We are proud to present the new version 5.6 of the Calcpad software. It is much faster than the previous versions and includes a lot of new features. Calcpad is ported to the latest Microsoft .NET 6.0 platform, which is faster than .NET Framework 4.x we used before. On the other side, the Calcpad codeContinue reading “New version 5.6!”

# Author Archives: Calcpad

## Calcpad is free and open source!

In December, 2021 Calcpad joined the big family of open source software. It is now distributed under the MIT License. The source code is available on both SourceForge and GitHub. We welcome any contributors that could help improving the software or developing more useful features. The next big challenge is to add vectors and matrices.

## Even more 3D effects

In the last version I improved the 3D plot shading and added some nice 3D effects. Bellow is the plot of the function f(x; y) = cos(x) + cos(y) + cos(x·y/3)/2 + cos(√(x2 + y2)·2)/2 with the “Rainbow” color scale and the “Shadows” option on: What is new is the specular light effect (the littleContinue reading “Even more 3D effects”

## Math Art with Calcpad

Most people consider math boring, but sometimes it can be really beautiful. Recently I found some unusual application of Calcpad – to draw nice pictures using math formulas. In general, you can plot functions of two variables using the $Map command: $Map{f(x;y) @ x = a : b & y = c : d} IContinue reading “Math Art with Calcpad”

## Plotting with Calcpad 3.2

The new and enhanced version of Calcpad 3.2 was released. Besides other improvements, we added some nice visual effects for 2D plotting. In general, you can use Calcpad to plot functions of two parameters f(x; y), by the $Map command: $Map{f(x;y) @ x = a : b & y = c : d} The resultContinue reading “Plotting with Calcpad 3.2”

## Non-metric units in Calcpad

Calcpad version 3.0 already supports some non-metric units, that are commonly used in science, technology and engineering. A list of currently supported units is available in Units section of the User manual. More units can be easily appended in the next version. We will appreciate your suggestions very much. You can download the latest version fromContinue reading “Non-metric units in Calcpad”

## Content folding in Calcpad

We already know how to hide contents completely in the calculation notes, using output control (#hide-#pre-#post-#show) or Html comments. We already discussed that in the publication: Quadratic equation – part II. However, this is not always a good option. Lets have a look at the online calculation sheet for SLS design of RC beam: https://calcpad.eu/Worksheet/71/sls-design-of-beam-with-rectangular-sectionContinue reading “Content folding in Calcpad”

## How units work?

In this post, we will take a quick look inside Calcpad and see how units actually work. But first, let’s make a brief overview of the theoretical basis. Theoretical basis There are only seven base units in the whole universe. They correspond to the seven physical dimensions: mass – kilogram (kg) length – meter (m)Continue reading “How units work?”

## Calculating with units

Unit conversion is one of the most tedious jobs when doing calculations. Although not very difficult, it is repetitive and time consuming. For example, lets calculate the stress in a steel beam. Assume that span length is in meters, section dimensions are in mm, geometrical properties are in cm2 (cm3, cm4), section forces are inContinue reading “Calculating with units”

## Quadratic equation – part II

In the previous post we created a simple program to solve a quadratic equation. We used the well known method from school: In this post we will make our program more professional and add some advanced features. Currently, it is fine for personal use, but if we want to give it to other users, weContinue reading “Quadratic equation – part II”