diff --git a/README.md b/README.md
index b8fd757e..d6e9e804 100644
--- a/README.md
+++ b/README.md
@@ -6,34 +6,9 @@
 [![license](https://img.shields.io/github/license/aardvark-platform/aardvark.algodat.svg)](https://github.com/aardvark-platform/aardvark.algodat/blob/master/LICENSE)
 
 [The Aardvark Platform](https://aardvarkians.com/) |
-[Platform Wiki](https://github.com/aardvarkplatform/aardvark.docs/wiki) | 
-[Gallery](https://github.com/aardvarkplatform/aardvark.docs/wiki/Gallery) | 
-[Quickstart](https://github.com/aardvarkplatform/aardvark.docs/wiki/Quickstart-Windows) | 
-[Status](https://github.com/aardvarkplatform/aardvark.docs/wiki/Status)
+[Gallery](https://github.com/aardvark-platform/aardvark.docs/wiki/Gallery) | 
+[Packages&Repositories](https://github.com/aardvark-platform/aardvark.docs/wiki/Packages-and-Repositories)
 
-Aardvark.Algodat is part of the open-source [Aardvark platform](https://github.com/aardvark-platform/aardvark.docs/wiki) for visual computing, real-time graphics and visualization.
+Aardvark.Algodat is part of the open-source [Aardvark Platform](https://github.com/aardvark-platform) for visual computing, real-time graphics, and visualization. This repository contains high-performance, production-quality data structures and algorithms for point and mesh data, such as out-of-core point cloud management, n-closest point queries, and intersection tests. Additionally, it includes importers for file formats such as [E57 (ASTM E2807-11)](https://www.astm.org/Standards/E2807.htm), LasZip, Ply. **Aardvark.Data.Photometry** imports [IES (IESNA LM-63)](https://www.ies.org/product/standard-file-format-for-electronic-transfer-of-photometric-data/) and [LDT (EULUMDAT)](https://en.wikipedia.org/wiki/EULUMDAT) data files. **Aardvark.Phsyics.Sky** includes sky models: CIE Standard Genernal Sky, Hosek-Wilkie, Preetham; and Astronomical calcuations for position of Sun, Moon, Planets, Stars. Supported platforms are windows, linux, macOS.
 
-This repository contains high-performance, production-quality data structures and algorithms. 
-
-* **Aardvark.Geometry.BspTree** - in-memory BSP-tree
-* **Aardvark.Geometry.Clustering** - efficient clustering of geometric primitives
-* **Aardvark.Geometry.Intersection** - in-memory kd-tree for polygon meshes
-* **Aardvark.Geometry.PointSet** - out-of-core point cloud data management
-* **Aardvark.Geometry.PointTree** - fast n-closest points queries for in-memory point clouds
-* **Aardvark.Geometry.PolyMesh** - compact in-memory polygonal mesh data structure, based on [A Mesh Data Structure for Rendering and Subdivision](https://www.researchgate.net/publication/254451624_A_Mesh_Data_Structure_for_Rendering_and_Subdivision)
-
-Furthermore, there are some importers for file formats.
-
-* **Aardvark.Data.E57** - importer for [E57 (ASTM E2807-11)](https://www.astm.org/Standards/E2807.htm) laserscan files (compatible with `Aardvark.Geometry.PointSet`)
-* **Aardvark.Data.Ascii** - fast and parameterizable importer for text-based laserscan formats, like for example *.pts* (compatible with `Aardvark.Geometry.PointSet`)
-* **Aardvark.Data.Photometry** - importer of [IES (IESNA LM-63)](https://www.ies.org/product/standard-file-format-for-electronic-transfer-of-photometric-data/) and [LDT (EULUMDAT)](https://en.wikipedia.org/wiki/EULUMDAT) data files; unified data strcuture for photometric measurement data, calculations, utility functions
-
-Other:
-
-* **Aardvark.Phsyics.Sky** - sky models: CIE Standard Genernal Sky, Hosek-Wilkie, Preetham; Astronomical calcuations for position of Sun, Moon, Planets, Stars
-
-This software repository is made available under the terms of the [GNU Affero General Public License (AGPL)](LICENSE).
