ABU

          Astro-graph Building Utility (ABU) is an applet for plotting different astronomical graphs
using data stored in VOTable format. It is developed by Persistent Systems, Pune in association
with IUCAA, Pune as a part of the Virtual Observatory India (VOI) initiative. It is integrated with
the VizieR Catalogue Service and can be used to plot any catalogue by selecting output layout
as "Plot (VOPlot)". Click here for Release Notes and disclaimer information.

          ABU uses Ptplot 5.2, a 2D data plotter and histogram tool implemented in Java. Ptplot has
been developed at EECS department at the University of California, Berkeley. 

 

              Plotting a VOTable

1.     To plot a VOTable, search for the required catalogue on VizieR, select a VOTable from the
list and select the output layout as "Plot (VOPlot)". 

2.     After clicking on "Submit Query" button the plotting applet loads. Note: Only numeric
columns from the VOTables can be used for plotting. 

3.      Once the applet is loaded, you can see the numeric fields listed as columns in the
dropdown list box. 

A sample plot is shown below: