diff --git a/meteoinfo-chart/src/main/java/org/meteoinfo/chart/graphic/GeoGraphicCollection.java b/meteoinfo-chart/src/main/java/org/meteoinfo/chart/graphic/GeoGraphicCollection.java
index 91c2b328..7bc40813 100644
--- a/meteoinfo-chart/src/main/java/org/meteoinfo/chart/graphic/GeoGraphicCollection.java
+++ b/meteoinfo-chart/src/main/java/org/meteoinfo/chart/graphic/GeoGraphicCollection.java
@@ -6,16 +6,21 @@ import org.meteoinfo.common.MIMath;
 import org.meteoinfo.common.PointD;
 import org.meteoinfo.geometry.graphic.Graphic;
 import org.meteoinfo.geometry.graphic.GraphicCollection;
-import org.meteoinfo.geometry.legend.ColorBreak;
-import org.meteoinfo.geometry.legend.LabelBreak;
-import org.meteoinfo.geometry.legend.LegendType;
+import org.meteoinfo.geometry.legend.*;
 import org.meteoinfo.geometry.shape.PointShape;
 import org.meteoinfo.geometry.shape.PolylineShape;
 import org.meteoinfo.geometry.shape.Shape;
+import org.meteoinfo.geometry.shape.ShapeTypes;
+import org.meteoinfo.ndarray.DataType;
 import org.meteoinfo.projection.ProjectionInfo;
 import org.meteoinfo.table.AttributeTable;
 import org.meteoinfo.table.Field;
 
+import javax.swing.*;
+import java.awt.*;
+import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
+import java.util.ArrayList;
 import java.util.List;
 
 public class GeoGraphicCollection extends GraphicCollection {
@@ -181,4 +186,124 @@ public class GeoGraphicCollection extends GraphicCollection {
         }
     }
 
+    /**
+     * Create legend scheme
+     *
+     * @param aLT Legend type
+     * @param fieldName Field name
+     * @return Legend scheme
+     */
+    public LegendScheme createLegendScheme(LegendType aLT, String fieldName) {
+        double min, max;
+        ShapeTypes aST = this.getShapeType();
+        LegendScheme aLS = new LegendScheme(this.getShapeType());
+
+        min = aLS.getMinValue();
+        max = aLS.getMaxValue();
+        switch (aLT) {
+            case SINGLE_SYMBOL:
+                Color aColor = Color.black;
+                float size = 1.0F;
+                switch (aST) {
+                    case POINT:
+                    case POINT_M:
+                    case POINT_Z:
+                        aColor = Color.black;
+                        size = 5;
+                        break;
+                    case POLYLINE:
+                    case POLYLINE_M:
+                    case POLYLINE_Z:
+                        aColor = Color.black;
+                        break;
+                    case POLYGON:
+                    case POLYGON_M:
+                    case POLYGON_Z:
+                    case IMAGE:
+                        aColor = new Color(255, 251, 195);
+                        break;
+                }
+
+                aLS = LegendManage.createSingleSymbolLegendScheme(aST, aColor, size);
+                break;
+            case UNIQUE_VALUE:
+                Color[] colors;
+                List<String> valueList = new ArrayList<>();
+                boolean isDateField = false;
+                DataType colType = this.getAttributeTable().getTable().getColumns().get(fieldName).getDataType();
+                if (colType == DataType.DATE) {
+                    isDateField = true;
+                }
+
+                List<String> captions = new ArrayList<>();
+                DateTimeFormatter format = DateTimeFormatter.ofPattern("yyyy/M/d");
+
+                for (int i = 0; i < this.getAttributeTable().getTable().getRows().size(); i++) {
+                    Object value = this.getAttributeTable().getTable().getRows().get(i).getValue(fieldName);