-
-[Point Clouds Documentation](https://github.com/aardvark-platform/aardvark.docs/wiki/Point-Clouds)
-
-[Aardvark Platform Documentation](https://github.com/aardvark-platform/aardvark.docs/wiki)
+You can find demos and code in the Gallery and Packages&Repositories links above. Supplementary documentation is in [this repository's wiki](https://github.com/aardvark-platform/aardvark.algodat/wiki). For more information, please refer to the [aardvark.docs wiki](https://github.com/aardvark-platform/aardvark.docs/wiki).
diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
index 40d1f615..292c148e 100644
--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@@ -49,6 +49,9 @@
 ### 5.3.0-prerelease001
 - structured point clouds implementation (prerelease, for testing only)
 
+### 5.2.28
+- updated base packages to 5.2.28 (LinearRegression missing method hotfix)
+
 ### 5.2.27
 - [LodTreeInstance] intersect view frustum depth range to -1 +1
 
diff --git a/paket.lock b/paket.lock
index 469c51ba..b9f0d295 100644
--- a/paket.lock
+++ b/paket.lock
@@ -2,109 +2,109 @@ STORAGE: NONE
 RESTRICTION: || (== net6.0) (== netstandard2.0)
 NUGET
   remote: https://api.nuget.org/v3/index.json
-    Aardvark.Application (5.4.1)
-      Aardvark.Base.Essentials (>= 5.2.23 < 5.3)
-      Aardvark.Base.Incremental (>= 5.2.23 < 5.3)
-      Aardvark.Rendering (5.4.1)
-      FShade.Core (>= 5.4 < 5.5)
-      FShade.GLSL (>= 5.4)
+    Aardvark.Application (5.4.8)
+      Aardvark.Base.Essentials (>= 5.2.27 < 5.3)
+      Aardvark.Base.Incremental (>= 5.2.27 < 5.3)
+      Aardvark.Rendering (5.4.8)
+      FShade.Core (>= 5.5.3 < 5.6)
+      FShade.GLSL (>= 5.5.3)
       FSharp.Core (>= 5.0.1)
-    Aardvark.Application.OpenVR (5.4.1)
-      Aardvark.Application (5.4.1)
-      Aardvark.Base.Essentials (>= 5.2.23 < 5.3)
-      Aardvark.Base.Incremental (>= 5.2.23 < 5.3)
-      Aardvark.Base.Tensors (>= 5.2.23 < 5.3)
-      Aardvark.Rendering (5.4.1)
-      Aardvark.Rendering.Text (5.4.1)
-      Aardvark.SceneGraph (5.4.1)
-      FShade.Core (>= 5.4 < 5.5)
-      FShade.GLSL (>= 5.4)
+    Aardvark.Application.OpenVR (5.4.8)
+      Aardvark.Application (5.4.8)
+      Aardvark.Base.Essentials (>= 5.2.27 < 5.3)
+      Aardvark.Base.Incremental (>= 5.2.27 < 5.3)
+      Aardvark.Base.Tensors (>= 5.2.27 < 5.3)
+      Aardvark.Rendering (5.4.8)
+      Aardvark.Rendering.Text (5.4.8)
+      Aardvark.SceneGraph (5.4.8)
+      FShade.Core (>= 5.5.3 < 5.6)
+      FShade.GLSL (>= 5.5.3)
       FSharp.Core (>= 5.0.1)
       Unofficial.OpenVR (>= 1.1 < 1.2)
-    Aardvark.Application.OpenVR.GL (5.4.1)
-      Aardvark.Application (5.4.1)
-      Aardvark.Application.OpenVR (5.4.1)
-      Aardvark.Application.Slim (5.4.1)
-      Aardvark.Application.Slim.GL (5.4.1)
-      Aardvark.Base.Essentials (>= 5.2.23 < 5.3)
-      Aardvark.Base.Incremental (>= 5.2.23 < 5.3)
-      Aardvark.Base.Runtime (>= 5.2.23 < 5.3)
-      Aardvark.Rendering (5.4.1)
-      Aardvark.Rendering.GL (5.4.1)
-      Aardvark.SceneGraph (5.4.1)
-      FShade.Core (>= 5.4 < 5.5)
-      FShade.GLSL (>= 5.4)
+    Aardvark.Application.OpenVR.GL (5.4.8)
+      Aardvark.Application (5.4.8)
+      Aardvark.Application.OpenVR (5.4.8)
+      Aardvark.Application.Slim (5.4.8)
+      Aardvark.Application.Slim.GL (5.4.8)
+      Aardvark.Base.Essentials (>= 5.2.27 < 5.3)
+      Aardvark.Base.Incremental (>= 5.2.27 < 5.3)
+      Aardvark.Base.Runtime (>= 5.2.27 < 5.3)
+      Aardvark.Rendering (5.4.8)
+      Aardvark.Rendering.GL (5.4.8)
+      Aardvark.SceneGraph (5.4.8)
+      FShade.Core (>= 5.5.3 < 5.6)
