VOPlot for plotting VOTables

This project has been undertaken by the Inter-University Centre for Astronomy and Astrophysics and Persistent Systems, Pune as part of the VOI initiative.

VOPlot is a standalone java application for plotting different astronomical graphs data stored in VOTable XML format. It allows users to plot numeric data from a VOTable. A list of the features supported in the current version of the VOPlot is given below.

A web-based version of the VOPlot will soon be integrated with the VizieR Catalogue Service so that catalogues can be plotted online.

Please send comments and questions to <voindia@vo.iucaa.ernet.in>.

Download VOPlot v1.0

Sample Plots are available here.

User Guide is available here.

Salient Features

• Ability to plot data read from either a local or remote VOTable.
• Ability to plot different types of plots: The tool supports plotting data in the form of:
• Scatter plots – Plotting of individual points.
• Line plots – Joining the plotted points by line segments.
• Histograms
• Ability to transform data before plotting. Simple arithmetic and trigonometric functions are supported.
• Ability to filter data to create new data subsets, which can be used for plotting.
• Ability to specify manually or let the tool auto-select the axes limits.
• Ability to specify labels for the axes as well as a title for the plot.
• Ability to use logarithmic scales on axes.
• Ability to overlay different plots for the purpose of comparison.
• Ability to specify axes limits & labels after the plot is rendered.
• Ability to zoom-in & out of the plot.
• Ability to save the image of the plot as an EPS file.

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