diff --git a/index.html b/index.html
index 12d815274c5b008a44486dcf22cc6296312de402..d0974a6765c3e6f5da9563948b3a14b2e95c8f2b 100644
--- a/index.html
+++ b/index.html
@@ -139,21 +139,32 @@
                         <div class="nowrap">
                           <select id="drop-down--bldg"></select>
                         </div>
-                        <br />
                       </div>
+                      <br />
                       <div id="drop-down--sensor-parent">
                         <span><strong>Sensor</strong></span>
                         <div class="nowrap">
                           <select id="drop-down--sensor"></select>
                         </div>
-                        <br />
                       </div>
+                      <br />
                       <div id="drop-down--sampling-rate-parent">
                         <span><strong>Sampling rate</strong></span>
                         <div class="nowrap">
                           <select id="drop-down--sampling-rate"></select>
                         </div>
                       </div>
+                      <br />
+                      <div id="drop-down--chart-type-parent">
+                        <span><strong>Chart type</strong></span>
+                        <div class="nowrap">
+                          <select id="drop-down--chart-type">
+                            <option>--Select--</option>
+                            <option>Line</option>
+                            <option>Heatmap</option>
+                          </select>
+                        </div>
+                      </div>
                       <!-- <span><strong>Display Options</strong></span>
                       <div class="nowrap">
                         <input id="shadows" type="checkbox" />
diff --git a/public/js/dropDownList.js b/public/js/dropDownList.js
index 17786fbb3852b1f72295981e0ecac583a96657b8..c63e6c6160358f54ca44d88d0ad5b1ba6b1306d9 100644
--- a/public/js/dropDownList.js
+++ b/public/js/dropDownList.js
@@ -270,5 +270,5 @@ const runFromOptionThree = async function () {
 };
 
 document
-  .querySelector("#drop-down--sampling-rate")
+  .querySelector("#drop-down--chart-type")
   .addEventListener("change", runFromOptionThree);