Data Browser

A graphical interface to simplify the examination of various
images and movies and allow some simple image processing tasks.
File formats used by TRACE, Hinode, SDO, and other solar instruments
can be input. Files not recognized will pop up an error message.

There are 15 display windows available. Choosing a display window
causes the next file read to use that window and destroys any
previous image in that window. Pleae note that many of the
files used in browser are large and reading and displaying
may take a while, especially over a network.

The top menu bar has the items: File, Display, Commands, Help

File Menu

This displays a pull down list with several input modes and
operations including "Exit". These are briefly described below:

file viewer - This is intended for single images or line plots.
It pops up a file selection dialog (a standard motif widget)
which shows directories and files. The directory path will
initially be the one you were in when you started browser up.
The directories box then contains subdirectories in
this path and the file box contains files. Navigation up and
down directory trees can be accomplished by double clicking
directories or using the filter button. Note that a subset
of the files can be displayed using a partial file name and *'s
in the filter text. After a file name is found, it can be selected
by clicking on it. Then either a double click or hitting the
display button will cause the file to be read and displayed if
possible. You can also use the "inspect" button to get some
information about the file without reading the entire thing. This
is mainly useful for FITS files since it displays all the keywords.

file sets - Not used much anymore. This button pops up a special
widget that allows one by one displays of a series of files defined
by a template or from some 3-D files.

save window positions - this will save the current location of
windows (at least most of them) to a file defined by the environmental
ANA_PREFERRED_POSITIONS. You should have this defined to a local
directory. If you are a tcsh user, put something like

setenv ANA_PREFERRED_POSITIONS /net/shine/Users/shine/anapositions.txt

in your .cshrc file.

SDO and other mission buttons - these each pop a widget allowing data
access for various data sets usually associated with a satellite instrument.
The styles vary and actual access depends on having local copies of the
data and the environmental variables set to point to them.

save - A save widget appears that allows saving data in various
formats. See help in the save widget for more details.

print/save any window - suppose to let you print a window

Exit - quits the browser.

Display Menu

screen mapping - Brings up a widget for controlling the color
tables and contrast of the display.

image mapping - Brings up a widget that allows control over how
the image data is mapped to the screen range of values.

orientation, etc - This pops a widget that has a button to select
any of the 8 possible image orientations (which only affects
subsequent image displays) and the compression threshold.
Large images (bigger than the threshold) are compressed by
a factor of 2 before being displayed. The original data is
used for any processing however.

Help Menu

Currently only one button which brings up this file.

further notes

When an image is displayed in window n (where n ranges from 0 to 14),
the data is internally stored in ANA (which runs browser) in an
array named $datan (where n is a number) in its original form. These
arrays are scaled for display and the display may not show all the
dynamic range of the originals. All image processing is done with
the original form. You can also use normal ana commands to manipulate
these arrays from the shell you in which you started the browser.
It will also show various messages (as well as errors) while the
browser is running.

Several tools are available for manipulating the data associated
with the windows. These are in a series of pop up menus at the
bottom of the browser widget in 4 main classes. Each widget has its own
help button. There is also a "screen mapping" button which pops
up a widget to adjust the screen constrast and cutoffs. It also has
a help button for further details.

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