The Evolution of the Gantt Chart

Navigating the intricate landscape of project management in the dynamic business realm requires a comprehensive tool that not only captures the intricate interplay of tasks and timelines but also provides a visual roadmap for successful execution.

In this case, even an advanced bullet chart won’t do the job because there will be too many variables: the task name, its start, the project end date, and the percentage of completion.

A Gantt chart will be helpful here — a captivating and profoundly effective visualization that has risen to prominence as the linchpin of project tracking and scheduling.

The origins of the Gantt chart can be traced back to the early 20th century, a time when industrialization was transforming economies and propelling the need for more structured and efficient project management.

At the heart of this transformation was Henry L. Gantt, an American mechanical engineer, and management consultant whose innovative visualization tool revolutionized how projects were planned, monitored, and executed.

In the early 1910s, Gantt became immersed in the world of scientific management, a burgeoning discipline aimed at increasing productivity and efficiency across a variety of industries.

Gantt aimed to tackle the challenges of coordinating complex projects, particularly those involving intricate interdependencies and crucial timelines.

Gantt’s breakthrough came in the form of a graphical representation that elegantly captured the progression of tasks over time. Unlike the static tables and textual descriptions that predominated the era, Gantt introduced a visual canvas that intuitively displayed project schedules, task durations, and overlaps. His innovation lay in merging a timeline along the horizontal axis with bars representing tasks on the vertical axis, creating a dynamic representation that conveyed both a chronological sequence and task relationships at a glance.

As technology advanced, so did the Gantt chart’s capabilities. With the advent of computers, digital Gantt charts emerged, further enhancing their flexibility, scalability, and ease of use. Modern project management software integrated Gantt charts, enabling dynamic adjustments, real-time updates, and the incorporation of additional data points beyond Gantt’s original vision.

This chart is highly appreciated by project managers as it assists in monitoring the stages of task completion and project timelines as a whole. The left side of the diagram displays a list of projects or tasks, while the timeline is positioned at the top. Each task is depicted as a separate bar, with its length representing the duration. The progress of each task is displayed within the bar using fill patterns. A vertical dashed line indicates the current date.

Different software platforms have varying processes for creating a Gantt chart, and we will discuss how to create a Gantt Chart in Power BI.

In the AppSource gallery, there are more than 10 different variations of Gantt charts, and many of them can help you achieve similar results. We will look at several examples of this diagram — from different developers.

Microsoft’s Gantt chart is simple, straightforward, and, of course, a free option in Microsoft Power BI.

Microsoft’s Gantt is a pretty classic example here, there are similar diagrams in other products of this company — in Excel, as well as in specialized project management software — Microsoft Project.

You can make both simple diagrams and hierarchical diagrams with nested tasks.

The main limitation lies in the number of levels in the hierarchy, which is restricted to only two: “parent” and “task”. However, stakeholders often desire the ability to drill down into subtasks. Unfortunately, there are no tricks or workarounds to add more than two fields in this case.

The image below presents you a more complex sample by the xViz vendor, closely resembling the interface of a professional project management system, like Microsoft Project and other similar platforms. You may have seen project network graphs printed on dozens of pages, so fitting all that information onto a single screen can be quite challenging.

You can see an example of a Gantt chart that resembles project management system interfaces:

Using the example of this visual, let’s see how the data for the Gantt chart will look like. And also how to fill in the field name in Power BI.

In the source data, we have included the stage, task, responsible individual, and status (completed, in progress, etc.) for each project. It is crucial to store these fields in separate columns

Next, we will add the Gantt by MAQ Software visual to the report canvas and start visualizing this dataset.

Pay your attention to the KPI field. Usually we use this term for total numbers, but for this Gantt chart it is used for text categories, comments and other additional information. In this case, we will put an “In charge” field there.

In conclusion, we have introduced you to the top three Gantt charts. Among other versions, there is no clear favorite, as each has its own limitations in the free versions and may still have bugs, even in the paid versions. In some cases, it may be easier to develop a custom visual tailored to your specific project needs.

No matter what version of the chart you have, here are the basic steps to follow.

There are no misuse cases for the Gantt chart. You either have project timeline data or you don’t. If you have a different kind of data, it may be better for you to choose a different type of visualization.

In other software packages and programming languages, Gantt charts are also successfully created and possess their own features. You can create such a chart in Excel, Tableau, specialized project management software like Jira, Microsoft Project, Redmine, as well as using JavaScript libraries and other programming languages.

The Gantt chart’s adaptability lies not only in its creation, but also in its ability to embrace change. “The first casualty on the battlefield is the battle plan.” Recognizing that shifts and adjustments are a natural part of the project’s lifecycle empowers us to approach change with equanimity.

One crucial takeaway is the value of periodically revisiting the Gantt chart. Keeping the initial agreed-upon plan and Gantt chart as reference points allows us to gauge the extent to which our journey has diverged from the original path.

In a global project landscape, where multiple moving parts demand synchronized coordination, the Gantt chart becomes not only a roadmap but also a magnifying glass, revealing areas where adjustments are needed.

Another type of charts that is useful in management is the bullet chart.