#used to read in project data (eg: sced=3) using a text file
function readData(filename, data, model) {
	while ((getline < "grammars/data.txt")) {
		if ($1 ~ /^[ /t]*#/) { continue } #skip comments
		if ($0 ~ /^[ /t]*$/) { continue } #skip blank lines
		
		#is this a valid key from the model?
		#is the range provided within bounds?
		if(model[getAlias($2)]) {
			if(index(model[getKeys()], $1)) { 
				if (model[getAlias($2)] >= model[getRangeMin($1)]) {
					if (model[getAlias($2)] <= model[getRangeMax($1)]) {
						data[getRating($1)] = model[getAlias($2)]
					}
					else {err($2 " is above the allowed range for " $1)}
				}
				else {err($2 " is below the allowed range for " $1 )}
			}
			else {err("key named \"" $1 "\" in input data not found in model")}
		} else {err("input value of " $2 " not a valid value for " $1)}

	}
	close("grammars/data.txt")
}