diff --git a/meteoinfo-chart/pom.xml b/meteoinfo-chart/pom.xml
index c4bb8b6a..47511c77 100644
--- a/meteoinfo-chart/pom.xml
+++ b/meteoinfo-chart/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>MeteoInfo</artifactId>
         <groupId>org.meteothink</groupId>
-        <version>3.1.7</version>
+        <version>3.2.0</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/meteoinfo-common/pom.xml b/meteoinfo-common/pom.xml
index 127954f4..678e1f81 100644
--- a/meteoinfo-common/pom.xml
+++ b/meteoinfo-common/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>MeteoInfo</artifactId>
         <groupId>org.meteothink</groupId>
-        <version>3.1.7</version>
+        <version>3.2.0</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/meteoinfo-common/src/main/java/org/meteoinfo/common/util/GlobalUtil.java b/meteoinfo-common/src/main/java/org/meteoinfo/common/util/GlobalUtil.java
index b96afdc3..ea547b38 100644
--- a/meteoinfo-common/src/main/java/org/meteoinfo/common/util/GlobalUtil.java
+++ b/meteoinfo-common/src/main/java/org/meteoinfo/common/util/GlobalUtil.java
@@ -65,7 +65,7 @@ import java.util.zip.ZipInputStream;
      public static String getVersion(){
          String version = GlobalUtil.class.getPackage().getImplementationVersion();
          if (version == null || version.equals("")) {
-             version = "3.1.7";
+             version = "3.2.0";
          }
          return version;
      }
diff --git a/meteoinfo-console/pom.xml b/meteoinfo-console/pom.xml
index 2dee3fdd..36153bf7 100644
--- a/meteoinfo-console/pom.xml
+++ b/meteoinfo-console/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>MeteoInfo</artifactId>
         <groupId>org.meteothink</groupId>
-        <version>3.1.7</version>
+        <version>3.2.0</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/meteoinfo-data/pom.xml b/meteoinfo-data/pom.xml
index acd3c73d..0ae5b09a 100644
--- a/meteoinfo-data/pom.xml
+++ b/meteoinfo-data/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>MeteoInfo</artifactId>
         <groupId>org.meteothink</groupId>
-        <version>3.1.7</version>
+        <version>3.2.0</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/meteoinfo-dataframe/pom.xml b/meteoinfo-dataframe/pom.xml
index 64272082..bfe69c75 100644
--- a/meteoinfo-dataframe/pom.xml
+++ b/meteoinfo-dataframe/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>MeteoInfo</artifactId>
         <groupId>org.meteothink</groupId>
-        <version>3.1.7</version>
+        <version>3.2.0</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/meteoinfo-geo/pom.xml b/meteoinfo-geo/pom.xml
index 1a96ac7d..b985a2c7 100644
--- a/meteoinfo-geo/pom.xml
+++ b/meteoinfo-geo/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>MeteoInfo</artifactId>
         <groupId>org.meteothink</groupId>
-        <version>3.1.7</version>
+        <version>3.2.0</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/meteoinfo-geometry/pom.xml b/meteoinfo-geometry/pom.xml
index 21c12b58..407194c8 100644
--- a/meteoinfo-geometry/pom.xml
+++ b/meteoinfo-geometry/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>MeteoInfo</artifactId>
         <groupId>org.meteothink</groupId>
-        <version>3.1.7</version>
+        <version>3.2.0</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/meteoinfo-image/pom.xml b/meteoinfo-image/pom.xml
index 0bb21b6b..cde92789 100644
--- a/meteoinfo-image/pom.xml
+++ b/meteoinfo-image/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>MeteoInfo</artifactId>
         <groupId>org.meteothink</groupId>
-        <version>3.1.7</version>
+        <version>3.2.0</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/meteoinfo-lab/milconfig.xml b/meteoinfo-lab/milconfig.xml
