temperature area from thermal IR data

Discussion created by calquaddoomi on Feb 5, 2013

I have two data sets, the first is raster Thermal IR data of a harbor, the second is polygons of harbor shoreline  (.shp file).  I would like to determine the area of each temperature in the polygons from the thermal data.  For instance, in each polygon how many pixels are of 16 degrees, and so on.  This would then be converted to square meters of each temp in the polygon.  I know a long roundabout way to do this, by clipping the thermal data to the extent of the polygon but is there a faster way? 

Any help is appreciated, I am a novice user!