+      FShade.GLSL (>= 5.5.3)
       FSharp.Core (>= 5.0.1)
       Unofficial.OpenTK (>= 3.0.21 < 3.1)
       Unofficial.OpenVR (>= 1.1 < 1.2)
-    Aardvark.Application.OpenVR.Vulkan (5.4.1)
-      Aardvark.Application (5.4.1)
-      Aardvark.Application.OpenVR (5.4.1)
-      Aardvark.Base.Essentials (>= 5.2.23 < 5.3)
-      Aardvark.Base.Incremental (>= 5.2.23 < 5.3)
-      Aardvark.Base.Runtime (>= 5.2.23 < 5.3)
-      Aardvark.Rendering (5.4.1)
-      Aardvark.Rendering.Vulkan (5.4.1)
-      Aardvark.SceneGraph (5.4.1)
-      FShade.Core (>= 5.4 < 5.5)
-      FShade.GLSL (>= 5.4)
+    Aardvark.Application.OpenVR.Vulkan (5.4.8)
+      Aardvark.Application (5.4.8)
+      Aardvark.Application.OpenVR (5.4.8)
+      Aardvark.Base.Essentials (>= 5.2.27 < 5.3)
+      Aardvark.Base.Incremental (>= 5.2.27 < 5.3)
+      Aardvark.Base.Runtime (>= 5.2.27 < 5.3)
+      Aardvark.Rendering (5.4.8)
+      Aardvark.Rendering.Vulkan (5.4.8)
+      Aardvark.SceneGraph (5.4.8)
+      FShade.Core (>= 5.5.3 < 5.6)
+      FShade.GLSL (>= 5.5.3)
       FSharp.Core (>= 5.0.1)
       Unofficial.OpenVR (>= 1.1 < 1.2)
-    Aardvark.Application.Slim (5.4.1)
-      Aardvark.Application (5.4.1)
-      Aardvark.Base.Essentials (>= 5.2.23 < 5.3)
-      Aardvark.Base.Incremental (>= 5.2.23 < 5.3)
-      Aardvark.Base.Runtime (>= 5.2.23 < 5.3)
-      Aardvark.Rendering (5.4.1)
-      FShade (>= 5.4 < 5.5)
+    Aardvark.Application.Slim (5.4.8)
+      Aardvark.Application (5.4.8)
+      Aardvark.Base.Essentials (>= 5.2.27 < 5.3)
+      Aardvark.Base.Incremental (>= 5.2.27 < 5.3)
+      Aardvark.Base.Runtime (>= 5.2.27 < 5.3)
+      Aardvark.Rendering (5.4.8)
+      FShade (>= 5.5.3 < 5.6)
       FSharp.Core (>= 5.0.1)
       Silk.NET.GLFW (2.15)
       Unofficial.OpenTK (>= 3.0.21 < 3.1)
-    Aardvark.Application.Slim.GL (5.4.1)
-      Aardvark.Application (5.4.1)
-      Aardvark.Application.Slim (5.4.1)
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-      Aardvark.Base.Incremental (>= 5.2.23 < 5.3)
-      Aardvark.Base.Runtime (>= 5.2.23 < 5.3)
-      Aardvark.Base.Tensors (>= 5.2.23 < 5.3)
-      Aardvark.Rendering (5.4.1)
-      Aardvark.Rendering.GL (5.4.1)
-      FShade (>= 5.4 < 5.5)
+    Aardvark.Application.Slim.GL (5.4.8)
+      Aardvark.Application (5.4.8)
+      Aardvark.Application.Slim (5.4.8)
+      Aardvark.Base.Essentials (>= 5.2.27 < 5.3)
+      Aardvark.Base.Incremental (>= 5.2.27 < 5.3)
+      Aardvark.Base.Runtime (>= 5.2.27 < 5.3)
+      Aardvark.Base.Tensors (>= 5.2.27 < 5.3)
+      Aardvark.Rendering (5.4.8)
+      Aardvark.Rendering.GL (5.4.8)
+      FShade (>= 5.5.3 < 5.6)
       FSharp.Core (>= 5.0.1)
       Silk.NET.Core (2.15)
       Silk.NET.GLFW (2.15)
       Unofficial.OpenTK (>= 3.0.21 < 3.1)
-    Aardvark.Application.Slim.Vulkan (5.4.1)
-      Aardvark.Application (5.4.1)
-      Aardvark.Application.Slim (5.4.1)
-      Aardvark.Base.Essentials (>= 5.2.23 < 5.3)
-      Aardvark.Base.Incremental (>= 5.2.23 < 5.3)
-      Aardvark.Base.Runtime (>= 5.2.23 < 5.3)
-      Aardvark.Rendering (5.4.1)
-      Aardvark.Rendering.Vulkan (5.4.1)
-      FShade (>= 5.4 < 5.5)
+    Aardvark.Application.Slim.Vulkan (5.4.8)
+      Aardvark.Application (5.4.8)
+      Aardvark.Application.Slim (5.4.8)
+      Aardvark.Base.Essentials (>= 5.2.27 < 5.3)
+      Aardvark.Base.Incremental (>= 5.2.27 < 5.3)
+      Aardvark.Base.Runtime (>= 5.2.27 < 5.3)
+      Aardvark.Rendering (5.4.8)
+      Aardvark.Rendering.Vulkan (5.4.8)
+      FShade (>= 5.5.3 < 5.6)
       FSharp.Core (>= 5.0.1)
