diff --git a/app.py b/app.py
index c71e5c1..b17dc55 100644
--- a/app.py
+++ b/app.py
@@ -51,6 +51,7 @@ class renderedImageZoom:
         self.set_sun(90)
         self.fisheye = False
         self.curr_env = 0
+        self.coords = (0,0)
         self.zoom_factor = 1
         self.env_list = ["cont_clean","cont_avr","cont_poll","urban","desert","mar_clean","mar_poll","mar_tro","arctic","antarctic"]
 
@@ -188,10 +189,20 @@ class renderedImageZoom:
 
         s_frame.grid(column=0,row=9,columnspan=2,padx=20)
 
+## Altitude
+        a_frame = tkinter.Frame(self.aerosol_window)
+        text_a = tkinter.Text(a_frame,height=1,width=10)
+        submit_a_button = tkinter.Button(a_frame,text="Override altitude",command=lambda: self.set_altitute(int(text_a.get("1.0","end-1c"))))
+        self.alt_label = tkinter.Label(a_frame,text="choose location to set altitude")
+        text_a.pack(side=tkinter.LEFT)
+        self.alt_label.pack(side=tkinter.RIGHT)
+        submit_a_button.pack(side=tkinter.RIGHT)
+
+        a_frame.grid(column=0,row=10,columnspan=2,padx=20)
 
 
         testing_info_text = tkinter.Label(self.aerosol_window, text="Change y heights between which average redness and blueness will be calculated")
-        testing_info_text.grid(column=0,row=10,columnspan=2,pady=20,padx=10)
+        testing_info_text.grid(column=0,row=11,columnspan=2,pady=20,padx=10)
 
         r_frame = tkinter.Frame(self.aerosol_window)
         text_r_l = tkinter.Text(r_frame,height=1,width=10)
@@ -203,7 +214,7 @@ class renderedImageZoom:
         text_r_u.pack(side=tkinter.LEFT)
         average_r_label.pack(side=tkinter.RIGHT)
         submit_r_button.pack(side=tkinter.RIGHT)
-        r_frame.grid(column=0,row=11,columnspan=2,padx=20)
+        r_frame.grid(column=0,row=12,columnspan=2,padx=20)
 
 
         b_frame = tkinter.Frame(self.aerosol_window)
@@ -216,7 +227,7 @@ class renderedImageZoom:
         text_b_u.pack(side=tkinter.LEFT)
         average_b_label.pack(side=tkinter.RIGHT)
         submit_b_button.pack(side=tkinter.RIGHT)
-        b_frame.grid(column=0,row=12,columnspan=2,padx=20)
+        b_frame.grid(column=0,row=13,columnspan=2,padx=20)
 
         #self.img = Image.fromarray(image,mode="RGB")
         #self.tk_image = ImageTk.PhotoImage(width=256,height=256,image=self.img)
@@ -256,6 +267,9 @@ class renderedImageZoom:
             self.temperature = int(temp)
             print("temperature set at ",temp)
 
+    def set_altitute(self,alt):
+        self.alt_label.config(text=str(alt) + " m")
+        self.altitude = alt
 
     def set_sun(self,angle):
         if angle is None:
@@ -376,8 +390,8 @@ class renderedImageZoom:
         r = requests.get(URL,params)
         data = r.json()
         print(data['results'][0]['elevation'])
-        self.altitude = data['results'][0]['elevation']
-
+        self.set_altitute(data['results'][0]['elevation'])
+