Examples

A simple Spectrum Analyzer is created. It records chunks of audio from the local computers microphone using the NAudio library. The signal is than preprocessed (windowed) and analysed eff …

This example demonstrates basic HDF5 handling in ILNumerics. A new HDF5 file is created and a dataset is added. The dataset is read back in fully and partially using hyperslabs (suba …

This example demonstrates the creation of a custom C# struct and how to store it into a HDF5 file, using ILNumerics and HDF.PInvoke. The struct serves as element type T in regular …

This example demonstrate how to sequentially write to H5Dataset. An imagesc plot is drawn, filling the whole form area. The user will drag selection rectangles on the image data. Ever …

This examples demonstrates how ILNumerics can be used with TPL without threading or memory issues.

ILNumerics arrays can be used by separate threads in parallel - as long a …

A scalable data fitter for large scattered data point clouds. Kriging interpolation is used to fit a surface to a given set of scattered (random) data points in 2D. Since too many d …

Various kriging interpolations are performed on a sample dataset from a trigonometric function.

This example accompanies the contextual documentation in the toolbox online manual:

An image (original size 750x750) is rescaled with the interp2 function from the Interpolation Toolbox and displayed by help of FastSurface. The new resolution can be adjusted by the user  …

A simple plot demonstrates how to use ILNumerics.Drawing.Plotting.SplinePlot to visualize smooth spline connected sample values. Two plots are created by using LinePlot and Spline …

A voxel dataset is loaded from a resource. It consists out of 256 slices of size 256 x 256 voxels each. The FastSurface class is utilized to quickly visualize a cutting area with arbitrary …

Explains how to use the ILNumerics Optimization Toolbox in order to find minimia of nonlinear functions, subject to constraints. The example application hosts 4 individual examples: 1D  …

Explains how to use the ILNumerics Optimization Toolbox in order to fit a nonlinear model to measurement data using least squares. Another example uses a similar approach to minimi …

Two example applications are combined in this Windows.Forms GUI: (1) fitting a line to measurement data using pinv and (2) fitting polynoms of various degrees to another measurement d …

ILNumerics Optimization Toolbox is used to solve a system of nonlinear equations F(x) = 0. The equations are wrapped into a dedicated class and assemble a cost function which returns  …

This example demonstrates several minimization examples from the family of unconstrained optimization problems. It finds the minimum of a simple quadratic function using BFGS, pic …

Two settings control the look and feel of plot cube data aspect ratio and size: AspectRatioMode and ContentFitMode. This demo applications allows you to toogle their settings individually …

The following example shall demonstrate the creation of a colormapped matrix chart. While the columns indicate weekdays, the rows represent months. A third parameter that is linke …

The following example demonstrates the creation and application of a custom colormap.

An example application demonstrates how to use and customize bar plots. A sample dataset is defined as matrix and visualized as BarPlots. Try to change the plenty of parameters by sever …

An example application demonstrates the using of ILBarPlotEx for meshgrid data visualisation. A sample dataset could be defined as vector, 2D matrix or 3D matrix in meshgrid format and  …

The example creates a number of circle objects, based on ILNumerics.Drawing.Circle. The circles are placed within a PlotCube instance and are displayed as plotting objects. Scaling and ax …

Three line plots are created. The data are generated from random numbers in a Computing Module. The lines are auto-colored and labeled with a legend. The 2D plot provides all default interacti …

Contour levels on contour plots allow detailed configuration: next to the contour level value, color, width and label text, the levels are embedded into a surface plot. Line and  …

The following example demonstrates one application of ILNumerics.Drawing.BoxPlot. BoxPlot is highly customizable. Here, it is shown how the colors of lines, fill areas and points …

This example demonstrates the utilization of Points for composing plots, similar to ImageSC. The Points are positioned along a grid. The colors are colormapped.

This example creates a simple 'Area' class which holds a border (Lines shape), a filled background (Triangles), and a label. The objects are wrapped in a class Area for easy reusing. Instan …

Three buttons allow to configure this simple line plot at runtime: switching logarithmic / linear scales for X and Y axis individually. The third button switches renderer (OpenGL / GDI) o …

Example modifying the standard Colorbar screen object for extended interaction. The data range for the colorbar is prepared to be editable with the mouse. The color data range of the attac …

The following example demonstrates the creation of a layered area plot based on arbitrary data. Furthermore, it is shown how single area plots can be adressed and further modified …

Two transparent areas are created in a line plot in order to emphasize certain regions of the plot. The area will always be transparently rendered on top of the line and markers and  …

By default ILNumerics.Drawing.Plotting.PlotCube attempts to utilize all available rendering space. It considers all axes, ticks, labels - for each axis individually. The plotcube is scaled / p …

By default ILNumerics plotcube attempts to utilize all available rendering space. It considers all axes, ticks, labels - for each axis individually. The plotcube is scaled / positioned pr …

Directional, spherical radiation measurement data is read from a CSV file and is converted to a parametric surface. Magnitude data forms the height of the sample points on a sphere and is  …

A simple surface plot is created inside a PlotCube. The user can dynamically remove and re-add the surface from the plot cube by clicking on the button. The scene updates immediately.