index b87b3d2a..ef9cbc84 100644
--- a/meteoinfo-lab/milconfig.xml
+++ b/meteoinfo-lab/milconfig.xml
@@ -1,21 +1,21 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <MeteoInfo File="milconfig.xml" Type="configurefile">
-  <Path OpenPath="D:\Working\MIScript\Jython\mis\plot_types\3d\jogl">
-    <RecentFolder Folder="D:\Temp\test\emission"/>
-    <RecentFolder Folder="D:\Working\MIScript\Jython\mis\toolbox"/>
-    <RecentFolder Folder="D:\Working\MIScript\Jython\mis\toolbox\verification"/>
+  <Path OpenPath="D:\Working\MIScript\Jython\mis\io">
     <RecentFolder Folder="D:\Working\MIScript\Jython\mis\plot_types\3d"/>
     <RecentFolder Folder="D:\Working\MIScript\Jython\mis\traj"/>
     <RecentFolder Folder="D:\Working\MIScript\Jython\mis\map"/>
     <RecentFolder Folder="D:\Working\MIScript\Jython\mis\map\projection"/>
     <RecentFolder Folder="D:\Working\MIScript\Jython\mis\chart\axes"/>
     <RecentFolder Folder="D:\Working\MIScript\Jython\mis\chart"/>
-    <RecentFolder Folder="D:\Working\MIScript\Jython\mis"/>
     <RecentFolder Folder="D:\Working\MIScript\Jython\mis\plot_types\pie"/>
     <RecentFolder Folder="D:\Working\MIScript\Jython\mis\plot_types"/>
     <RecentFolder Folder="D:\Working\MIScript\Jython\mis\plot_types\polar"/>
     <RecentFolder Folder="D:\Working\MIScript\Jython\mis\array"/>
     <RecentFolder Folder="D:\Working\MIScript\Jython\mis\plot_types\3d\jogl"/>
+    <RecentFolder Folder="D:\Temp\test\emission"/>
+    <RecentFolder Folder="D:\Working\MIScript\Jython\mis\netcdf"/>
+    <RecentFolder Folder="D:\Working\MIScript\Jython\mis"/>
+    <RecentFolder Folder="D:\Working\MIScript\Jython\mis\io"/>
   </Path>
   <File>
     <OpenedFiles>
@@ -23,12 +23,18 @@
       <OpenedFile File="D:\Working\MIScript\Jython\mis\plot_types\3d\jogl\surf_sphere.py"/>
       <OpenedFile File="D:\Working\MIScript\Jython\mis\plot_types\3d\jogl\mesh_peaks.py"/>
       <OpenedFile File="D:\Working\MIScript\Jython\mis\plot_types\3d\jogl\surf_cylinder_1.py"/>
+      <OpenedFile File="D:\Temp\test\emission\proj_nc4.py"/>
+      <OpenedFile File="D:\Temp\test\emission\test_read_wrfchem.py"/>
+      <OpenedFile File="D:\Working\MIScript\Jython\mis\io\ncwrite_nc4.py"/>
     </OpenedFiles>
     <RecentFiles>
       <RecentFile File="D:\Working\MIScript\Jython\mis\toolbox\miml\deep_learning\classification\saturn.py"/>
       <RecentFile File="D:\Working\MIScript\Jython\mis\plot_types\3d\jogl\surf_sphere.py"/>
       <RecentFile File="D:\Working\MIScript\Jython\mis\plot_types\3d\jogl\mesh_peaks.py"/>
       <RecentFile File="D:\Working\MIScript\Jython\mis\plot_types\3d\jogl\surf_cylinder_1.py"/>
+      <RecentFile File="D:\Temp\test\emission\proj_nc4.py"/>
+      <RecentFile File="D:\Temp\test\emission\test_read_wrfchem.py"/>
+      <RecentFile File="D:\Working\MIScript\Jython\mis\io\ncwrite_nc4.py"/>
     </RecentFiles>
   </File>
   <Font>
@@ -36,5 +42,5 @@
   </Font>
   <LookFeel DockWindowDecorated="true" LafDecorated="true" Name="FlatDarkLaf"/>
   <Figure DoubleBuffering="true"/>
-  <Startup MainFormLocation="-7,-7" MainFormSize="1293,693"/>
+  <Startup MainFormLocation="-7,0" MainFormSize="1421,870"/>
 </MeteoInfo>
diff --git a/meteoinfo-lab/pom.xml b/meteoinfo-lab/pom.xml
index 71a257f2..5068364a 100644
--- a/meteoinfo-lab/pom.xml
+++ b/meteoinfo-lab/pom.xml
@@ -4,7 +4,7 @@
     <parent>
         <groupId>org.meteothink</groupId>
         <artifactId>MeteoInfo</artifactId>
-        <version>3.1.7</version>
+        <version>3.2.0</version>
     </parent>
     <artifactId>meteoinfo-lab</artifactId>
     <packaging>jar</packaging>
diff --git a/meteoinfo-lab/pylib/mipylib/dataset/dimdatafile$py.class b/meteoinfo-lab/pylib/mipylib/dataset/dimdatafile$py.class
