diff --git a/Project.toml b/Project.toml
index 5407d17..8605a06 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "AdriaArrayGeometryPicker"
 uuid = "10cbbe04-4d51-483e-8de5-7c05df3150f1"
-authors = ["Marcel Thielmann"]
 version = "1.0.0-DEV"
+authors = ["Marcel Thielmann"]
 
 [deps]
 Dates = "ade2ca70-3891-5945-98fb-dc099432e06a"
@@ -9,8 +9,12 @@ DelimitedFiles = "8bb1440f-4735-579b-a4ab-409b98df4dab"
 FileIO = "5789e2e9-d7fb-5bc7-8068-2c6fae9b9549"
 GLMakie = "e9467ef8-e4e7-5192-8a1a-b1aee30e663a"
 GeophysicalModelGenerator = "3700c31b-fa53-48a6-808a-ef22d5a84742"
+GridLayoutBase = "3955a311-db13-416c-9275-1d80ed98e5e9"
+Interpolations = "a98d9a8b-a2ab-59e6-89dd-64a1c18fca59"
 JLD2 = "033835bb-8acc-5ee8-8aae-3f567f8a3819"
+Makie = "ee78f7c6-11fb-53f2-987a-cfe4a2b5a57a"
 NativeFileDialog = "e1fe445b-aa65-4df4-81c1-2041507f0fd4"
+Revise = "295af30f-e4ad-537b-8983-00126c2a3abe"
 
 [compat]
 Dates = "1.10.0 - 1.11.0"
@@ -19,7 +23,10 @@ FileIO = "1.17.0"
 GLMakie = "0.8 - 0.11, 0.13"
 GeophysicalModelGenerator = "0.7.14"
 JLD2 = "0.5.15, 0.6"
+GridLayoutBase = "0.11.2"
+Interpolations = "0.15.2"
 NativeFileDialog = "0.2.1"
+Revise = "3.12.3"
 julia = "1.9"
 
 [extras]
diff --git a/src/AdA_VizPickTool_V1.jl b/src/AdA_VizPickTool_V1.jl
index aa6d29d..8d5cc04 100644
--- a/src/AdA_VizPickTool_V1.jl
+++ b/src/AdA_VizPickTool_V1.jl
@@ -10,6 +10,9 @@ include("utils.jl") # this file contains some utility functions
 include("FileIO/fileIO_utils.jl") # this file contains the functions to load and save data
 include("Controls/layout_main_controls.jl") # this file contains the layour for the main controls
 
+using Interpolations
+
+
 ###############################################################
 # main function to start the tool
 
@@ -131,21 +134,17 @@ function start_AdA_Picker(;data=nothing)
                 
                 ############################################################
                 # SET THE CONTROL PANEL
+
+                # FIELD DATA: THIS PANEL MORE OR LESS REMAINS THE SAME, ONLY SOME OF THE CONTENTS CHANGE
                 
-                # VOLUME DATA CONTROLS
+                # set up the panel, box and label
                 field_data_panel = panel_plot_controls[1, 1] = GridLayout(tellheight = false, halign = :left)
                 field_data_box   = Box(field_data_panel[1, 1:5], color = :steelblue1,strokecolor = :steelblue1, cornerradius = 3);
-                    Label(field_data_panel[1, 1:5], "Field data (Tomographies etc.)", fontsize = 16,halign = :left,width = nothing)
+                Label(field_data_panel[1, 1:5], "Field data (Tomographies etc.)", fontsize = 16,halign = :left,width = nothing)
                 
-                menu_field_data = Menu(field_data_panel[2,1:5])
-                menu_field_data.options = field_names[1:end-2] # the last one is empty, so we remove it
-
                 Label(field_data_panel[3, 1], "Colormap", fontsize = 14,halign = :left,width=nothing)
                 menu_field_colormap  = Menu(field_data_panel[3,2:5], options = [:seismic,:roma,:glasgow,:lipari,:vik,:managua,:lajolla,:inferno,:plasma,:magma,:RdBu,:RdYlBu], fontsize = 12)
-                
-                #Label(field_data_panel[4, 1], "Clim", fontsize = 12,halign = :left,width=nothing)
                 colorrange_slider = IntervalSlider(field_data_panel[4,2:4],linewidth = 20,range = colrange) 
-                
                 # text for the label of the colorbar
                 colrange_text = lift(colorrange_slider.interval) do int
                     string(round.(int,digits = 2))
@@ -160,6 +159,10 @@ function start_AdA_Picker(;data=nothing)
                 
                 rowgap!(field_data_panel,2)
 
+                # set the menu for field data selection
+                menu_field_data = Menu(field_data_panel[2,1:5])
+                menu_field_data.options = field_names[1:end-2] # the last one is empty, so we remove it
+
                 # SURFACE DATA CONTROLS
                 surf_data_panel = panel_plot_controls[2, 1] = GridLayout(tellheight = false, halign = :left,tellwidth = false)
                 surf_data_box   = Box(surf_data_panel[1, 1:5], color = :steelblue1,strokecolor = :steelblue1, cornerradius = 3);
@@ -421,8 +424,8 @@ function start_AdA_Picker(;data=nothing)
                         println("Picks loaded")                        
 
                         # add these picks as a dashed line
-                        #lines!(ax1, x_pick,y_pick, color = :white,linewidth = 3,visible = @lift($(surf_toggles[isurf].active) ? true : false)) # white background line
-                        pp = lines!(ax1, x_pick,y_pick,color=:black,linewidth=3,linestyle=:dash,visible = @lift($(compare_toggle.active) ? true : false)) # black main line
+                        lines!(ax1, x_pick,y_pick, color = :white,linewidth = 3,visible = @lift($(compare_toggle.active) ? true : false)) # white background line
+                        pp = lines!(ax1, x_pick,y_pick,color=:red,linewidth=2,linestyle=(:dot,:dense),visible = @lift($(compare_toggle.active) ? true : false)) # black main line
                         #push!(comppick_plot,pp)
                         #push!(comppick_label,data_picks["user_name"])
                         