This example demonstrates a custom data visualization method with several advanced and semi-advanced aspects of ILNumerics Visualization Engine. At first, CSV data are read in. They conta …

In order to reverse an axis for 2D plots one can simply rotate the plot cube accordingly. Here, in order to rotate the Y axis of a line plot, the plot cube is rotated by 180° around the  …

SmoothSurface from the Visualization Extensions Toolbox [ILNumerics.Toolboxes.Drawing2] allows to visualize scattered data points very easily. The resolution of the interpolated grid and the s …

Heightmap data 20 x 20 is plotted as a flat, colormap encoded surface in its original resolution. A smoothed version of the data is computed via 2D spline interpolation, using Interpolati …

The following example demonstrates the creation of a stacked area plot based on arbitrary data. It is possible to further configure the plot, by choosing a different colormap, fil …

ILNumerics allows to combine arbitrary complex technical graphs, charts and plots. Everything is interactive and can be updated dynamically.

A simple and straight forward example creating two line plots, configured to display individual (different) markers each. The lines are annotated using a legend object. Legend items d …

In this example the use of various histogram functions in ILNumerics are demonstrated. The results are plotted in a plotting form. Bar plots are created by means of regular visualization  …

Sometimes you record sensor data from a set of sensors. The sensors may or may not be positioned on a regular grid. They might be tagged to some arbitrary 3D object. This example creates  …

This example shows how to compute and apply a zoom factor to a scene with orthographic projection in order to make the camera show the whole content of the scene.

The Triangles class is used to construct a cube from triangles. Corner positions are defined only once and connected by indices efficiently. The cube is lit and the normals are shared bet …

This example demonstrates how to assemble a scene out of individual shapes. It creates two 'pipes' from cylinder shapes and connects them with a connecting piece. Latter is realized via a  …

For complex visualizations transforms between screen and model/world coordinates are often needed. This examples creates a simple surface plot and adds 3 rectangles to it:

The example limits the axes used for rotating the scene to the X and the Z axis. The result simulates the interactive rotation behaviour of other, more simple viewers. It demonstrates the …

The standard zoom for Camera is replaced in this example by a 'directional' zoom. Instead of zooming in/out to the center of the view (LookAt point) the camera moves closer / zoomes towar …

25000 individual cubes are created. Each cube is positioned at random 3D coordinates. All cubes are rendered by a single Triangles shape. Wireframes are rendered by a single Lines shape.  …

This example implements a 'cube' class which can be used just like other scene graph objects in ILNumerics Visualization Engine. The examples uses the same instance of the 'cube' cl …

A 3D plot based on a surface is created. Custom mouse event handling performs 3D picking on the object interactively. The information obtained from the picking routine is used to mark t …

A small form allows to test the update speed of ILNumerics.Drawing.Plotting.FastSurface. Start the example in Release mode and without Debugger attached (CTRL+F5)!

By clicking o …

This example creates a huge HDF5 file with marked random values. It reads equally spaced chunks from HDF5 file and displays them in a regular plot cube. The chunk sizes used for displayin …

Tags: Visualization, mouse interaction, lighting, eventing

This example creates a very simple GUI application: 3 buttons are used to control the zoom settings of a simple 3D camera based scene. Next to zooming in and out a third button allows …

A simple website is created from a ASP.NET Core Web App template. It generates a 3d plot on the server and updates an image on the client page dynamically. The user can rotate the plot cube ar …

The example shows a simple scene based on Camera. Common mouse interaction applies. A new interactive mode is enabled by attaching to the MouseDown event of the panel. In the event handle …

A form is created showing a simple scene and two buttons. One button saves the current scene with all user interactions (rotation, zoom etc.) to a file on disk.

The other button …

A simple Sphere is created and added to a common Camera node. This example demonstrates how to apply and modify light to filled objects. The color and shape of the specular reflection i …

This example demonstrates the setup of a 2nd Camera object in the main scene. The new Camera hosts a simple 'tripod' made out of 3 labeled lines. Both cameras are synchronized so tha …

Titles display text in a bordered box on top of regular objects in the sceme. This example creates several titles on top of a simple scene. One title is created for each predefined positi …

The Tripod class is able to display a fancy 3D tripod which can be used to better control axis restricted rotation of the scene. It is also useful for displaying miniature versions of the …

A ILNumerics.Drawing.Gear is used to demonstrate the effect on dynamic updates to shared buffers in a 3D scene.

The application creates a gear shape (preconfigured Triangle …