According to the functions that you need for your Gantt charts, you can purchase three cascading modules of VARCHART JGantt.

Basic (Viewing only)

The module Basic provides all necessary Gantt functions for viewing only including:

• all graphical layout functions for Gantt charts like multi-level grouping and multiple tasks per row in overlapped or optimized mode
• data dependent assignment of graphical attributes via filters or so-called maps
• multiple calendars and calendar grids
• multiple sections of different scale as well as collapsing non-work periods in timescale
• printing with comfortable paging and page preview

Data Editing

The module Data Editing provides all functions of editing application data including:

• moving bars horizontally and vertically or changing durations (does not apply to JSF)
• create, delete or modify any application data like tasks or activities, group titles or links
• in-place editing in table cells and changing data in a data editing dialog (does not apply to JSF)
• Drag & drop - Drag from one JGantt instance to another one or from a different application to an JGantt application and vice versa  (does not apply to JSF)
• PERT/CPM scheduling for early and late dates as well as total and free floats
  
  

Histogram

The module Histogram provides all functions to show resource loading Histograms including:

• calculation of resource loads from application data and displaying them, interactive changes like moving a bar in the Gantt chart are reflected in the Histogram accordingly
• displaying and editing of resource availability showing over and under loads
• numerous graphical layout features for numeric scale, shading, line styles etc.