画像情報を表示する
gdalinfo canada_mosaic_lcc_1000m.tif
Driver: GTiff/GeoTIFF --------(GeoTIFF フォーマット)
Files: canada_mosaic_lcc_1000m.tif
Size is 5700, 4800 -------------(x, y)つまり左上(1,1)から(列、行)
Coordinate System is:
PROJCS["LCC E008", ------- LCC(ランベルト等角円錐図法)
GEOGCS["NAD83",
DATUM["North_American_Datum_1983",
SPHEROID["GRS 1980",6378137,298.2572221010002,
AUTHORITY["EPSG","7019"]],
AUTHORITY["EPSG","6269"]],
PRIMEM["Greenwich",0],
UNIT["degree",0.0174532925199433],
AUTHORITY["EPSG","4269"]],
PROJECTION["Lambert_Conformal_Conic_2SP"],
PARAMETER["standard_parallel_1",49],
PARAMETER["standard_parallel_2",77],
PARAMETER["latitude_of_origin",0],------ 原点緯度0
PARAMETER["central_meridian",-95], ----- 中央子午線
PARAMETER["false_easting",0],
PARAMETER["false_northing",0],
UNIT["metre",1,
AUTHORITY["EPSG","9001"]]]
Origin = (-2600000.000000000000000,10500000.000000000000000)
----- 中央子午線から-2600000m(西へ2600000), 北へ10500000m
Pixel Size = (1000.000000000000000,-1000.000000000000000) ----- セル画素 1000m x 1000m の正方形画像
Metadata:
AREA_OR_POINT=Area
Image Structure Metadata:
INTERLEAVE=BAND
Corner Coordinates: ----- 以下４隅の座標を示す。
Upper Left (-2600000.000,10500000.000) (177d17'32.31"W, 66d54'22.82"N)
Lower Left (-2600000.000, 5700000.000) (122d54'49.00"W, 36d12'53.87"N)
Upper Right ( 3100000.000,10500000.000) ( 9d58'39.57"W, 62d25'50.45"N)
Lower Right ( 3100000.000, 5700000.000) ( 62d32'49.65"W, 34d18'5.61"N)
Center ( 250000.000, 8100000.000) ( 89d56'43.00"W, 62d46'47.18"N)
Band 1 Block=5700x1 Type=Byte, ColorInterp=Gray
--- Byte(8bit 256色)
--- ColorInterp=Gray(Gray Scale)