Python neginf Examples

Example #1

def stats_nodata_inf():

    ds = gdal.GetDriverByName('HFA').Create('/vsimem/stats_nodata_inf.img', 3, 1, 1, gdal.GDT_Float32)
    ds.GetRasterBand(1).SetNoDataValue(gdaltest.neginf())
    ds.GetRasterBand(1).WriteRaster(0, 0, 1, 1, struct.pack('f', gdaltest.neginf()), buf_type=gdal.GDT_Float32)
    ds.GetRasterBand(1).WriteRaster(1, 0, 1, 1, struct.pack('f', 1), buf_type=gdal.GDT_Float32)
    ds.GetRasterBand(1).WriteRaster(2, 0, 1, 1, struct.pack('f', -2), buf_type=gdal.GDT_Float32)

    ds.GetRasterBand(1).Checksum()
    user_data = [0]
    stats = ds.GetRasterBand(1).ComputeStatistics(False, stats_nodata_inf_progress_cbk, user_data)
    if user_data[0] != 1.0:
        gdaltest.post_reason('did not get expected pct')
        print(user_data[0])
        return 'fail'
    ds = None

    gdal.GetDriverByName('HFA').Delete('/vsimem/stats_nodata_inf.img')

    if stats != [-2.0, 1.0, -0.5, 1.5]:
        gdaltest.post_reason('did not get expected stats')
        print(stats)
        return 'fail'

    return 'success'

Example #2

File: gdal_stats.py Project: ksshannon/gdal

def stats_nodata_inf():

    ds = gdal.GetDriverByName('HFA').Create('/vsimem/stats_nodata_inf.img', 3, 1, 1, gdal.GDT_Float32)
    ds.GetRasterBand(1).SetNoDataValue(gdaltest.neginf())
    ds.GetRasterBand(1).WriteRaster(0, 0, 1, 1, struct.pack('f', gdaltest.neginf()), buf_type=gdal.GDT_Float32)
    ds.GetRasterBand(1).WriteRaster(1, 0, 1, 1, struct.pack('f', 1), buf_type=gdal.GDT_Float32)
    ds.GetRasterBand(1).WriteRaster(2, 0, 1, 1, struct.pack('f', -2), buf_type=gdal.GDT_Float32)

    ds.GetRasterBand(1).Checksum()
    user_data = [0]
    stats = ds.GetRasterBand(1).ComputeStatistics(False, stats_nodata_inf_progress_cbk, user_data)
    if user_data[0] != 1.0:
        gdaltest.post_reason('did not get expected pct')
        print(user_data[0])
        return 'fail'
    ds = None

    gdal.GetDriverByName('HFA').Delete('/vsimem/stats_nodata_inf.img')

    if stats != [-2.0, 1.0, -0.5, 1.5]:
        gdaltest.post_reason('did not get expected stats')
        print(stats)
        return 'fail'

    return 'success'

Example #3

File: gdal_stats.py Project: fossabot/gdal_test

def test_stats_nodata_inf():

    ds = gdal.GetDriverByName('HFA').Create('/vsimem/stats_nodata_inf.img', 3,
                                            1, 1, gdal.GDT_Float32)
    ds.GetRasterBand(1).SetNoDataValue(gdaltest.neginf())
    ds.GetRasterBand(1).WriteRaster(0,
                                    0,
                                    1,
                                    1,
                                    struct.pack('f', gdaltest.neginf()),
                                    buf_type=gdal.GDT_Float32)
    ds.GetRasterBand(1).WriteRaster(1,
                                    0,
                                    1,
                                    1,
                                    struct.pack('f', 1),
                                    buf_type=gdal.GDT_Float32)
    ds.GetRasterBand(1).WriteRaster(2,
                                    0,
                                    1,
                                    1,
                                    struct.pack('f', -2),
                                    buf_type=gdal.GDT_Float32)

    ds.GetRasterBand(1).Checksum()
    user_data = [0]
    stats = ds.GetRasterBand(1).ComputeStatistics(
        False, stats_nodata_inf_progress_cbk, user_data)
    assert user_data[0] == 1.0, 'did not get expected pct'
    ds = None

    gdal.GetDriverByName('HFA').Delete('/vsimem/stats_nodata_inf.img')

    assert stats == [-2.0, 1.0, -0.5, 1.5], 'did not get expected stats'

Example #4

File: gdal_stats.py Project: AsgerPetersen/gdal

def test_stats_nodata_inf():

    ds = gdal.GetDriverByName('HFA').Create('/vsimem/stats_nodata_inf.img', 3, 1, 1, gdal.GDT_Float32)
    ds.GetRasterBand(1).SetNoDataValue(gdaltest.neginf())
    ds.GetRasterBand(1).WriteRaster(0, 0, 1, 1, struct.pack('f', gdaltest.neginf()), buf_type=gdal.GDT_Float32)
    ds.GetRasterBand(1).WriteRaster(1, 0, 1, 1, struct.pack('f', 1), buf_type=gdal.GDT_Float32)
    ds.GetRasterBand(1).WriteRaster(2, 0, 1, 1, struct.pack('f', -2), buf_type=gdal.GDT_Float32)

    ds.GetRasterBand(1).Checksum()
    user_data = [0]
    stats = ds.GetRasterBand(1).ComputeStatistics(False, stats_nodata_inf_progress_cbk, user_data)
    assert user_data[0] == 1.0, 'did not get expected pct'
    ds = None

    gdal.GetDriverByName('HFA').Delete('/vsimem/stats_nodata_inf.img')

    assert stats == [-2.0, 1.0, -0.5, 1.5], 'did not get expected stats'

Example #5

File: gdal_stats.py Project: drons/gdal

def stats_nodata_inf():

    ds = gdal.GetDriverByName("HFA").Create("/vsimem/stats_nodata_inf.img", 3, 1, 1, gdal.GDT_Float32)
    ds.GetRasterBand(1).SetNoDataValue(gdaltest.neginf())
    import struct

    ds.GetRasterBand(1).WriteRaster(0, 0, 1, 1, struct.pack("f", gdaltest.neginf()), buf_type=gdal.GDT_Float32)
    ds.GetRasterBand(1).WriteRaster(1, 0, 1, 1, struct.pack("f", 1), buf_type=gdal.GDT_Float32)
    ds.GetRasterBand(1).WriteRaster(2, 0, 1, 1, struct.pack("f", -2), buf_type=gdal.GDT_Float32)

    ds.GetRasterBand(1).Checksum()
    stats = ds.GetRasterBand(1).ComputeStatistics(False)
    ds = None

    gdal.GetDriverByName("HFA").Delete("/vsimem/stats_nodata_inf.img")

    if stats != [-2.0, 1.0, -0.5, 1.5]:
        gdaltest.post_reason("did not get expected stats")
        print(stats)
        return "fail"

    return "success"

Example #6

File: gdal_stats.py Project: ryandavid/rotobox

def stats_nodata_neginf_msvc():
    return stats_nodata_check('data/stats_nodata_neginf_msvc.tif', gdaltest.neginf())

Example #7

File: gdal_stats.py Project: ryandavid/rotobox

def stats_nodata_neginf_linux():
    return stats_nodata_check('data/stats_nodata_neginf.tif', gdaltest.neginf())

Example #8

def stats_nodata_neginf_msvc():
    return stats_nodata_check('data/stats_nodata_neginf_msvc.tif', gdaltest.neginf())

Example #9

def stats_nodata_neginf_linux():
    return stats_nodata_check('data/stats_nodata_neginf.tif', gdaltest.neginf())