bug fix for older versions of matlab

Author: hivanov-nrel

mhkit/acoustics/analysis/apply_calibration.m

@@ -20,14 +20,19 @@
 
 arguments (Input)
     spsd struct
-    sensitivity_curve {mustBeMatrix}
+    sensitivity_curve
     fill_value {mustBeNumeric}
 end
 
 arguments (Output)
     spsd_cal struct
 end
 
+% check if sensitivity_curve is a matrix
+if ~ismatrix(sensitivity_curve) || size(sensitivity_curve,2) ~= 2
+    error('sensitivity_curve must be a matrix with two columns!')
+end
+
 % check if 'freq' exists in spsd
 if ~isfield(spsd, "freq")
     error('"freq" is missing in spsd!')