+                    if (!valueList.contains(value.toString())) {
+                        valueList.add(value.toString());
+                        if (isDateField) {
+                            captions.add(format.format((LocalDateTime) value));
+                        }
+                    }
+                }
+
+                if (valueList.size() <= 13) {
+                    colors = LegendManage.createRainBowColors(valueList.size());
+                } else {
+                    colors = LegendManage.createRandomColors(valueList.size());
+                }
+                Color[] newcolors = new Color[colors.length + 1];
+                newcolors[0] = Color.white;
+                for (int i = 1; i < newcolors.length; i++) {
+                    newcolors[i] = colors[i - 1];
+                }
+
+                if (isDateField) {
+                    aLS = LegendManage.createUniqValueLegendScheme(valueList, captions, newcolors, aST, min,
+                            max, aLS.getHasNoData(), aLS.getUndefValue());
+                } else {
+                    aLS = LegendManage.createUniqValueLegendScheme(valueList, newcolors,
+                            aST, min, max, aLS.getHasNoData(), aLS.getUndefValue());
+                }
+
+                aLS.setFieldName(fieldName);
+                break;
+            case GRADUATED_COLOR:
+                double[] S = new double[this.getAttributeTable().getTable().getRows().size()];
+                for (int i = 0; i < S.length; i++) {
+                    S[i] = Double.parseDouble(this.getAttributeTable().getTable().getRows().get(i).getValue(fieldName).toString());
+                }
+                double[] minmax = MIMath.getMinMaxValue(S, aLS.getUndefValue());
+                min = minmax[0];
+                max = minmax[1];
+
+                if (min == max) {
+                    JOptionPane.showMessageDialog(null, "The values of all shapes are same!");
+                    break;
+                }
+
+                double[] CValues;
+                CValues = MIMath.getIntervalValues(min, max);
+                colors = LegendManage.createRainBowColors(CValues.length + 1);
+
+                aLS = LegendManage.createGraduatedLegendScheme(CValues, colors,
+                        aST, min, max, aLS.getHasNoData(), aLS.getUndefValue());
+                aLS.setFieldName(fieldName);
+                break;
+        }
+
+        return aLS;
+    }
+
+    /**
+     * Update legend scheme
+     *
+     * @param aLT Legend type
+     * @param fieldName Field name
+     */
+    public void updateLegendScheme(LegendType aLT, String fieldName) {
+        this.setLegendScheme(createLegendScheme(aLT, fieldName));
+    }
+
 }
diff --git a/meteoinfo-chart/src/main/java/org/meteoinfo/chart/graphic/GraphicFactory.java b/meteoinfo-chart/src/main/java/org/meteoinfo/chart/graphic/GraphicFactory.java
index e6b28fdf..1e83a3f3 100644
--- a/meteoinfo-chart/src/main/java/org/meteoinfo/chart/graphic/GraphicFactory.java
+++ b/meteoinfo-chart/src/main/java/org/meteoinfo/chart/graphic/GraphicFactory.java
@@ -3447,6 +3447,10 @@ public class GraphicFactory {
      * @return Image graphic
      */
     public static Graphic createImage(Array data, Array xa, Array ya, LegendScheme ls, List<Number> extent) {
+        data = data.copyIfView();
+        xa = xa.copyIfView();
+        ya = ya.copyIfView();
+
         int width, height, breakNum;
         width = (int) xa.getSize();
         height = (int) ya.getSize();
