Loads and parses the .dem.rsc file
Args:
filename (str) path to either the .dem or .dem.rsc file.
Function will add .rsc to path if passed .dem file
lower (bool): make keys of the dict lowercase
Returns:
dict: dem.rsc file parsed out, keys are all caps
example file:
WIDTH 10801
FILE_LENGTH 7201
X_FIRST -157.0
Y_FIRST 21.0
X_STEP 0.000277777777
Y_STEP -0.000277777777
X_UNIT degrees
Y_UNIT degrees
Z_OFFSET 0
Z_SCALE 1
PROJECTION LL