diff --git a/viz/ts/svg/svg.sln b/viz/ts/svg/svg.sln
index 50bd8ef..21ed58f 100644
--- a/viz/ts/svg/svg.sln
+++ b/viz/ts/svg/svg.sln
@@ -4,9 +4,14 @@ Microsoft Visual Studio Solution File, Format Version 12.00
 VisualStudioVersion = 15.0.27428.2027
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{9092AA53-FB77-4645-B42D-1CCCA6BD08BD}") = "thinkChart", "thinkChart\thinkChart.njsproj", "{F3C0F5AB-B554-4EF8-9DF0-482240FE020D}"
+	ProjectSection(ProjectDependencies) = postProject
+		{8C2DAE18-8B11-4B37-A4EC-0234D7FCCF2A} = {8C2DAE18-8B11-4B37-A4EC-0234D7FCCF2A}
+	EndProjectSection
 EndProject
 Project("{9092AA53-FB77-4645-B42D-1CCCA6BD08BD}") = "Linq.ts", "..\TsLinq\Linq.ts\Linq.ts.njsproj", "{E0AEC189-6D05-47E4-9F69-DAFE43AC8398}"
 EndProject
+Project("{9092AA53-FB77-4645-B42D-1CCCA6BD08BD}") = "svg", "svg\SVG\svg.njsproj", "{8C2DAE18-8B11-4B37-A4EC-0234D7FCCF2A}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -21,6 +26,10 @@ Global
 		{E0AEC189-6D05-47E4-9F69-DAFE43AC8398}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{E0AEC189-6D05-47E4-9F69-DAFE43AC8398}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{E0AEC189-6D05-47E4-9F69-DAFE43AC8398}.Release|Any CPU.Build.0 = Release|Any CPU
+		{8C2DAE18-8B11-4B37-A4EC-0234D7FCCF2A}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{8C2DAE18-8B11-4B37-A4EC-0234D7FCCF2A}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{8C2DAE18-8B11-4B37-A4EC-0234D7FCCF2A}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{8C2DAE18-8B11-4B37-A4EC-0234D7FCCF2A}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
diff --git a/viz/ts/svg/svg/SVG/svg.njsproj b/viz/ts/svg/svg/SVG/svg.njsproj
index 51b35c2..e763d62 100644
--- a/viz/ts/svg/svg/SVG/svg.njsproj
+++ b/viz/ts/svg/svg/SVG/svg.njsproj
@@ -7,7 +7,7 @@
     <RootNamespace>svg</RootNamespace>
     <LastActiveSolutionConfig>Debug|Any CPU</LastActiveSolutionConfig>
     <SaveNodeJsSettingsInProjectFile>True</SaveNodeJsSettingsInProjectFile>
-    <ToolsVersionPromptShown>2.9</ToolsVersionPromptShown>
+    <ToolsVersionPromptShown>2.8</ToolsVersionPromptShown>
   </PropertyGroup>
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
@@ -26,7 +26,7 @@
     <NodejsPort>1337</NodejsPort>
     <TypeScriptSourceMap>true</TypeScriptSourceMap>
     <TypeScriptModuleKind>CommonJS</TypeScriptModuleKind>
-    <TypeScriptToolsVersion>2.8</TypeScriptToolsVersion>
+    <TypeScriptToolsVersion>3.0</TypeScriptToolsVersion>
     <EnableTypeScript>true</EnableTypeScript>
     <StartWebBrowser>True</StartWebBrowser>
   </PropertyGroup>
diff --git a/viz/ts/svg/thinkChart/Math/Layout/Anchor.ts b/viz/ts/svg/thinkChart/Math/Layout/Anchor.ts
new file mode 100644
index 0000000..c41caf0
--- /dev/null
+++ b/viz/ts/svg/thinkChart/Math/Layout/Anchor.ts
@@ -0,0 +1,6 @@
+namespace Layout {
+
+    export class Anchor {
+
+    }
+}
\ No newline at end of file
diff --git a/viz/ts/svg/thinkChart/Math/Layout/Label.ts b/viz/ts/svg/thinkChart/Math/Layout/Label.ts
new file mode 100644
index 0000000..779d1e5
--- /dev/null
+++ b/viz/ts/svg/thinkChart/Math/Layout/Label.ts
@@ -0,0 +1,6 @@
+namespace Layout {
+
+    export class Label {
+
+    }
+}
\ No newline at end of file
diff --git a/viz/ts/svg/thinkChart/Math/Layout/Labeler.ts b/viz/ts/svg/thinkChart/Math/Layout/Labeler.ts
index 39ba248..bd2c869 100644
--- a/viz/ts/svg/thinkChart/Math/Layout/Labeler.ts
+++ b/viz/ts/svg/thinkChart/Math/Layout/Labeler.ts
@@ -2,8 +2,8 @@
 
