=== modified file 'dhis-2/dhis-web/dhis-web-mapping/src/main/webapp/dhis-web-mapping/resources/mapfish/core/GeoStat/Symbol.js'
--- dhis-2/dhis-web/dhis-web-mapping/src/main/webapp/dhis-web-mapping/resources/mapfish/core/GeoStat/Symbol.js	2011-01-07 10:58:35 +0000
+++ dhis-2/dhis-web/dhis-web-mapping/src/main/webapp/dhis-web-mapping/resources/mapfish/core/GeoStat/Symbol.js	2011-01-27 15:16:58 +0000
@@ -108,7 +108,7 @@
 				var value = feature.attributes[this.indicator];
                 var size = (value - this.minVal) / (this.maxVal - this.minVal) *
 					(this.maxSize - this.minSize) + this.minSize;
-                return size;
+                return size || this.minSize;
             },	this
 		);
 		this.extendStyle(null, {'pointRadius': '${calculateRadius}'}, {'calculateRadius': calculateRadius});

=== modified file 'dhis-2/dhis-web/dhis-web-mapping/src/main/webapp/dhis-web-mapping/resources/mapfish/widgets/geostat/Symbol.js'
--- dhis-2/dhis-web/dhis-web-mapping/src/main/webapp/dhis-web-mapping/resources/mapfish/widgets/geostat/Symbol.js	2011-01-26 00:07:38 +0000
+++ dhis-2/dhis-web/dhis-web-mapping/src/main/webapp/dhis-web-mapping/resources/mapfish/widgets/geostat/Symbol.js	2011-01-27 15:16:58 +0000
@@ -811,6 +811,9 @@
             fieldLabel: 'Low radius',
 			labelSeparator: G.conf.labelseparator,
             width: G.conf.combo_number_width_small,
+            allowDecimals: false,
+            allowNegative: false,
+            minValue: 1,
             value: 5,
             listeners: {
                 'change': {
@@ -828,6 +831,9 @@
             fieldLabel: 'High radius',
 			labelSeparator: G.conf.labelseparator,
             width: G.conf.combo_number_width_small,
+            allowDecimals: false,
+            allowNegative: false,
+            minValue: 1,
             value: 20,
             listeners: {
                 'change': {