       GLSLangSharp (>= 0.4.14 < 0.5)
       Silk.NET.GLFW (2.15)
       Unofficial.OpenTK (>= 3.0.21 < 3.1)
-    Aardvark.Application.Utilities (5.4.1)
-      Aardvark.Application (5.4.1)
-      Aardvark.Application.OpenVR (5.4.1)
-      Aardvark.Application.OpenVR.GL (5.4.1)
-      Aardvark.Application.OpenVR.Vulkan (5.4.1)
-      Aardvark.Application.Slim (5.4.1)
-      Aardvark.Application.Slim.GL (5.4.1)
-      Aardvark.Application.Slim.Vulkan (5.4.1)
-      Aardvark.Base.Essentials (>= 5.2.23 < 5.3)
-      Aardvark.Base.Incremental (>= 5.2.23 < 5.3)
-      Aardvark.Base.Runtime (>= 5.2.23 < 5.3)
-      Aardvark.Rendering (5.4.1)
-      Aardvark.Rendering.GL (5.4.1)
-      Aardvark.Rendering.Text (5.4.1)
-      Aardvark.Rendering.Vulkan (5.4.1)
-      Aardvark.SceneGraph (5.4.1)
-      FShade.Core (>= 5.4 < 5.5)
-      FShade.GLSL (>= 5.4)
+    Aardvark.Application.Utilities (5.4.8)
+      Aardvark.Application (5.4.8)
+      Aardvark.Application.OpenVR (5.4.8)
+      Aardvark.Application.OpenVR.GL (5.4.8)
+      Aardvark.Application.OpenVR.Vulkan (5.4.8)
+      Aardvark.Application.Slim (5.4.8)
+      Aardvark.Application.Slim.GL (5.4.8)
+      Aardvark.Application.Slim.Vulkan (5.4.8)
+      Aardvark.Base.Essentials (>= 5.2.27 < 5.3)
+      Aardvark.Base.Incremental (>= 5.2.27 < 5.3)
+      Aardvark.Base.Runtime (>= 5.2.27 < 5.3)
+      Aardvark.Rendering (5.4.8)
+      Aardvark.Rendering.GL (5.4.8)
+      Aardvark.Rendering.Text (5.4.8)
+      Aardvark.Rendering.Vulkan (5.4.8)
+      Aardvark.SceneGraph (5.4.8)
+      FShade.Core (>= 5.5.3 < 5.6)
+      FShade.GLSL (>= 5.5.3)
       FSharp.Core (>= 5.0.1)
       Unofficial.OpenTK (>= 3.0.21 < 3.1)
       Unofficial.OpenVR (>= 1.1 < 1.2)
@@ -154,7 +154,7 @@ NUGET
       SixLabors.ImageSharp (>= 2.1.3 < 2.2)
     Aardvark.Base.TypeProviders (4.5.15)
       FSharp.Core (>= 4.2.3)
-    Aardvark.Build (1.0.20)
+    Aardvark.Build (1.0.21)
     Aardvark.Data.Durable (0.3.15)
     Aardvark.Data.Durable.Codec (0.3.15)
       Aardvark.Base (>= 5.2.25 < 5.3)
@@ -168,82 +168,82 @@ NUGET
       FSharp.Data.Adaptive (>= 1.2 < 1.3)
       FsPickler (>= 5.3.2 < 5.4)
       Unofficial.LibTessDotNet (>= 2.0.2 < 2.1)
-    Aardvark.Rendering (5.4.1)
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-      Aardvark.Base.Incremental (>= 5.2.23 < 5.3)
-      Aardvark.Base.Tensors (>= 5.2.23 < 5.3)
-      FShade.Core (>= 5.4 < 5.5)
-      FShade.GLSL (>= 5.4)
+    Aardvark.Rendering (5.4.8)
+      Aardvark.Base.Essentials (>= 5.2.27 < 5.3)
+      Aardvark.Base.Incremental (>= 5.2.27 < 5.3)
+      Aardvark.Base.Tensors (>= 5.2.27 < 5.3)
+      FShade.Core (>= 5.5.3 < 5.6)
+      FShade.GLSL (>= 5.5.3)
       FSharp.Core (>= 5.0.1)
       FSharp.Data.Adaptive (>= 1.2.13 < 1.3)
-    Aardvark.Rendering.GL (5.4.1)
+    Aardvark.Rendering.GL (5.4.8)
       Aardvark.Assembler (>= 0.0.8 < 0.1)
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-      Aardvark.Geometry (>= 5.2.23 < 5.3)
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       FSharp.Core (>= 5.0.1)
       GLSLangSharp (>= 0.4.14 < 0.5)
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+    Aardvark.SceneGraph (5.4.8)
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+      FShade.Core (>= 5.5.3 < 5.6)
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       FSharp.Core (>= 5.0.1)
     CommonMark.NET (0.15.1)
     Crc32.NET (1.2)
       NETStandard.Library (>= 2.0)
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-      FShade.Core (5.4)
-      FShade.GLSL (5.4)
-      FShade.Imperative (5.4)
