Download a simple project scheduling tool for Microsoft Excel® - by Jon Wittwer, PhD Updated 6/2/19A Gantt chart is a tool for project management developed originally by Henry Gantt in the early 1900s. It is a type of bar chart that shows the start and end times for each task in a project schedule.
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The tasks are usually categorized using a work breakdown structure with summary tasks for the main project deliverables and sub-tasks that break the project down into a detailed and manageable task hierarchy. If you use Excel or Google Sheets, you can create this type of project schedule with almost no learning curve by downloading Vertex42's free Gantt Chart Template.
DescriptionThis template contains the core functionality needed to create a simple Gantt chart easily. Each row of the worksheet represents a separate task. All you need to do is define the start date and duration of each task. To add more tasks, you just copy and paste rows (or insert a row then press Ctrl+d to copy formulas down). To change the range of dates displayed in the chart area, just slide the scroll bar. To track the status of a task, edit the% Complete column.
The bars in the chart show the% complete for each task. The vertical red line shows the current date. To use the automatic numbering, copy the formula for the appropriate level from the bottom of the worksheet. Update 2/12/2018: The most significant update to the free version in many years: it is now unlocked!While planning a project, you may also want to use a or worksheet. =WORKDAY( enddate,1)Use the WORKDAY.INTL function in Excel 2010+ to define a custom work week (days other than only Sat & Sun)The problem with only using formulas is that you can't see the dependencies between tasks when you view or print the chart. Other Gantt chart software may show dependencies as lines connecting the bars in the gantt chart, but I've never found a simple way for Excel to do that (and the lines can get really messy).The simple approach is to list the WBS number of the Predecessor in another column, like in the critical path example above.
In the CPM template and in Gantt Chart Template Pro, formulas calculate the start dates based on what you enter. If you want to try doing this on your own, here is a formula to get you started:4. Start a Task the next day after a Predecessor task listed in another column. Currently, the only template I have so far that uses the Critical Path Method (CPM) algorithm to show critical tasks and available float time is the shown in the image on the left. The Gantt chart in this example shows the critical tasks in red and the available slack time in gray.The CPM algorithm requires a fully defined task dependency structure, meaning that every task must have a successor (another task that depends on it).
A simple Gantt chart may not need to have the dependencies between tasks fully defined, which is why you will see many project schedules with tasks defined only with a start and end date. Commercial Gantt Chart SoftwareThere are hundreds of software applications for creating gantt charts and project schedules.
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Some of the most popular are those that allow easy online collaboration such as SmartSheet.com and ProjectManager.com. And of course there's Microsoft:. products.office.com - Although a bit pricey, this really is the ultimate software for creating gantt charts and project timelines, partly because it is widely used and you can probably find someone in your office that knows how to use it if you have questions.
Advertisement Other Free Gantt Chart Spreadsheets. vertex42.com - This worksheet may be useful if you want to avoid formulas and just want a way to create a stylish project timeline.
John Peltier explains how to create a gantt chart in Excel using stacked bar graphs. by James Chapman - This page includes a few free gantt chart downloads for Excel that also calculate spend plan. This is done by including labor costs broken down by employee and the number of hours spent on each task. vertex42.com - This template includes a gantt chart for critical path analysis.
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What is Meant by UML?UML stands for Unified Modeling Language. UML 2.0 helped extend the original UML specification to cover a wider portion of software development efforts including agile practices. Improved integration between structural models like class diagrams and behavior models like activity diagrams. Added the ability to define a hierarchy and decompose a software system into components and sub-components.
The original UML specified nine diagrams; UML 2.x brings that number up to 13. The four new diagrams are called: communication diagram, composite structure diagram, interaction overview diagram, and timing diagram. It also renamed statechart diagrams to state machine diagrams, also known as state diagrams.UML Diagram TutorialThe key to making a UML diagram is connecting shapes that represent an object or class with other shapes to illustrate relationships and the flow of information and data. Package DiagramPackage diagrams are a subset of class diagrams, but developers sometimes treat them as a separate technique. Package diagrams organize elements of a system into related groups to minimize dependencies between packages.Object DiagramObject diagrams describe the static structure of a system at a particular time.
They can be used to test class diagrams for accuracy.Composite Structure DiagramComposite structure diagrams show the internal part of a class.Use Case Diagrammodel the functionality of a system using actors and use cases.Activity Diagramillustrate the dynamic nature of a system by modeling the flow of control from activity to activity. An activity represents an operation on some class in the system that results in a change in the state of the system. Typically, activity diagrams are used to model workflow or business processes and internal operation.Sequence Diagramdescribe interactions among classes in terms of an exchange of messages over time.Interaction Overview DiagramInteraction overview diagrams are a combination of activity and sequence diagrams. They model a sequence of actions and let you deconstruct more complex interactions into manageable occurrences. You should use the same notation on interaction overview diagrams that you would see on an activity diagram.Timing DiagramA timing diagram is a type of behavioral or interaction UML diagram that focuses on processes that take place during a specific period of time.
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They're a special instance of a sequence diagram, except time is shown to increase from left to right instead of top down.Communication DiagramCommunication diagrams model the interactions between objects in sequence. They describe both the static structure and the dynamic behavior of a system. In many ways, a communication diagram is a simplified version of a collaboration diagram introduced in UML 2.0.State Diagram, now known as state machine diagrams and state diagrams describe the dynamic behavior of a system in response to external stimuli.