Tag Archives: mathematics

Calculate the present value of a future amount of money in C#

Posted on May 29, 2017 by Rod Stephens

This example shows how to calculate the present value of a future amount of money. Suppose you want a certain amount of money in a given number of years and you know you can realize a specific interest rate (compounded … Continue reading →

Posted in algorithms, mathematics | Tagged algorithms, C#, C# programming, compound interest, discount value, example, example program, mathematics, present discounted value, present value, Windows Forms programming | Leave a comment

Compare the performance of simple arithmetic operations in C#

Posted on May 26, 2017 by Rod Stephens

I saw a post the other day that said division was the slowest arithmetic operation so I wrote this example to see exactly how the performance of multiplication, division, addition, and subtraction differ with floating point numbers. When you click … Continue reading →

Posted in mathematics, performance | Tagged addition, C#, C# programming, division, example, example program, mathematics, multiplication, performance, speed, subtraction, Windows Forms programming | 1 Comment

Make a 3D globe in WPF and C#

Posted on May 25, 2017 by RodStephens

This example shows how you can draw a 3D globe. More generally it shows how you can make a three-dimensional textured sphere in WPF. The example Draw smooth spheres using WPF and C# shows how to make smooth colored spheres. … Continue reading →

Posted in algorithms, drawing, geometry, graphics, mathematics, wpf, XAML | Tagged 3D, 3D globe, algorithms, C#, C# programming, drawing, example, example program, geometry, graphics, mathematics, sphere, tectured sphere, texture, Windows Forms programming, WPF, XAML | Leave a comment

Graph event probabilities in C#

Posted on May 25, 2017 by Rod Stephens

The example Calculate the probability of an event occurring in a given number of trials in C# shows how to calculate event probabilities. This example graphs the results. You can use the example to get some feel for how the … Continue reading →

Posted in drawing, graphics, mathematics | Tagged C#, C# programming, drawing, example, example program, graphics, mathematics, probabilities, probability, unrelated events, Windows Forms programming | Leave a comment

Find the number of trials for an event probability in C#

Posted on May 24, 2017 by Rod Stephens

The post Understand probabilities of unrelated events (and escaping zombies) explains how to calculate the number of trials necessary to reach a certain probability of an event occurring. It explains that if an event has a probability P of occurring … Continue reading →

Posted in mathematics | Tagged C#, C# programming, example, example program, mathematics, probabilities, probability, unrelated events, Windows Forms programming | Leave a comment

Calculate the probability of an event occurring in a given number of trials in C#

Posted on May 23, 2017 by Rod Stephens

The post Understand probabilities of unrelated events (and escaping zombies) explains how to calculate the probability of an event occurring in a certain number of trials. It explains that if an event has a probability P of occurring at each … Continue reading →

Posted in mathematics | Tagged C#, C# programming, example, example program, mathematics, probabilities, probability, unrelated events, Windows Forms programming | 1 Comment

Understand probabilities of unrelated events (and escaping zombies)

Posted on May 22, 2017 by Rod Stephens

Given some event with a relatively low probability, what is the probability that the event will occur if you perform many trials? For example, suppose the zombie apocalypse has arrived and there’s a 1% chance that the zombies will get … Continue reading →

Posted in mathematics | Tagged C#, C# programming, example, example program, mathematics, probabilities, probability, unrelated events, Windows Forms programming, zombies | 2 Comments

Use the yield statement in C#

Posted on April 13, 2017 by Rod Stephens

An enumeration is a sequence of values that a program can enumerate over, for example, by using a foreach loop. In C# you can use the yield statement to make a method that returns an enumeration. The method that builds … Continue reading →

Posted in algorithms, mathematics | Tagged algorithms, C#, C# programming, enumerate, enumeration, example, example program, iterators, mathematics, Sieve of Eratosthenes, Windows Forms programming, yield, yield return | Leave a comment

Make a sunburst chart in C#, Part 4

Posted on April 7, 2017 by RodStephens

The previous post showed how to make a sunburst chart with curved text. This example extends that one so it can draw multi-line text. The previous post used the DrawTextOnArc method to draw curved text. The text is a distance … Continue reading →

Posted in drawing, graphics, mathematics | Tagged angled text, C#, C# programming, charts, curved text, data analysis, drawing, example, example program, graphics, graphs, mathematics, MeasureCharacterRanges, multiline text, path text, rotated text, sunburst, sunburst chart, sunburst diagram, text that follows a path, Windows Forms programming | Leave a comment

Make a sunburst chart in C#, Part 3

Posted on April 6, 2017 by RodStephens

The post Make a sunburst chart in C#, Part 1 shows how to build a basic sunburst chart. The post Make a sunburst chart in C#, Part 2 enhances that example by drawing each node’s text at an angle so … Continue reading →