[gdal-dev] Need some help understanding why this raster is so big

[jratike80]

Hi,

You asked help for understanding, so

Check the size of the original image:
309153 x 277451
Check how many bands:
1
Check how many bits per pixel for each band:
32 bits (makes 4 bytes)

Multiply:
309153 x 277451 x 4 = number of bytes as uncompressed = 3.43099E+11 = 343 GB

Compare with the 120 MB that you have and make a conclusion that the
original is well compressed.

-Jukka Rahkonen-



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