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Dataplot

Introduction

Dataplot can draw a curve as a character or plot symbol at each point, as a connected line, as a spike from the point to a base, as a bar from the point to a base, or as any combination of the above (including drawing none or all of them). The choice is determined by the LINE, CHARACTER, SPIKE, and BAR commands. The switches for these commands work independently of each other.

Bar Types

The BAR switch is most commonly used to generate bar charts. It is also used to plot histograms (although Dataplot handles this automatically). The following types of bar charts are commonly used in business and presentation graphics:
  1. Standard bar charts (a bar is drawn from the data point to the X axis.
  2. Grouped bar charts (bars are drawn for 2 or more groups of data).
  3. Stacked (or divided) bar charts (the bar is divided into several intervals).

All of these formats are possibe in Dataplot.

The short designations (e.g., BL for BLANK, SO for SOLID, DA3 for DASH3) allow for the specification of a large number of bar types on a single command line, as in

For single-trace plots, as from

Dataplot makes use of the first bar type specified.

For multi-trace plots, as from

Dataplot makes use of the respective bar types for each trace; thus the first bar type defines the type for the first trace, the second bar type defines the type for the second trace, and so forth. Multi-trace plots are the mechanism for generating group and stacked bar plots in Dataplot.

Dataplot allows you to set various attributes for both the bar border (color, line style, thickness) and the bar interior (solid fill, hatch fill pattern, color, various others). The attributes for the border and the interioir are set independently. The following example shows a few of these attributes.

The Dataplot commands that generated this plot were: