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”

My first program – quadratic equation

Lets write our first program with Calcpad. Most programming languages usually start with “Hello world!”, but for Calcpad, there is nothing much to do, except to write the text in quotes: Then press Enter and the text will appear in the output. So, let’s do something more useful and solve a real problem. The quadraticContinue reading “My first program – quadratic equation”

Getting started

Calcpad is available for both cloud and desktop on the official website http://calcpad.eu. You can use it as an online programmable calculator with support for complex numbers, variables, functions and graphing. You can also browse the online library and find professional worksheets for solving equations or calculating areas, volumes and mechanical properties. There is also aContinue reading “Getting started”

Welcome to Calcpad!

Welcome to my blog! I am a structural engineer with almost 20 years of experience in the design of nuclear and industrial facilities, factories, residential and public buildings. I am also a fan of engineering, mathematics and programming and you will find a lot of interesting stuff about that here. For all these years I’veContinue reading “Welcome to Calcpad!”