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The Current Table Properties panel on the right hand
side of the Control Window contains a number of
controls which relate to the currently selected table and its
Apparent properties;
they will be blank if no table is selected.
Here is what the individual items mean:
-
Label
- The short name associated with the selected table.
It is used in the
Table List panel and in labelling view windows so you can see which
table they refer to. It usually set initially according to where
the table came from, but you can change it by typing into the text field.
-
Location
- The original source of the selected table.
This is typically a filename or URL (perhaps abbreviated),
but may be something else depending
on where the table came from.
-
Name
- A name associated with the selected table.
This may be derived from the table's filename if it had one or from
some naming string stored within the table metadata.
-
Rows
- The number of rows in the selected table.
If the current Row Subset does not include all the
rows, then an indication of how many are visible within that subset
will be given too.
In certain circumstances, some other information may be presented here:
the table metadata may contain a flag indicating that an error or
overflow occurred when generating the result of a (VO) query.
In particular, if the text "OVERFLOW" appears,
it means that you may not have got all the rows that you asked for
because of size limits applied by the service.
(In technical terms: the content of non-
OK
INFO/@name="QUERY_STATUS"
VOTable nodes is summarised here,
in accordance with the
DALI standard).
-
Columns
- The number of columns in the selected table.
If some are currently hidden
(not included in the current Column Set),
an indication of how many are visible will be given too.
-
Sort Order
- The column (if any) which determines the current
Row Order.
A selector shows the column (if any) on which the rows of the
Apparent Table are sorted
and allows you to choose a different one.
The little arrow beside it
indicates whether the sort is ascending or descending.
-
Row Subset
- The name of the current Row Subset.
A selector shows the name of the subset which determines which
rows are part of the Apparent Table
and allows you to choose another one. "All" indicates that all
rows are included.
If you select a new value using this selector, then other windows
which display subset-sensitive information for the current table
will change their displayed subset to the newly-selected one.
However the reverse does not happen - you can change the visible
subset in the statistics window for instance or one of the graphics
windows and it will not affect the value displayed here.
-
Activation Actions
- Summarises the currently available and active
Activation Actions.
A value of the form active-count / available-count
is displayed, where
active-count is the number of actions that currently take
place whenever a row is activated, and
available-count is the number of actions that could be
made active without any additional configuration
(a number of other actions could probably be used too, but require
some manual setup).
You can view and configure the activation actions by using the
Activation Actions toolbar button to
open the Activation Window.
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Next: Memory Monitor
Up: Control Window
Previous: Table List
TOPCAT - Tool for OPerations on Catalogues And Tables
Starlink User Note253
TOPCAT web page:
http://www.starlink.ac.uk/topcat/
Author email:
m.b.taylor@bristol.ac.uk
Mailing list:
topcat-user@jiscmail.ac.uk