We compare euler APE and various other methods that are currently available and we discuss differences between their generated diagrams in terms of accuracy and ease of understanding for real world data.ĭata is routinely generated and analysed. We describe the drawing method adopted by euler APE and we discuss our evaluation of the effectiveness of euler APE and ellipses for drawing random 3-set data.
#SKETCH FOR MAC PROPORTIONAL SCALE TEXT SOFTWARE#
We present euler APE as the first method and software that uses ellipses for automatically drawing accurate area-proportional Venn diagrams for 3-set data. Ellipses are more flexible than circles and are similarly smooth, but none of the current automatic drawing methods use ellipses. However, polygons are non-smooth and non-symmetric, so the curves are not easily distinguishable and the diagrams are difficult to comprehend. Other methods use polygons to draw accurate diagrams. However, circles cannot draw accurate diagrams for most 3-set data and so the generated diagrams often have misleading region areas. Most methods depict the data sets as circles, as they perceptually pop out as complete distinct objects due to their smoothness and regularity. Drawing these diagrams manually is difficult and current automatic drawing methods do not always produce appropriate diagrams. The area of the regions formed by the overlapping curves is often directly proportional to the cardinality of the depicted set relation or any other related quantitative data. Venn diagrams with three curves are used extensively in various medical and scientific disciplines to visualize relationships between data sets and facilitate data analysis.
0 kommentar(er)