     export class Labeler {
 
-        private lab = [];
-        private anc = [];
+        private lab: Label[] = [];
+        private anc: Anchor[] = [];
         private w = 1; // box width
         private h = 1; // box width
 
@@ -12,20 +12,14 @@
         private acc = 0;
         private rej = 0;
 
-        //#region "weights"
-        private w_len = 0.2; // leader line length 
-        private w_inter = 1.0; // leader line intersection
-        private w_lab2 = 30.0; // label-label overlap
-        private w_lab_anc = 30.0; // label-anchor overlap
-        private w_orient = 3.0; // orientation bias
-        //#endregion
-
         //#region ""
+        private weights: Weights;
         private energy_function: (index: number) => number;
         private schedule_function: (currT: number, initialT: number, nsweeps: number) => number;
         //#endregion
 
         public constructor(
+            weights: Weights = new Weights(),
             energy: (index: number) => number = null,
             schedule: (currT: number, initialT: number, nsweeps: number) => number = Labeler.cooling_schedule) {
 
diff --git a/viz/ts/svg/thinkChart/Math/Layout/Weights.ts b/viz/ts/svg/thinkChart/Math/Layout/Weights.ts
new file mode 100644
index 0000000..d3c641c
--- /dev/null
+++ b/viz/ts/svg/thinkChart/Math/Layout/Weights.ts
@@ -0,0 +1,27 @@
+namespace Layout {
+
+    export class Weights {
+
+        /**
+         * leader line length
+        */
+        public len: number = 0.2;
+        /**
+         * label-label overlap
+        */
+        public inter: number = 1.0;
+        /**
+         * label-label overlap
+        */
+        public lab2: number = 30.0;
+        /**
+         * label-anchor overlap
+        */
+        public lab_anc: number = 30.0;
+        /**
+         * orientation bias
+        */
+        public orient: number = 3.0;
+
+    }
+}
\ No newline at end of file
diff --git a/viz/ts/svg/thinkChart/thinkChart.njsproj b/viz/ts/svg/thinkChart/thinkChart.njsproj
index 4729ece..7b2bef0 100644
--- a/viz/ts/svg/thinkChart/thinkChart.njsproj
+++ b/viz/ts/svg/thinkChart/thinkChart.njsproj
@@ -46,6 +46,15 @@
     <TypeScriptCompile Include="Math\Geometry.ts">
       <SubType>Code</SubType>
     </TypeScriptCompile>
+    <TypeScriptCompile Include="Math\Layout\Label.ts">
+      <SubType>Code</SubType>
+    </TypeScriptCompile>
+    <TypeScriptCompile Include="Math\Layout\Anchor.ts">
+      <SubType>Code</SubType>
+    </TypeScriptCompile>
+    <TypeScriptCompile Include="Math\Layout\Weights.ts">
+      <SubType>Code</SubType>
+    </TypeScriptCompile>
   </ItemGroup>
   <ItemGroup>
     <Folder Include="Math\" />