-      FShade.SpirV (5.4)
-    FShade.Core (5.4)
+    FShade (5.5.3)
+      FShade.Core (5.5.3)
+      FShade.GLSL (5.5.3)
+      FShade.Imperative (5.5.3)
+      FShade.SpirV (5.5.3)
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       Aardvark.Base (>= 5.2.19 < 5.3)
       Aardvark.Base.FSharp (>= 5.2.19 < 5.3)
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       FSharp.Core (>= 5.0)
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       Aardvark.Base.FSharp (>= 5.2.19 < 5.3)
-      FShade.Core (5.4)
-      FShade.Imperative (5.4)
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-    FShade.Imperative (5.4)
+    FShade.Imperative (5.5.3)
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       FSharp.Core (>= 5.0)
       FsPickler (>= 5.3.2 < 5.4)
-    FShade.SpirV (5.4)
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       Aardvark.Base (>= 5.2.19 < 5.3)
       Aardvark.Base.FSharp (>= 5.2.19 < 5.3)
-      FShade.Core (5.4)
-      FShade.Imperative (5.4)
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+      FShade.Imperative (5.5.3)
       FSharp.Core (>= 5.0)
     FSharp.Core (5.0.1)
-    FSharp.Data.Adaptive (1.2.13)
+    FSharp.Data.Adaptive (1.2.14)
       FSharp.Core (>= 4.7)
       System.Reflection.Emit.Lightweight (>= 4.6)
     FsPickler (5.3.2)
@@ -251,33 +251,32 @@ NUGET
       System.Reflection.Emit.Lightweight (>= 4.3)
     GLSLangSharp (0.4.15)
       FSharp.Core (>= 5.0)
-    Microsoft.Bcl.AsyncInterfaces (6.0)
-      System.Threading.Tasks.Extensions (>= 4.5.4) - restriction: || (&& (== net6.0) (>= net461)) (&& (== net6.0) (< netstandard2.1)) (== netstandard2.0)
+    Microsoft.Bcl.AsyncInterfaces (8.0)
+      System.Threading.Tasks.Extensions (>= 4.5.4) - restriction: || (&& (== net6.0) (>= net462)) (&& (== net6.0) (< netstandard2.1)) (== netstandard2.0)
     Microsoft.Bcl.HashCode (1.1.1) - restriction: || (&& (== net6.0) (< netstandard2.1)) (== netstandard2.0)
-    Microsoft.CodeCoverage (17.6) - restriction: || (== net6.0) (&& (== netstandard2.0) (>= net45)) (&& (== netstandard2.0) (>= netcoreapp1.0))
+    Microsoft.CodeCoverage (17.8) - restriction: || (== net6.0) (&& (== netstandard2.0) (>= net45)) (&& (== netstandard2.0) (>= netcoreapp1.0))
     Microsoft.CSharp (4.7)
     Microsoft.DotNet.PlatformAbstractions (3.1.6)
-    Microsoft.Extensions.DependencyModel (6.0)
-      System.Buffers (>= 4.5.1)
-      System.Memory (>= 4.5.4)
-      System.Runtime.CompilerServices.Unsafe (>= 6.0)
-      System.Text.Encodings.Web (>= 6.0)
-      System.Text.Json (>= 6.0)
+    Microsoft.Extensions.DependencyModel (8.0)
+      System.Buffers (>= 4.5.1) - restriction: || (&& (== net6.0) (>= net462)) (== netstandard2.0)
+      System.Memory (>= 4.5.5) - restriction: || (&& (== net6.0) (>= net462)) (== netstandard2.0)
+      System.Text.Encodings.Web (>= 8.0)
+      System.Text.Json (>= 8.0)
     Microsoft.NET.Test.Sdk (17.3.3)
       Microsoft.CodeCoverage (>= 17.3.3) - restriction: || (== net6.0) (&& (== netstandard2.0) (>= net45)) (&& (== netstandard2.0) (>= netcoreapp1.0))
       Microsoft.TestPlatform.TestHost (>= 17.3.3) - restriction: || (== net6.0) (&& (== netstandard2.0) (>= netcoreapp1.0))
-    Microsoft.NETCore.Platforms (6.0.5)
+    Microsoft.NETCore.Platforms (7.0.4)
     Microsoft.NETCore.Targets (5.0)
-    Microsoft.TestPlatform.ObjectModel (17.6) - restriction: || (== net6.0) (&& (== netstandard2.0) (>= netcoreapp3.1))
-      NuGet.Frameworks (>= 5.11)
+    Microsoft.TestPlatform.ObjectModel (17.8) - restriction: || (== net6.0) (&& (== netstandard2.0) (>= netcoreapp3.1))