index b3a5c171..7f4cd7cb 100644
Binary files a/meteoinfo-lab/pylib/mipylib/dataset/dimdatafile$py.class and b/meteoinfo-lab/pylib/mipylib/dataset/dimdatafile$py.class differ
diff --git a/meteoinfo-lab/pylib/mipylib/dataset/dimdatafile.py b/meteoinfo-lab/pylib/mipylib/dataset/dimdatafile.py
index 497130c0..136decd6 100644
--- a/meteoinfo-lab/pylib/mipylib/dataset/dimdatafile.py
+++ b/meteoinfo-lab/pylib/mipylib/dataset/dimdatafile.py
@@ -440,7 +440,7 @@ class DimDataFile(object):
                 var.addattr('name', v.name)
             else:
                 for attr in v.attributes:
-                    var.addattr(attr.getName(), attr.getStringValue())
+                    var.addattr(attr.getName(), attr.getValue())
 
         #Create netCDF file
         self.ncfile.create()
diff --git a/meteoinfo-lab/pylib/mipylib/dataset/dimvariable$py.class b/meteoinfo-lab/pylib/mipylib/dataset/dimvariable$py.class
index 88437317..2d8865c7 100644
Binary files a/meteoinfo-lab/pylib/mipylib/dataset/dimvariable$py.class and b/meteoinfo-lab/pylib/mipylib/dataset/dimvariable$py.class differ
diff --git a/meteoinfo-lab/pylib/mipylib/dataset/dimvariable.py b/meteoinfo-lab/pylib/mipylib/dataset/dimvariable.py
index b71e3a65..6dffd5c1 100644
--- a/meteoinfo-lab/pylib/mipylib/dataset/dimvariable.py
+++ b/meteoinfo-lab/pylib/mipylib/dataset/dimvariable.py
@@ -447,12 +447,19 @@ class DimVariable(object):
     def addattr(self, attrname, attrvalue):
         if self.attributes is None:
             self.attributes = []
+
         if isinstance(attrvalue, Array):
             attrvalue = np.NDArray(attrvalue)
+
         if isinstance(attrvalue, np.NDArray):
             if attrvalue.size == 1:
                 attrvalue = attrvalue[0]
-        attr = Attribute(attrname, attrvalue)
+                attr = Attribute(attrname, attrvalue)
+            else:
+                attr = Attribute(attrname, attrvalue._array)
+        else:
+            attr = Attribute(attrname, attrvalue)
+
         self.attributes.append(attr)
 
         if not self.ncvariable is None:
diff --git a/meteoinfo-lab/pylib/mipylib/numeric/core/_dtype$py.class b/meteoinfo-lab/pylib/mipylib/numeric/core/_dtype$py.class
index 2f583fd4..7517a126 100644
Binary files a/meteoinfo-lab/pylib/mipylib/numeric/core/_dtype$py.class and b/meteoinfo-lab/pylib/mipylib/numeric/core/_dtype$py.class differ
diff --git a/meteoinfo-lab/pylib/mipylib/numeric/core/_dtype.py b/meteoinfo-lab/pylib/mipylib/numeric/core/_dtype.py
index 657b4087..6740058f 100644
--- a/meteoinfo-lab/pylib/mipylib/numeric/core/_dtype.py
+++ b/meteoinfo-lab/pylib/mipylib/numeric/core/_dtype.py
@@ -1,7 +1,7 @@
 from org.meteoinfo.ndarray import DataType as JDataType
 
 __all__ = [
-    'byte','char','int','integer','int32','int16','short','int64','long','float','float32','float64',
+    'byte','char','int','integer','int32','int16','short','int64','uint','long','float','float32','float64',
     'double','str','string','complex','date','datetime'
     ]
 
@@ -9,6 +9,7 @@ _dtype_dict = dict(byte = JDataType.BYTE,
     char = JDataType.CHAR,
     boolean = JDataType.BOOLEAN,
     int = JDataType.INT,
+    uint = JDataType.UINT,
     short = JDataType.SHORT,
     long = JDataType.LONG,
     float = JDataType.FLOAT,
@@ -99,7 +100,7 @@ class DataType(object):
             return 'b'
         elif self.name == 'int16' or self.name == 'short':
             return 'h'
-        elif self.name == 'int' or self.name == 'integer' or self.name == 'int32':
+        elif self.name == 'int' or self.name == 'integer' or self.name == 'int32' or self.name == 'uint':
             return 'l'
