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How to calculate sum pixel value from raster file?

Question asked by rupsab1 on Jun 26, 2017
Latest reply on Jun 26, 2017 by xander_bakker

I have one raster file of aerosol data and one shape file with state boundaries. I need to calculate the sum of aerosol pixel values for each state. Please let me know how to calculate sum pixel value for each state? Also do I need to clip or join the raster and shapefile before calculating the pixel value? Regards,Rupsa