+      NuGet.Frameworks (>= 6.5)
       System.Reflection.Metadata (>= 1.6)
-    Microsoft.TestPlatform.TestHost (17.6) - restriction: || (== net6.0) (&& (== netstandard2.0) (>= netcoreapp1.0))
-      Microsoft.TestPlatform.ObjectModel (>= 17.6) - restriction: || (== net6.0) (&& (== netstandard2.0) (>= netcoreapp3.1))
+    Microsoft.TestPlatform.TestHost (17.8) - restriction: || (== net6.0) (&& (== netstandard2.0) (>= netcoreapp1.0))
+      Microsoft.TestPlatform.ObjectModel (>= 17.8) - restriction: || (== net6.0) (&& (== netstandard2.0) (>= netcoreapp3.1))
       Newtonsoft.Json (>= 13.0.1) - restriction: || (== net6.0) (&& (== netstandard2.0) (>= netcoreapp3.1))
     NETStandard.Library (2.0.3)
       Microsoft.NETCore.Platforms (>= 1.1)
-    Newtonsoft.Json (13.0.1) - restriction: || (== net6.0) (&& (== netstandard2.0) (>= netcoreapp3.1))
-    NuGet.Frameworks (6.3) - restriction: || (== net6.0) (&& (== netstandard2.0) (>= netcoreapp3.1))
+    Newtonsoft.Json (13.0.3) - restriction: || (== net6.0) (&& (== netstandard2.0) (>= netcoreapp3.1))
+    NuGet.Frameworks (6.8) - restriction: || (== net6.0) (&& (== netstandard2.0) (>= netcoreapp3.1))
     Nullable (1.3.1)
     NUnit (3.13.3)
       NETStandard.Library (>= 2.0)
@@ -296,19 +295,19 @@ NUGET
     Silk.NET.GLFW (2.15)
       Silk.NET.Core (>= 2.15)
       Ultz.Native.GLFW (>= 3.3.3.1)
-    SixLabors.ImageSharp (2.1.3)
+    SixLabors.ImageSharp (2.1.6)
       System.Buffers (>= 4.5.1) - restriction: || (&& (== net6.0) (>= net472)) (&& (== net6.0) (< netcoreapp2.1)) (== netstandard2.0)
       System.Memory (>= 4.5.4) - restriction: || (&& (== net6.0) (>= net472)) (&& (== net6.0) (< netcoreapp2.1)) (== netstandard2.0)
       System.Numerics.Vectors (>= 4.5) - restriction: || (&& (== net6.0) (>= net472)) (&& (== net6.0) (< netcoreapp2.1)) (== netstandard2.0)
       System.Runtime.CompilerServices.Unsafe (>= 5.0)
       System.Text.Encoding.CodePages (>= 5.0)
-    System.Buffers (4.5.1)
+    System.Buffers (4.5.1) - restriction: || (&& (== net6.0) (>= net462)) (== netstandard2.0)
     System.Collections (4.3)
       Microsoft.NETCore.Platforms (>= 1.1)
       Microsoft.NETCore.Targets (>= 1.1)
       System.Runtime (>= 4.3)
-    System.Collections.Immutable (6.0)
-      System.Memory (>= 4.5.4) - restriction: || (&& (== net6.0) (>= net461)) (== netstandard2.0)
+    System.Collections.Immutable (8.0)
+      System.Memory (>= 4.5.5) - restriction: || (&& (== net6.0) (>= net462)) (== netstandard2.0)
       System.Runtime.CompilerServices.Unsafe (>= 6.0)
     System.Diagnostics.Debug (4.3)
       Microsoft.NETCore.Platforms (>= 1.1)
@@ -390,8 +389,9 @@ NUGET
       Microsoft.NETCore.Targets (>= 1.1)
       System.Reflection (>= 4.3)
       System.Runtime (>= 4.3)
-    System.Reflection.Metadata (6.0.1)
-      System.Collections.Immutable (>= 6.0)
+    System.Reflection.Metadata (8.0)
+      System.Collections.Immutable (>= 8.0)
+      System.Memory (>= 4.5.5) - restriction: || (&& (== net6.0) (>= net462)) (== netstandard2.0)
     System.Reflection.Primitives (4.3)
       Microsoft.NETCore.Platforms (>= 1.1)
       Microsoft.NETCore.Targets (>= 1.1)
@@ -415,21 +415,20 @@ NUGET
       Microsoft.NETCore.Platforms (>= 1.1)
       Microsoft.NETCore.Targets (>= 1.1)
       System.Runtime (>= 4.3)
-    System.Text.Encoding.CodePages (6.0)
-      System.Memory (>= 4.5.4) - restriction: || (&& (== net6.0) (>= net461)) (&& (== net6.0) (< netcoreapp3.1)) (== netstandard2.0)
+    System.Text.Encoding.CodePages (8.0)
