Add missing to Encoding of Levtype iceLayerOnWater (#44)

Author: stefaniereuter

Diff for: src/multio/action/encode/GribEncoder.cc

@@ -277,6 +277,16 @@ void setSoilLayerTypeOfLevel(GribEncoder& g, const std::string& typeOfLevel, lon
     g.setValue("scaledValueOfSecondFixedSurface", level);
 }
 
+void setMissingFixedSurface(GribEncoder& g, const std::string& typeOfLevel, long level) {
+    g.setValue("typeOfLevel", typeOfLevel);
+
+    g.setMissing(glossary().scaleFactorOfFirstFixedSurface);
+    g.setMissing(glossary().scaledValueOfFirstFixedSurface);
+    g.setMissing(glossary().scaleFactorOfSecondFixedSurface);
+    g.setMissing(glossary().scaledValueOfSecondFixedSurface);
+
+}
+
 using TypeOfLevelSetter = std::function<void(GribEncoder&, const std::string&, long)>;
 
 const std::map<std::string, TypeOfLevelSetter> typeOfLevelSetters{
@@ -287,9 +297,9 @@ const std::map<std::string, TypeOfLevelSetter> typeOfLevelSetters{
     {"lowCloudLayer", &setLevelUnrelatedTypeOfLevel},
     {"highCloudLayer", &setLevelUnrelatedTypeOfLevel},
     {"meanSea", &setLevelUnrelatedTypeOfLevel},
+    {"iceLayerOnWater", &setMissingFixedSurface},
 };
 
-
 template <typename Dict>
 QueriedMarsKeys setMarsKeys(GribEncoder& g, const Dict& md) {
     QueriedMarsKeys ret;
@@ -849,6 +859,7 @@ void GribEncoder::setOceanMetadata(message::Metadata& md) {
         setValue("scaleFactorOfFirstFixedSurface", 0l);
     }
 
+
     std::string gridType;
     const auto searchGridType = md.find(glossary().gridType);
     if (searchGridType != md.end() && searchGridType->second.get<std::string>() == "unstructured_grid") {