@@ -465,14 +468,35 @@ function start_AdA_Picker(;data=nothing)
                 filetype = split(fn_save,".")[end] # get the ending
                 # save depending on file ending
                 if filetype == "jld2"
-                    # file should contain: profile information, picker information, picks
-                    profile_info = (start_lonlat = data.start_lonlat,end_lonlat = data.end_lonlat)
+                    # file should contain: profile information, picker information, picks, lat and lon of the picked points
+                    profile_info = (start_lonlat = data.start_lonlat,end_lonlat = data.end_lonlat) # profile information
+                    println("profile information generated")
+                    # interpolate the lat and lon from the profile end points to the picked points
+                    xtmp = [minimum(data.VolData.fields.x_profile), maximum(data.VolData.fields.x_profile)]
+                    println("xtmp generated")
+                    lontmp = [data.start_lonlat[1], data.end_lonlat[1]]
+                    println("lontmp generated")
+                    lattmp = [data.start_lonlat[2], data.end_lonlat[2]]  
+                    println("lattmp generated")
+
+                    interp_linear_lon = linear_interpolation(xtmp, lontmp)
+                    interp_linear_lat = linear_interpolation(xtmp, lattmp)
+                    println("interpolators generated")
+                    lon_pick = interp_linear_lon(pickarray[:,1])
+                    lat_pick = interp_linear_lat(pickarray[:,1])
+                    println("lon and lat generated")
+
+                    # add lon and lat to the pickarray
+                    pickarray = hcat(pickarray,lon_pick,lat_pick)
+                    println("lon and lat added to pickarray")
+
+                    # save as jld2 file
                     jldsave(fn_save; picks=pickarray, profile_info=profile_info, user_name=pick_name.stored_string[], date=now())
                     println(fn_save*" saved")
                 elseif filetype == "csv"    
                     println("Saving as csv is not implemented yet")
                 else
-                    println("This is not a valid pick file format. Picks are saved as jld2 file.")
+                    println("This is not a valid pick file format. Picks should be saved as jld2 files.")
                 end 
             end
             # get the file ending
diff --git a/src/test_playground.jl b/src/test_playground.jl
new file mode 100644
index 0000000..2869903
--- /dev/null
+++ b/src/test_playground.jl
@@ -0,0 +1,56 @@
+
+using GLMakie
+
+# function to clear a GridLayout unit (I call it panel) by recursively deleting all its children
+function clear_panel!(panel::GridLayout)
+    for child in panel.children
+        if child isa GridLayout
+            clear_panel!(child)
+        end
+        delete!(panel, child)
+    end
+    return nothing
+end
+
+function CreateFigure()
+# create figure
+fig = Figure(backgroundcolor = RGBf(0.98, 0.98, 0.98),size = (1000, 600))
+# create panels
+panel_clear    = fig[1,1] = GridLayout(tellheight = false)
+panel_main_menu     = fig[2,1] = GridLayout(tellheight = false)
+panel_plots         = fig[2,2:3] = GridLayout(tellheight = false)
+
+# create subpanels in main menu
+panel1 = panel_main_menu[1,1] = GridLayout(tellheight = false)  # for logo
+panel2 = panel_main_menu[2,1] = GridLayout(tellheight = false)  # for toggles
+
+# add text to panel1
+ Label(panel1[1, 1], "Field data (Tomographies etc.)", fontsize = 16,halign = :left,width = nothing)
+# add toggles to panel2
+ toggle1 = Toggle(panel2[1,1],active=false,buttoncolor = RGBf(0.9, 0.9, 0.9), framecolor_inactive = RGBf(0.5, 0.1, 0.1), framecolor_active = RGBf(0.1, 0.5, 0.1))
+ toggle2 = Toggle(panel2[1,2],active=false,buttoncolor = RGBf(0.9, 0.9, 0.9), framecolor_inactive = RGBf(0.5, 0.1, 0.1), framecolor_active = RGBf(0.1, 0.5, 0.1))
+
+# add a button to clear panel_plots
+ btn_clear = Button(panel_clear[1,1], label = "Clear Plots", width = 100)
+ #on(btn_clear.clicks) do _
+ #   clear_panel!(panel_plots)
+ #end
+
+ # add a button to clear panel_main_menu
+ btn_clear_main = Button(panel_clear[1,2], label = "Clear Main Menu", width = 150)
+ #on(btn_clear_main.clicks) do _
+ #   clear_panel!(panel_main_menu)
+ #end
+
+# create a line plot and a heatmap in panel_plots
+ax1 = Axis(panel_plots[1,1],title = "Line Plot Example")
+l = lines!(ax1, 1:10, rand(10), color = :blue)
+ax2 = Axis(panel_plots[2,1],title = "Heatmap Example")
+hm = heatmap!(ax2, rand(10,10), colormap = :viridis)
+
+return fig,ax1,ax2,hm,l
+end
+
+
+
+
diff --git a/src/utils.jl b/src/utils.jl
index bcea239..6ada73e 100644
--- a/src/utils.jl
+++ b/src/utils.jl
@@ -27,3 +27,13 @@
 #     return nothing
 # end
 
+# # function to clear a GridLayout unit (I call it panel) by recursively deleting all its children
+# function clear_panel!(panel::GridLayout)
+#     for child in panel.children
+#         if child isa GridLayout
+#             clear_panel!(child)
+#         end
+#         delete!(panel, child)
+#     end
+#     return nothing
+# end
\ No newline at end of file