Added support for empty messages (#960)

* Added support for empty messages * Format
facontidavide · Apr 22, 2024 · e659ad0 · e659ad0
1 parent e4f678b
commit e659ad0
Showing 1 changed file with 9 additions and 0 deletions.
diff --git a/plotjuggler_plugins/PluginsZcm/dataload_zcm.cpp b/plotjuggler_plugins/PluginsZcm/dataload_zcm.cpp
@@ -275,6 +275,15 @@ bool DataLoadZcm::readDataFromFile(FileLoadInfo* info, PlotDataMapRef& plot_data
       return;
     }
 
+    if (evt->datalen == 0)
+    {
+      auto itr = plot_data.numeric.find(evt->channel);
+      if (itr == plot_data.numeric.end())
+        itr = plot_data.addNumeric(evt->channel);
+      itr->second.pushBack({ (double)evt->timestamp / 1e6, 0 });
+      return;
+    }
+
     zcm::Introspection::processEncodedType(evt->channel, evt->data, evt->datalen, "/",
                                            types, processData, &usr);
     for (auto& n : usr.numerics)