         elif self.name == 'int64' or self.name == 'long':
             return 'q'
@@ -124,7 +125,7 @@ class DataType(object):
         if self.name == 'bool' or self.name == 'boolean':
             return 'b'
         elif self.name == 'int' or self.name == 'integer' or self.name == 'int32' or self.name == 'int16' or \
-            self.name == 'short' or self.name == 'int64' or self.name == 'long':
+            self.name == 'uint' or self.name == 'short' or self.name == 'int64' or self.name == 'long':
             return 'i'
         elif self.name == 'float' or self.name == 'float64' or self.name == 'double':
             return 'f'
@@ -169,6 +170,7 @@ class dtype(DataType):
     bool = DataType('boolean')
     boolean = DataType('boolean')
     int = DataType('int')
+    uint = DataType('uint')
     integer = DataType('int')
     int32 = DataType('int')
     int16 = DataType('short')
@@ -211,6 +213,7 @@ int32 = DataType('int')
 int16 = DataType('short')
 short = DataType('short')
 int64 = DataType('long')
+uint = DataType('uint')
 long = DataType('long')
 float = DataType('float')
 float32 = DataType('float')
diff --git a/meteoinfo-map/pom.xml b/meteoinfo-map/pom.xml
index fe1c6650..52046453 100644
--- a/meteoinfo-map/pom.xml
+++ b/meteoinfo-map/pom.xml
@@ -4,7 +4,7 @@
     <parent>
         <groupId>org.meteothink</groupId>
         <artifactId>MeteoInfo</artifactId>
-        <version>3.1.7</version>
+        <version>3.2.0</version>
     </parent>
     <artifactId>meteoinfo-map</artifactId>
     <packaging>jar</packaging>
diff --git a/meteoinfo-math/pom.xml b/meteoinfo-math/pom.xml
index ec9535a2..dfcc89a0 100644
--- a/meteoinfo-math/pom.xml
+++ b/meteoinfo-math/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>MeteoInfo</artifactId>
         <groupId>org.meteothink</groupId>
-        <version>3.1.7</version>
+        <version>3.2.0</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/meteoinfo-ndarray/pom.xml b/meteoinfo-ndarray/pom.xml
index 8e7c9ef7..deef5009 100644
--- a/meteoinfo-ndarray/pom.xml
+++ b/meteoinfo-ndarray/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>org.meteothink</groupId>
         <artifactId>MeteoInfo</artifactId>
-        <version>3.1.7</version>
+        <version>3.2.0</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/meteoinfo-projection/pom.xml b/meteoinfo-projection/pom.xml
index 55450105..530f395d 100644
--- a/meteoinfo-projection/pom.xml
+++ b/meteoinfo-projection/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>MeteoInfo</artifactId>
         <groupId>org.meteothink</groupId>
-        <version>3.1.7</version>
+        <version>3.2.0</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/meteoinfo-table/pom.xml b/meteoinfo-table/pom.xml
index 997b96b5..8e6de697 100644
--- a/meteoinfo-table/pom.xml
+++ b/meteoinfo-table/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>MeteoInfo</artifactId>
         <groupId>org.meteothink</groupId>
-        <version>3.1.7</version>
+        <version>3.2.0</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/meteoinfo-ui/pom.xml b/meteoinfo-ui/pom.xml
index 9baae926..b7749174 100644
--- a/meteoinfo-ui/pom.xml
+++ b/meteoinfo-ui/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>MeteoInfo</artifactId>
         <groupId>org.meteothink</groupId>
-        <version>3.1.7</version>
+        <version>3.2.0</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/pom.xml b/pom.xml
index 2ba1df41..16527d91 100644
--- a/pom.xml
+++ b/pom.xml
@@ -3,7 +3,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>org.meteothink</groupId>
     <artifactId>MeteoInfo</artifactId>
-    <version>3.1.7</version>
+    <version>3.2.0</version>
     <packaging>pom</packaging>
     
     <parent>