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 181590fd..9951cd38 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
@@ -67,7 +67,7 @@ import java.util.zip.ZipInputStream;
      public static String getVersion(){
          String version = GlobalUtil.class.getPackage().getImplementationVersion();
          if (version == null || version.equals("")) {
-             version = "3.8";
+             version = "3.8.1";
          }
          return version;
      }
diff --git a/meteoinfo-lab/milconfig.xml b/meteoinfo-lab/milconfig.xml
index 8e69cd5a..99c243de 100644
--- a/meteoinfo-lab/milconfig.xml
+++ b/meteoinfo-lab/milconfig.xml
@@ -1,7 +1,6 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <MeteoInfo File="milconfig.xml" Type="configurefile">
-  <Path OpenPath="D:\Working\MIScript\Jython\mis\plot_types\funny">
-    <RecentFolder Folder="D:\Working\MIScript\Jython\mis\plot_types\3d"/>
+  <Path OpenPath="D:\Working\MIScript\Jython\mis\traj">
     <RecentFolder Folder="D:\Working\MIScript\Jython\mis\plot_types\3d\3d_earth"/>
     <RecentFolder Folder="D:\Working\MIScript\Jython\mis\io\json"/>
     <RecentFolder Folder="D:\Working\MIScript\Jython\mis\io"/>
@@ -9,22 +8,27 @@
     <RecentFolder Folder="D:\Working\MIScript\Jython\mis\plot_types\3d\jogl\imshow"/>
     <RecentFolder Folder="D:\Working\MIScript\Jython\mis\plot_types\3d\jogl"/>
     <RecentFolder Folder="D:\Working\MIScript\Jython\mis\satellite\FY"/>
-    <RecentFolder Folder="D:\Working\MIScript\Jython\mis"/>
     <RecentFolder Folder="D:\Working\MIScript\Jython\mis\meteo"/>
     <RecentFolder Folder="D:\Working\MIScript\Jython\mis\meteo\calc"/>
-    <RecentFolder Folder="D:\Working\MIScript\Jython\mis\test"/>
     <RecentFolder Folder="D:\Working\MIScript\Jython\mis\plot_types"/>
     <RecentFolder Folder="D:\Working\MIScript\Jython\mis\plot_types\contour"/>
     <RecentFolder Folder="D:\Working\MIScript\Jython\mis\plot_types\funny"/>
+    <RecentFolder Folder="D:\Working\MIScript\Jython\mis\test"/>
+    <RecentFolder Folder="D:\Working\MIScript\Jython\mis"/>
+    <RecentFolder Folder="D:\Working\MIScript\Jython\mis\traj"/>
   </Path>
   <File>
     <OpenedFiles>
       <OpenedFile File="D:\Working\MIScript\Jython\mis\plot_types\funny\flower_1.py"/>
       <OpenedFile File="D:\Working\MIScript\Jython\mis\meteo\calc\frontogenesis.py"/>
+      <OpenedFile File="D:\Working\MIScript\Jython\mis\traj\hy_part_1.py"/>
+      <OpenedFile File="D:\Working\MIScript\Jython\mis\traj\plot_basic.py"/>
     </OpenedFiles>
     <RecentFiles>
       <RecentFile File="D:\Working\MIScript\Jython\mis\plot_types\funny\flower_1.py"/>
       <RecentFile File="D:\Working\MIScript\Jython\mis\meteo\calc\frontogenesis.py"/>
+      <RecentFile File="D:\Working\MIScript\Jython\mis\traj\hy_part_1.py"/>
+      <RecentFile File="D:\Working\MIScript\Jython\mis\traj\plot_basic.py"/>
     </RecentFiles>
   </File>
   <Font>
diff --git a/meteoinfo-lab/pylib/mipylib/dataset/midata$py.class b/meteoinfo-lab/pylib/mipylib/dataset/midata$py.class
index 71f44286..d44f1134 100644
Binary files a/meteoinfo-lab/pylib/mipylib/dataset/midata$py.class and b/meteoinfo-lab/pylib/mipylib/dataset/midata$py.class differ
diff --git a/meteoinfo-lab/pylib/mipylib/dataset/midata.py b/meteoinfo-lab/pylib/mipylib/dataset/midata.py
index c6621f27..fd5263ec 100644
--- a/meteoinfo-lab/pylib/mipylib/dataset/midata.py
+++ b/meteoinfo-lab/pylib/mipylib/dataset/midata.py
@@ -586,7 +586,7 @@ def binread(fn, dim, datatype=None, skip=0, byteorder='little_endian'):
     :param dim: (*list*) Dimensions.
