diff --git a/chart/base.js b/chart/base.js
index 82030fd..bc4724c 100644
--- a/chart/base.js
+++ b/chart/base.js
@@ -5,6 +5,7 @@ var xml2js = require ("xml2js");
 var VError = require ("verror");
 var fs = require ("fs");
 var async = require ("async");
+//const util = require('util')
 var Chart = Backbone.Model.extend ({
 	/*
 		Read XML file from xlsx as object
@@ -56,6 +57,7 @@ var Chart = Backbone.Model.extend ({
 	*/
 	writeTable: function (cb) {
 		var me = this;
+		var chartName = me.chart
 		me.read ({file: "xl/worksheets/sheet2.xml"}, function (err, o) {
 			if (err) {
 				return cb (new VError (err, "writeTable"));
@@ -83,6 +85,15 @@ var Chart = Backbone.Model.extend ({
 						spans: "1:" + (me.titles.length + 1)
 					}
 				};
+				if(chartName == "scatter"){
+					var c = [{
+						$: {
+							r: "A" + (y + 2),
+							t: "n"
+						},
+						v: f
+					}];
+				}else{
 				var c = [{
 					$: {
 						r: "A" + (y + 2),
@@ -90,6 +101,7 @@ var Chart = Backbone.Model.extend ({
 					},
 					v: me.getStr (f)
 				}];
+				};
 				_.each (me.titles, function (t, x) {
 					c.push ({
 						$: {
@@ -147,21 +159,21 @@ var Chart = Backbone.Model.extend ({
 				axId.push (o.$.val);
 			});
 		};
-		_.each (["line", "radar", "area", "scatter", "pie"], function (chart) {
+		_.each (["line" , "radar" , "area" , "scatter" , "pie"], function (chart) {
 			if (!me.charts [chart]) {
 				delete o ["c:chartSpace"]["c:chart"]["c:plotArea"]["c:" + chart + "Chart"];
 			} else {
 				addId (o ["c:chartSpace"]["c:chart"]["c:plotArea"]["c:" + chart + "Chart"]);
 			};
 		});
-		if (!me.charts ["column"] && !me.charts ["bar"]) {
+		if (!me.charts ["column"] && !me.charts ["bar"] && !me.charts ["stack-bar"] && !me.charts ["percentage_stack-bar"] && !me.charts ["horizontal_stack-bar"] && !me.charts ["horizontal_percentage_stack-bar"]) {
 			delete o ["c:chartSpace"]["c:chart"]["c:plotArea"]["c:barChart"];
 		} else
-		if (me.charts ["column"] && !me.charts ["bar"]) {
+		if (me.charts ["column"] || me.charts ["stack-bar"] || me.charts ["percentage_stack-bar"] && !me.charts ["bar"] && !me.charts ["horizontal_stack-bar"] && !me.charts ["horizontal_percentage_stack-bar"]) {
 			o ["c:chartSpace"]["c:chart"]["c:plotArea"]["c:barChart"] = o ["c:chartSpace"]["c:chart"]["c:plotArea"]["c:barChart"][0];
 			addId (o ["c:chartSpace"]["c:chart"]["c:plotArea"]["c:barChart"]);
 		} else
-		if (!me.charts ["column"] && me.charts ["bar"]) {
+		if (me.charts ["bar"] || me.charts ["horizontal_stack-bar"] || me.charts ["horizontal_percentage_stack-bar"] &&  !me.charts ["column"]  ) {
 			o ["c:chartSpace"]["c:chart"]["c:plotArea"]["c:barChart"] = o ["c:chartSpace"]["c:chart"]["c:plotArea"]["c:barChart"][1];
 			addId (o ["c:chartSpace"]["c:chart"]["c:plotArea"]["c:barChart"]);
 		} else {
@@ -197,6 +209,7 @@ var Chart = Backbone.Model.extend ({
 			}
 			var ser = {};
 			_.each (me.titles, function (t, i) {
+				//console.log(me.titles);
 				var chart = me.data [t].chart || me.chart;
 				var r = {
 					"c:idx": {
@@ -284,21 +297,23 @@ var Chart = Backbone.Model.extend ({
 					};
 				};
 				ser [chart] = ser [chart] || [];
+				//console.log(ser[chart]);
 				ser [chart].push (r);
+				//console.log(util.inspect(ser, false, null, true /* enable colors */))
 			});
 /*
 			var tag = chart == "column" ? "bar" : chart;
 			o ["c:chartSpace"]["c:chart"]["c:plotArea"]["c:barChart"][0]["c:ser"] = ser;
 */
 			_.each (ser, function (ser, chart) {
-				if (chart == "column") {
+				if (chart == "column" || chart == "stack-bar" || chart == "percentage_stack-bar") {
 					if (me.tplName == "charts") {
 						o ["c:chartSpace"]["c:chart"]["c:plotArea"]["c:barChart"][0]["c:ser"] = ser;
 					} else {
 						o ["c:chartSpace"]["c:chart"]["c:plotArea"]["c:barChart"]["c:ser"] = ser;
 					};
 				} else
-				if (chart == "bar") {
+				if (chart == "bar" || chart == "horizontal_stack-bar" || chart == "horizontal_percentage_stack-bar") {
 					if (me.tplName == "charts") {
 						o ["c:chartSpace"]["c:chart"]["c:plotArea"]["c:barChart"][1]["c:ser"] = ser;
 					} else {
@@ -392,6 +407,10 @@ var Chart = Backbone.Model.extend ({
 			me.tplName = "pie";
 			return;
 		};
+		if (me.chart ==  "combo") {
+			me.tplName = "combo";
+			return;
+		};
 		if (_.keys (charts).length == 1) {
 			me.tplName = _.keys (charts) [0];
 			return;
@@ -430,7 +449,7 @@ var Chart = Backbone.Model.extend ({
 				_.each (me.titles, function (t) {
 					me.data [t] = me.data [t] || {};
 					_.each (me.fields, function (f) {
-						me.data [t][f] = me.data [t][f] || (me.deleteEmptyCells ? '' : 0); //deleteEmptyCells - don't display missing values as 0
+						me.data [t][f] = me.data [t][f] || 0;
 					});
 				});
 				me.writeTable (cb);
diff --git a/template/charts.xlsx b/template/charts.xlsx
new file mode 100644
index 0000000..57bae62
Binary files /dev/null and b/template/charts.xlsx differ
diff --git a/template/combo.xlsx b/template/combo.xlsx
new file mode 100644
index 0000000..21a0d33
Binary files /dev/null and b/template/combo.xlsx differ
diff --git a/template/horizontal_percentage_stack-bar.xlsx b/template/horizontal_percentage_stack-bar.xlsx
new file mode 100644
index 0000000..8b02fb4
Binary files /dev/null and b/template/horizontal_percentage_stack-bar.xlsx differ
diff --git a/template/horizontal_stack-bar.xlsx b/template/horizontal_stack-bar.xlsx
new file mode 100644
index 0000000..c6623a3
Binary files /dev/null and b/template/horizontal_stack-bar.xlsx differ
diff --git a/template/percentage_stack-bar.xlsx b/template/percentage_stack-bar.xlsx
new file mode 100644
index 0000000..492f3c8
Binary files /dev/null and b/template/percentage_stack-bar.xlsx differ
diff --git a/template/stack-bar.xlsx b/template/stack-bar.xlsx
new file mode 100644
index 0000000..3472282
Binary files /dev/null and b/template/stack-bar.xlsx differ