The Plot Table action takes a URL or filename in the table that points to a table in one of TOCAT's supported formats, and displays a plot window that can plot the data from that table. This is like loading the table (e.g. with the Load Table action) and then opening a plot window in the usual way, but doing it this way does not actually load the table into TOPCAT's list of loaded tables, and every time the action is activated, the data from the last invocation is just replaced with that from the current one (as far as possible - the tables need to have a similar structure for each row). In the plot window, the referenced table is listed first in the Table selector (or selectors, if multiple layers are configured) with the special name "0: Activated". All the currently loaded tables are available in the window as well as the activated one, so you can plot those for comparison in the same window if you want.
The configuration of this action lets you select the type of plot window to use, but other than that does not let you specify in detail how you want the plot to look. However, after you have activated the action once, you can interactively configure the plot as required using all the usual plot options, and subsequent activations of the same action will just update the plot with the data from the newly activated row, without affecting the rest of the configuration. This makes it easy to visually compare column data from tables linked in different rows of the original table. Note however that the details of the plot window configuration are not included when a session is saved.
Configuration for Plot Table action
(auto) may be used, otherwise the correct format
must be chosen from the list.
<syscmd" or "
syntax described in Section 4.2 may be used to
preprocess the input stream before the table is loaded.
This option is usually not required, and has security implications;
if it is switched on in an action loaded from a session file,
the security panel
will be displayed.