     :param datatype: (*string*) Data type string [byte | short | int | float | double].
     :param skip: (*int*) Skip bytes number.
-    :param byteorder: (*string*) Byte order. ``little_endian`` or ``big_endian``.
+    :param byteorder: (*string*) Byte order. `little_endian` or `big_endian`. Default is `little_endian`.
     
     :returns: (*NDArray*) Data array
     """
@@ -614,10 +614,10 @@ def binwrite(out, data, byteorder='little_endian', append=False, sequential=Fals
     
     :param out: (*string or EndianDataOutputStream*) File path or data output stream.
     :param data: (*array_like*) A numeric array variable of any dimensionality.
-    :param byteorder: (*string*) Byte order. ``little_endian`` or ``big_endian``.
-    :param append: (*boolean*) Append to an existing file or not. Only valid when ``out``
+    :param byteorder: (*string*) Byte order. `little_endian` or `big_endian`. Default is `little_endian`.
+    :param append: (*boolean*) Append to an existing file or not. Only valid when `out`
         is file path.
-    :param sequential: (*boolean*) If write binary data as sequential - Fortran
+    :param sequential: (*boolean*) If write binary data as sequential - Fortran. Default is `False`.
     """
     if isinstance(out, basestring):
         ArrayUtil.saveBinFile(out, data.asarray(), byteorder, append, sequential)
diff --git a/meteoinfo-lab/pylib/mipylib/geolib/_graphic.py b/meteoinfo-lab/pylib/mipylib/geolib/_graphic.py
index ba6fb394..f46c3644 100644
--- a/meteoinfo-lab/pylib/mipylib/geolib/_graphic.py
+++ b/meteoinfo-lab/pylib/mipylib/geolib/_graphic.py
@@ -81,3 +81,21 @@ class GeoGraphicCollection(object):
         :param y: (*float*) Y shift for moving in pixel unit.
         """
         self._geographic.moveLabel(label, x, y)
+
+    def update_legend(self, ltype, fieldname):
+        """
+        Update legend scheme.
+
+        :param ltype: (*string*) Legend type [single | unique | graduate].
+        :param fieldname: (*string*) Field name.
+        """
+        if ltype == 'single':
+            ltype = LegendType.SINGLE_SYMBOL
+        elif ltype == 'unique':
+            ltype = LegendType.UNIQUE_VALUE
+        elif ltyp == 'graduate':
+            ltype = LegendType.GRADUATED_COLOR
+        else:
+            raise ValueError(ltype)
+        self._geographic.updateLegendScheme(ltype, fieldname)
+        return self._geographic.getLegendScheme()
diff --git a/meteoinfo-render2d/pom.xml b/meteoinfo-render2d/pom.xml
index 59ceb03b..8b6a54da 100644
--- a/meteoinfo-render2d/pom.xml
+++ b/meteoinfo-render2d/pom.xml
@@ -40,4 +40,27 @@
         </dependency>
     </dependencies>
 
+    <build>
+        <plugins>
+            <plugin>
+                <inherited>true</inherited>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-javadoc-plugin</artifactId>
+                <version>3.3.1</version>
+                <executions>
+                    <execution>
+                        <id>attach-javadocs</id>
+                        <goals>
+                            <goal>jar</goal>
+                        </goals>
+                        <configuration>
+                            <failOnError>false</failOnError>
+                            <failOnWarnings>false</failOnWarnings>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+
 </project>
\ No newline at end of file
diff --git a/pom.xml b/pom.xml
index e886e760..a1923389 100644
--- a/pom.xml
+++ b/pom.xml
@@ -35,7 +35,7 @@
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <java.version>1.8</java.version>
-        <revision>3.8</revision>
+        <revision>3.8.1</revision>
         <maven.compiler.source>8</maven.compiler.source>
         <maven.compiler.target>8</maven.compiler.target>
         <maven.compiler.release>8</maven.compiler.release>