I have NDVI raster data from the MOD13Q1 product. I have uploaded it into the PostGIS using
raster2pgsql -s 3857 -I -c C:\Users\xxxx\MOD13Q1.A2013001.NDVI.crs3857.tif public.ndvi_2013001 | psql -h localhost -p 5433 -U postgres -d test command.
Then I opened the two raster files (uploaded one: ndvi_2013001 and original one:MOD13Q1.A2013001.NDVI.crs3857.tif) in QGIS. I found that two files have different max and min band values.
I have checked the following issues:
There is only one band for these two files.
The CRS are the same of ESPG:3857. I want to use this CRS because I want to perform zonal statistics by buffers in meters.
The size of the two files are the same 1212*1489.
Could anyone help me to have a look at this issue?