diff --git a/meteoinfo-chart/src/main/java/org/meteoinfo/chart/render/jogl/VolumeRender.java b/meteoinfo-chart/src/main/java/org/meteoinfo/chart/render/jogl/VolumeRender.java
index 52d5066b..5d669b59 100644
--- a/meteoinfo-chart/src/main/java/org/meteoinfo/chart/render/jogl/VolumeRender.java
+++ b/meteoinfo-chart/src/main/java/org/meteoinfo/chart/render/jogl/VolumeRender.java
@@ -269,11 +269,11 @@ public class VolumeRender extends JOGLGraphicRender {
         program.allocateUniform(gl, "colorMap", (gl2, loc) -> {
             gl2.glUniform1i(loc, 1);
         });
-        if (this.getRayCastingType() == RayCastingType.SPECULAR) {
+        //if (this.getRayCastingType() == RayCastingType.SPECULAR) {
             program.allocateUniform(gl, "normals", (gl2, loc) -> {
                 gl2.glUniform1i(loc, 2);
             });
-        }
+       // }
         program.allocateUniform(gl, "brightness", (gl2, loc) -> {
             gl2.glUniform1f(loc, this.getBrightness());
         });
diff --git a/meteoinfo-chart/src/main/resources/shaders/volume/basic.frag b/meteoinfo-chart/src/main/resources/shaders/volume/basic.frag
index bd2f0b84..ed34b850 100644
--- a/meteoinfo-chart/src/main/resources/shaders/volume/basic.frag
+++ b/meteoinfo-chart/src/main/resources/shaders/volume/basic.frag
@@ -11,6 +11,7 @@ uniform mat4 iV;
 uniform mat4 iP;
 
 uniform sampler3D tex;
+uniform sampler3D normals;
 uniform sampler2D colorMap;
 uniform int depthSampleCount;
 uniform vec3 aabbMin;
diff --git a/meteoinfo-chart/src/main/resources/shaders/volume/maxValue.frag b/meteoinfo-chart/src/main/resources/shaders/volume/maxValue.frag
index aaa3a71a..800be894 100644
--- a/meteoinfo-chart/src/main/resources/shaders/volume/maxValue.frag
+++ b/meteoinfo-chart/src/main/resources/shaders/volume/maxValue.frag
@@ -11,6 +11,7 @@ uniform mat4 iV;
 uniform mat4 iP;
 
 uniform sampler3D tex;
+uniform sampler3D normals;
 uniform sampler2D colorMap;
 uniform int depthSampleCount;
 uniform vec3 aabbMin;
diff --git a/meteoinfo-data/src/main/java/org/meteoinfo/data/dimarray/DimArray.java b/meteoinfo-data/src/main/java/org/meteoinfo/data/dimarray/DimArray.java
index 35e7206f..f2eb26b5 100644
--- a/meteoinfo-data/src/main/java/org/meteoinfo/data/dimarray/DimArray.java
+++ b/meteoinfo-data/src/main/java/org/meteoinfo/data/dimarray/DimArray.java
@@ -267,6 +267,29 @@ public class DimArray {
         return new DimArray(rr, dims);
     }
 
+    /**
+     * Section
+     * @param ranges ranges
+     * @return Section result dim array
+     * @throws InvalidRangeException
+     */
+    public DimArray section(List<Range> ranges) throws InvalidRangeException {
+        Array r = this.array.section(ranges);
+        Array rr = Array.factory(r.getDataType(), r.getShape());
+        MAMath.copy(rr, r);
+        Section section = new Section(ranges);
+        List<Dimension> dims = new ArrayList<>();
+        for (int i = 0; i < section.getRank(); i++) {
+            Range range = section.getRange(i);
+            if (range.length() > 1) {
+                Dimension dim = this.dimensions.get(i).extract(range);
+                dims.add(dim);
+            }
+        }
+
+        return new DimArray(rr, dims);
+    }
+
     @Override
     public String toString() {
         return this.array.toString();
diff --git a/meteoinfo-lab/milconfig.xml b/meteoinfo-lab/milconfig.xml
index cb785254..3c806207 100644
--- a/meteoinfo-lab/milconfig.xml
+++ b/meteoinfo-lab/milconfig.xml
@@ -22,13 +22,11 @@
       <OpenedFile File="D:\Working\MIScript\Jython\mis\plot_types\3d\jogl\volume\volumeplot_perspective.py"/>
       <OpenedFile File="D:\Working\MIScript\Jython\mis\plot_types\3d\jogl\volume\volumeplot_perspective_2.py"/>
       <OpenedFile File="D:\Working\MIScript\Jython\mis\plot_types\3d\jogl\volume\volumeplot_perspective_1.py"/>
-      <OpenedFile File="D:\Working\MIScript\Jython\mis\plot_types\3d\jogl\volume\volumeplot_1.py"/>
     </OpenedFiles>
     <RecentFiles>
       <RecentFile File="D:\Working\MIScript\Jython\mis\plot_types\3d\jogl\volume\volumeplot_perspective.py"/>
       <RecentFile File="D:\Working\MIScript\Jython\mis\plot_types\3d\jogl\volume\volumeplot_perspective_2.py"/>
       <RecentFile File="D:\Working\MIScript\Jython\mis\plot_types\3d\jogl\volume\volumeplot_perspective_1.py"/>
-      <RecentFile File="D:\Working\MIScript\Jython\mis\plot_types\3d\jogl\volume\volumeplot_1.py"/>
     </RecentFiles>
   </File>
   <Font>