Minor changes

Issue #492

src/AudioAnalysisTools/StandardSpectrograms/SpectrogramCepstral.cs

@@ -76,7 +76,7 @@ public override void Make(double[,] amplitudeM)
             if (bandCount > fftBinCount)
             {
                 throw new Exception(
-                    "## FATAL ERROR in BaseSonogram.MakeCepstrogram():- Can't calculate cepstral coefficients. Filterbank Count > number of FFT bins. (" +
+                    "## FATAL ERROR in BaseSonogram.MakeCepstrogram():- Cannot prepare filterbank. Filter count > number of FFT bins. (" +
                     bandCount + " > " + fftBinCount + ")\n\n");
             }
 

src/TowseyLibrary/DataTools.cs

@@ -1664,6 +1664,13 @@ public static void writeArray(bool[] array)
             }
         }
 
+        /// <summary>
+        /// The format string should be as follows: "0.00" for two decimal places.
+        /// For more detail on custom numeric format string,
+        /// see https://docs.microsoft.com/en-us/dotnet/standard/base-types/custom-numeric-format-strings.
+        /// </summary>
+        /// <param name="array">an array of double.</param>
+        /// <param name="format">format string.</param>
         public static string WriteArrayAsCsvLine(double[] array, string format)
         {
             var sb = new StringBuilder(array[0].ToString(format));

src/TowseyLibrary/FileTools.cs

@@ -565,6 +565,12 @@ public static void WriteMatrix2File(char[,] matrix, string fName)
             WriteTextFile(fName, lines); //write matrix to file
         } //end of WriteMatrix2File\
 
+        /// <summary>
+        /// The format string should be as follows: "0.00" for two decimal places,
+        /// where number of zeros after the point is the number of decimal places.
+        /// For more detail on custom numeric format string,
+        /// see https://docs.microsoft.com/en-us/dotnet/standard/base-types/custom-numeric-format-strings.
+        /// </summary>
         public static void WriteMatrix2File_Formatted(double[,] matrix, string fName, string formatString)
         {
             int rowCount = matrix.GetLength(0); //height
@@ -590,6 +596,12 @@ public static void WriteMatrix2File_Formatted(double[,] matrix, string fName, st
             WriteTextFile(fName, lines); //write matrix to file
         } //end of WriteMatrix2File
 
+        /// <summary>
+        /// The format string should be as follows: "0.00" for two decimal places,
+        /// where number of zeros after the point is the number of decimal places.
+        /// For more detail on custom numeric format string,
+        /// see https://docs.microsoft.com/en-us/dotnet/standard/base-types/custom-numeric-format-strings.
+        /// </summary>
         public static void WriteArray2File_Formatted(double[] array, string path, string formatString)
         {
             int length = array.Length;
@@ -604,6 +616,12 @@ public static void WriteArray2File_Formatted(double[] array, string path, string
             WriteTextFile(path, lines); //write matrix to file
         } //end of WriteArray2File_Formatted
 
+        /// <summary>
+        /// The format string should be as follows: "0.00" for two decimal places,
+        /// where number of zeros after the point is the number of decimal places.
+        /// For more detail on custom numeric format string,
+        /// see https://docs.microsoft.com/en-us/dotnet/standard/base-types/custom-numeric-format-strings.
+        /// </summary>
         public static void WriteArray2File_Formatted(int[] array, string path, string formatString)
         {
             int length = array.Length;