diff --git a/vtk/src/CMakeLists.txt b/vtk/src/CMakeLists.txt
index 669a5cc..f4446c2 100644
--- a/vtk/src/CMakeLists.txt
+++ b/vtk/src/CMakeLists.txt
@@ -5,22 +5,24 @@ project(VtkBase)
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
 
 find_package(VTK COMPONENTS 
+  CommonColor
   CommonColor
   CommonCore
   CommonDataModel
   FiltersGeneral
   FiltersGeometry
   FiltersProgrammable
-  IOImage
+  FiltersSources
   ImagingSources
   InteractionStyle
+  IOImage
   RenderingContextOpenGL2
   RenderingCore
+  RenderingCore
   RenderingFreeType
   RenderingGL2PSOpenGL2
-  RenderingOpenGL2
-    CommonColor
-    RenderingCore)
+  RenderingOpenGL2)
+
 
 if (NOT VTK_FOUND)
   message(FATAL_ERROR "VtkBase: Unable to find the VTK build folder.")
diff --git a/vtk/src/compile_commands.json b/vtk/src/compile_commands.json
new file mode 120000
index 0000000..25eb4b2
--- /dev/null
+++ b/vtk/src/compile_commands.json
@@ -0,0 +1 @@
+build/compile_commands.json
\ No newline at end of file
diff --git a/vtk/src/helperClasses/EGlyphLayer.cpp b/vtk/src/helperClasses/EGlyphLayer.cpp
index 9421b92..6c5050e 100644
--- a/vtk/src/helperClasses/EGlyphLayer.cpp
+++ b/vtk/src/helperClasses/EGlyphLayer.cpp
@@ -1,8 +1,106 @@
 #include "EGlyphLayer.h"
+#include <vtkRegularPolygonSource.h>
+#include <vtkGlyph2D.h>
+#include <vtkActor2D.h>
+#include <vtkNamedColors.h>
+#include <vtkPolyDataMapper2D.h>
+#include <vtkPolyDataMapper.h>
+#include <vtkProperty.h>
+#include <vtkProperty2D.h>
+#include <vtkVertexGlyphFilter.h>
+#include <netcdf>
+#include <vtkArrowSource.h>
+
+using namespace netCDF;
+using namespace std;
+
+template <typename T>
+vector<T> getVarVector(const NcVar &var) {
+    int length = 1;
+    for (NcDim dim : var.getDims()) {
+        length *= dim.getSize();
+    }
+
+    vector<T> vec(length);
+
+    var.getVar(vec.data());
+
+    return vec;
+}
+
+tuple<vector<int>, vector<double>, vector<double>> readGrid() {
+    netCDF::NcFile data("../../../../data/grid.h5", netCDF::NcFile::read);
+    multimap< string, NcVar > vars = data.getVars();
+    vector<int> time = getVarVector<int>(vars.find("times")->second);
+    vector<double> longitude = getVarVector<double>(vars.find("longitude")->second);
+    vector<double> latitude = getVarVector<double>(vars.find("latitude")->second);
+
+    return {time, latitude, longitude};
+}
+
+
 
 
 EGlyphLayer::EGlyphLayer() {
   this->ren = vtkSmartPointer<vtkRenderer>::New();
   this->ren->SetLayer(1);
   this->ren->InteractiveOff();
+
+  this->data = vtkSmartPointer<vtkPolyData>::New();
+  readCoordinates();
+}
+
+
+void EGlyphLayer::readCoordinates() {
+  vtkNew<vtkPoints> points;
+  auto [times, lats, lons] = readGrid(); // FIXME: import Robin's readData function and use it
+
+  double i = 0;
+  for (double lat : lats) {
+    for (double lon : lons) {
+      //FIXME: hard-coded values; should update with window geometry.
+      points->InsertNextPoint((lat*1000-46125)*661/16500, (lon*1000+15875)*661/28750, 0);
+    }
+  }
+  this->data->SetPoints(points);
+
+  // vtkNew<vtkArrowSource> arrowSource;
+  vtkNew<vtkRegularPolygonSource> arrowSource;
+  vtkNew<vtkGlyph2D> glyph2D;
+  glyph2D->SetSourceConnection(arrowSource->GetOutputPort());
+  glyph2D->SetInputData(this->data);
+  glyph2D->Update();
+
+  vtkNew<vtkPolyDataMapper>(mapper);
+  mapper->SetInputConnection(glyph2D->GetOutputPort());
+  mapper->Update();
+
+  vtkNew<vtkActor> actor;
+  actor->SetMapper(mapper);
+
+  vtkNew<vtkNamedColors> colors;
+  actor->GetProperty()->SetColor(colors->GetColor3d("Salmon").GetData());
+
+  this->ren->AddActor(actor);
+  
+  // vtkNew<vtkVertexGlyphFilter> glyphFilter;
+  // glyphFilter->SetInputData(this->data);
+  // glyphFilter->Update();
+  //
+  // vtkNew<vtkPolyDataMapper2D> mapper;
+  // mapper->SetInputConnection(glyphFilter->GetOutputPort());
+  // mapper->Update();
+  //
+  // vtkNew<vtkNamedColors> colors;
+  // vtkNew<vtkActor2D> actor;
+  // actor->SetMapper(mapper);
+  // actor->GetProperty()->SetColor(colors->GetColor3d("Gold").GetData());
+  // actor->GetProperty()->SetPointSize(3);
+  //
+  // this->ren->AddActor(actor);
+}
+
+
+void EGlyphLayer::updateData(short t) {
+
 }
diff --git a/vtk/src/helperClasses/EGlyphLayer.h b/vtk/src/helperClasses/EGlyphLayer.h
index 18f96ab..e401d07 100644
--- a/vtk/src/helperClasses/EGlyphLayer.h
+++ b/vtk/src/helperClasses/EGlyphLayer.h
@@ -2,12 +2,17 @@
 #define EGLYPHLAYER_H
 