+      System.Memory (>= 4.5.5) - restriction: || (&& (== net6.0) (>= net462)) (== netstandard2.0)
       System.Runtime.CompilerServices.Unsafe (>= 6.0)
-    System.Text.Encodings.Web (6.0)
-      System.Buffers (>= 4.5.1) - restriction: || (&& (== net6.0) (>= net461)) (&& (== net6.0) (< netcoreapp3.1)) (== netstandard2.0)
-      System.Memory (>= 4.5.4) - restriction: || (&& (== net6.0) (>= net461)) (&& (== net6.0) (< netcoreapp3.1)) (== netstandard2.0)
+    System.Text.Encodings.Web (8.0)
+      System.Buffers (>= 4.5.1) - restriction: || (&& (== net6.0) (>= net462)) (== netstandard2.0)
+      System.Memory (>= 4.5.5) - restriction: || (&& (== net6.0) (>= net462)) (== netstandard2.0)
       System.Runtime.CompilerServices.Unsafe (>= 6.0)
-    System.Text.Json (6.0.9)
-      Microsoft.Bcl.AsyncInterfaces (>= 6.0) - restriction: || (&& (== net6.0) (>= net461)) (&& (== net6.0) (< netcoreapp3.1)) (== netstandard2.0)
-      System.Buffers (>= 4.5.1) - restriction: || (&& (== net6.0) (>= net461)) (&& (== net6.0) (< netcoreapp3.1)) (== netstandard2.0)
-      System.Memory (>= 4.5.4) - restriction: || (&& (== net6.0) (>= net461)) (&& (== net6.0) (< netcoreapp3.1)) (== netstandard2.0)
-      System.Numerics.Vectors (>= 4.5) - restriction: || (&& (== net6.0) (>= net461)) (&& (== net6.0) (< netcoreapp3.1)) (== netstandard2.0)
+    System.Text.Json (8.0.1)
+      Microsoft.Bcl.AsyncInterfaces (>= 8.0) - restriction: || (&& (== net6.0) (>= net462)) (== netstandard2.0)
+      System.Buffers (>= 4.5.1) - restriction: || (&& (== net6.0) (>= net462)) (== netstandard2.0)
+      System.Memory (>= 4.5.5) - restriction: || (&& (== net6.0) (>= net462)) (== netstandard2.0)
       System.Runtime.CompilerServices.Unsafe (>= 6.0)
-      System.Text.Encodings.Web (>= 6.0)
-      System.Threading.Tasks.Extensions (>= 4.5.4) - restriction: || (&& (== net6.0) (>= net461)) (&& (== net6.0) (< netcoreapp3.1)) (== netstandard2.0)
+      System.Text.Encodings.Web (>= 8.0)
+      System.Threading.Tasks.Extensions (>= 4.5.4) - restriction: || (&& (== net6.0) (>= net462)) (== netstandard2.0)
     System.Threading (4.3)
       System.Runtime (>= 4.3)
       System.Threading.Tasks (>= 4.3)
@@ -437,14 +436,14 @@ NUGET
       Microsoft.NETCore.Platforms (>= 1.1)
       Microsoft.NETCore.Targets (>= 1.1)
       System.Runtime (>= 4.3)
-    System.Threading.Tasks.Extensions (4.5.4) - restriction: || (&& (== net6.0) (>= net461)) (&& (== net6.0) (< netcoreapp3.1)) (== netstandard2.0)
+    System.Threading.Tasks.Extensions (4.5.4) - restriction: || (&& (== net6.0) (>= net462)) (== netstandard2.0)
       System.Runtime.CompilerServices.Unsafe (>= 4.5.3) - restriction: || (&& (== net6.0) (>= net461)) (&& (== net6.0) (< netcoreapp2.1)) (&& (== net6.0) (< netstandard1.0)) (&& (== net6.0) (< netstandard2.0)) (&& (== net6.0) (>= wp8)) (== netstandard2.0)
-    Ultz.Native.GLFW (3.3.3.1)
+    Ultz.Native.GLFW (3.3.9.2)
     Uncodium.Eigensystems (1.1.2)
       Aardvark.Base (>= 5.1 < 6.0)
-    Uncodium.SimpleStore (3.0.29)
-      Microsoft.Bcl.AsyncInterfaces (>= 6.0 < 7.0)
-      System.Memory (>= 4.5 < 5.0)
+    Uncodium.SimpleStore (3.0.30)
+      Microsoft.Bcl.AsyncInterfaces (>= 6.0)
+      System.Memory (>= 4.5)
     Unofficial.DotSpatial.Projections (0.0.4)
     Unofficial.LibTessDotNet (2.0.2)
     Unofficial.OpenTK (3.0.21)
diff --git a/src/Apps/Viewer/Prelude.fs b/src/Apps/Viewer/Prelude.fs
index a370b8ca..cf3a673d 100644
--- a/src/Apps/Viewer/Prelude.fs
+++ b/src/Apps/Viewer/Prelude.fs
@@ -8,7 +8,7 @@ module Prelude =
 
     /// Print usage message.
