def METHOD_NAME(atr):
    X_FIRST = float(atr['X_FIRST'])
    Y_FIRST = float(atr['Y_FIRST'])
    X_STEP = float(atr['X_STEP'])
    Y_STEP = float(atr['Y_STEP'])
    W = int(atr['WIDTH'])
    L = int(atr['LENGTH'])
    Y_END = Y_FIRST + L * Y_STEP
    X_END = X_FIRST + W * X_STEP
    X = np.linspace(X_FIRST, X_END, W)
    Y = np.linspace(Y_FIRST, Y_END, L)
    return Y, X