 #include "Layer.h"
-
-
+#include <vtkPolyData.h>
 
 class EGlyphLayer : public Layer {
+private:
+  vtkSmartPointer<vtkPolyData> data;
+
+  void readCoordinates();
+
 public:
   EGlyphLayer();
+  void updateData(short t);
 
 };
 
diff --git a/vtk/src/helperClasses/LGlyphLayer.cpp b/vtk/src/helperClasses/LGlyphLayer.cpp
index ac5930d..9541079 100644
--- a/vtk/src/helperClasses/LGlyphLayer.cpp
+++ b/vtk/src/helperClasses/LGlyphLayer.cpp
@@ -5,3 +5,7 @@ LGlyphLayer::LGlyphLayer() {
   this->ren = vtkSmartPointer<vtkRenderer>::New();
   this->ren->SetLayer(2);
 }
+
+void LGlyphLayer::updateData(short n) {
+
+}
diff --git a/vtk/src/helperClasses/LGlyphLayer.h b/vtk/src/helperClasses/LGlyphLayer.h
index 8c61bb0..775e256 100644
--- a/vtk/src/helperClasses/LGlyphLayer.h
+++ b/vtk/src/helperClasses/LGlyphLayer.h
@@ -2,10 +2,16 @@
 #define LGLYPHLAYER_H
 
 #include "Layer.h"
+#include <vtkPolyData.h>
 
 class LGlyphLayer : public Layer {
+private:
+  vtkSmartPointer<vtkPoints> points;
+  vtkSmartPointer<vtkPolyData> data;
+
 public:
   LGlyphLayer();
+  void updateData(short t);
 
 };
 
diff --git a/vtk/src/main.cpp b/vtk/src/main.cpp
index b7a806a..bd48eb0 100644
--- a/vtk/src/main.cpp
+++ b/vtk/src/main.cpp
@@ -14,65 +14,6 @@
 #include "helperClasses/Program.h"
 
 using namespace std;
-using namespace netCDF;
-
-template <typename T>
-vector<T> getVarVector(const NcVar &var) {
-    int length = 1;
-    for (NcDim dim : var.getDims()) {
-        length *= dim.getSize();
-    }
-
-    vector<T> vec(length);
-
-    var.getVar(vec.data());
-
-    return vec;
-}
-
-tuple<vector<int>, vector<double>, vector<double>> readGrid() {
-    netCDF::NcFile data("../../../../data/grid.h5", netCDF::NcFile::read);
-    multimap< string, NcVar > vars = data.getVars();
-    vector<int> time = getVarVector<int>(vars.find("times")->second);
-    vector<double> longitude = getVarVector<double>(vars.find("longitude")->second);
-    vector<double> latitude = getVarVector<double>(vars.find("latitude")->second);
-
-    return {time, latitude, longitude};
-}
-
-
-void renderCoordinates(vtkRenderer *ren, vtkNamedColors *colors) {
-
-  vtkNew<vtkPoints> points;
-  auto [times, lats, lons] = readGrid();
-
-  double i = 0;
-  for (double lat : lats) {
-    for (double lon : lons) {
-      cout << "lat: " << (lat*1000-46125)*661/16500 << "\t lon: " << (lon*1000+15875)*661/28750 << endl;
-      points->InsertNextPoint((lat*1000-46125)*661/16500, (lon*1000+15875)*661/28750, 0);
-    }
-  }
-
-  vtkNew<vtkPolyData> polydata;
-  polydata->SetPoints(points);
-
-
-  vtkNew<vtkVertexGlyphFilter> glyphFilter;
-  glyphFilter->SetInputData(polydata);
-  glyphFilter->Update();
-
-  vtkNew<vtkPolyDataMapper2D> mapper;
-  mapper->SetInputConnection(glyphFilter->GetOutputPort());
-  mapper->Update();
-
-  vtkNew<vtkActor2D> actor;
-  actor->SetMapper(mapper);
-  actor->GetProperty()->SetColor(colors->GetColor3d("Gold").GetData());
-  actor->GetProperty()->SetPointSize(3);
-
-  ren->AddActor(actor);
-}
 
 
 int main() {
@@ -82,14 +23,6 @@ int main() {
   auto program = new Program(*bg, *e, *l);
   program->render();
 
-
-  // vtkNew<vtkNamedColors> colors;
-  // vtkNew<vtkRenderer> Euler, Background, Lagrange;
-  // Euler->SetBackground(colors->GetColor3d("DarkSlateGray").GetData());
-
-
-  // renderCoordinates(Euler, colors);
-
   return EXIT_SUCCESS;
 }
 
diff --git a/vtk/src/map_661-661.png b/vtk/src/map_661-661.png
deleted file mode 100644
index cdfd5a6..0000000
Binary files a/vtk/src/map_661-661.png and /dev/null differ