     let printUsage () =
-       printfn "usage: hum <command> <args...>"
+       printfn "usage: Viewer.exe <command> <args...>"
        printfn ""
        printfn "    info <filename>                 print point cloud file info"
        printfn ""
@@ -57,6 +57,8 @@ module Prelude =
         Pts.PtsFormat
         E57.E57Format
         Yxh.YxhFormat
+        Ply.PlyFormat
+        Laszip.LaszipFormat
         ]
 
     /// Init point cloud file formats.
diff --git a/src/Apps/Viewer/Program.fs b/src/Apps/Viewer/Program.fs
index 52c0c4ac..cae1e0f9 100644
--- a/src/Apps/Viewer/Program.fs
+++ b/src/Apps/Viewer/Program.fs
@@ -14,7 +14,7 @@ let main args =
     //view @"C:\Users\sm\Downloads\C_30DN2.LAZ.store" [File.readAllText @"C:\Users\sm\Downloads\C_30DN2.LAZ.key"] (Args.parse [||])
     //view @"C:\Users\sm\Downloads\test.store" ["128330b1-8761-4a07-b160-76bcd7e2f70a"; "ab2f6f76-7eae-47c9-82d1-ad28b816abb9"] (Args.parse [||])
     
-    let store = @"C:\bla\store\lowergetikum\data.bin"
+    let store = @"E:\e57tests\stores\inference_full.binary.ply\data.uds"
     let key = Path.combine [System.IO.Path.GetDirectoryName store;"key.txt"] |> File.readAllText
     view store [key] (Args.parse [||])
 
diff --git a/src/Apps/Viewer/Properties/launchSettings.json b/src/Apps/Viewer/Properties/launchSettings.json
index 26f4d3e9..ceef5bc7 100644
--- a/src/Apps/Viewer/Properties/launchSettings.json
+++ b/src/Apps/Viewer/Properties/launchSettings.json
@@ -2,7 +2,7 @@
   "profiles": {
     "Viewer": {
       "commandName": "Project",
-      "commandLineArgs": "view \\\\heap\\steinlechner\\rmdata\\Data\\stores\\KaunertalStore kaunertal"
+      "commandLineArgs": "info \"C:\\bla\\pts\\UAV_JBs-Haus.austriaGKeast.ply\""
     }
   }
 }
\ No newline at end of file
diff --git a/src/Apps/Viewer/Viewer.fsproj b/src/Apps/Viewer/Viewer.fsproj
index a70ec3f3..17b546c4 100644
--- a/src/Apps/Viewer/Viewer.fsproj
+++ b/src/Apps/Viewer/Viewer.fsproj
@@ -48,6 +48,7 @@
     <ProjectReference Include="..\..\Aardvark.Data.Points.Ascii\Aardvark.Data.Points.Ascii.csproj" />
     <ProjectReference Include="..\..\Aardvark.Data.Points.Base\Aardvark.Data.Points.Base.csproj" />
     <ProjectReference Include="..\..\Aardvark.Data.Points.LasZip\Aardvark.Data.Points.LasZip.csproj" />
+    <ProjectReference Include="..\..\Aardvark.Data.Points.Ply\Aardvark.Data.Points.Ply.csproj" />
     <ProjectReference Include="..\..\Aardvark.Geometry.PointSet\Aardvark.Geometry.PointSet.csproj" />
     <ProjectReference Include="..\..\Aardvark.Geometry.PointTree\Aardvark.Geometry.PointTree.csproj" />
     <ProjectReference Include="..\..\Aardvark.Rendering.PointSet\Aardvark.Rendering.PointSet.fsproj" />
diff --git a/src/Apps/Viewer/Viewer.fsproj.user b/src/Apps/Viewer/Viewer.fsproj.user
index 5df420f5..f3e27abf 100644
--- a/src/Apps/Viewer/Viewer.fsproj.user
+++ b/src/Apps/Viewer/Viewer.fsproj.user
@@ -2,5 +2,6 @@
 <Project ToolsVersion="Current" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <ShowAllFiles>false</ShowAllFiles>
+    <_LastSelectedProfileId>C:\repo\aardvark.algodat-master\src\Apps\Viewer\Properties\PublishProfiles\FolderProfile.pubxml</_LastSelectedProfileId>
   </PropertyGroup>
 </Project>
\ No newline at end of file