Amending SPE channel count calculation to reflect clearer documentation

radixio/spectrumspestream.i.hh

@@ -199,7 +199,7 @@ bool SpectrumSPEStream<data_type>::write_to(const std::string &file) const
     radix_line("    number of channels:           " << numberOfChannels);
     radix_line("    counts by channel array size: " << countsByChannel.size());
     fprintf(stream, "$DATA:\n");
-    fprintf(stream, "0    %d\n", numberOfChannels);
+    fprintf(stream, "0    %d\n", numberOfChannels - 1);
     for (int i = 0; i < countsByChannel.size(); ++i)
     {
       fprintf(stream, "%d\n", int(countsByChannel[i]));
@@ -307,8 +307,13 @@ void SpectrumSPEStream<data_type>::readData(std::ifstream &stream,
                                                           << ") - returning");
     return;
   }
-  firstChannel = std::stoi(trim_string(parts[0]));
-  totalEntries = std::stoi(trim_string(parts[1]));
+  firstChannel    = std::stoi(trim_string(parts[0]));
+  int lastChannel = std::stoi(trim_string(parts[1]));
+  totalEntries    = lastChannel - firstChannel + 1;
+  radix_line("    Reading channel data:");
+  radix_line("      first channel:      " << firstChannel);
+  radix_line("      last channel:       " << lastChannel);
+  radix_line("      number of channels: " << totalEntries);
   // Read the rest of the entries
   radix("    ");
   for (int entry = 0; entry < totalEntries; ++entry)