial_reference: dataset.spatial_reference)
band.polygonize(layer_before)
band.sieve_filter!(1000, 4)
layer_after = data_source.create_layer('after', spatial_reference: dataset.spatial_reference)
band.polygonize(layer_after)
expect(layer_before.feature_count).to eq 62
expect(layer_after.feature_count).to eq 15
dataset.close
end
end
end
Version data entries
9 entries across 9 versions & 1 rubygems