Re: isis order-sorting summary function

On Thu, May 24, 2001 at 11:42 -0400, David Huenemoerder wrote:
> I do it like this:
> 
> isis> ilib=getenv("HOME") + "/libisis";
> isis> ()=evalfile(ilib + "/plot_order_summary.sl");


Managing a library of scripts may be simplified a bit by using the
add_to_isis_load_path() and require() functions. Unfortunately,
the manual is a bit out of date on these...

For example, if you put your scripts in "/home/bob/isislib",
you could add this line to your .isisrc:

          add_to_isis_load_path ("/home/bob/isislib");

to tell ISIS to search that directory to find files named by the
'require' function.

Now, suppose you're writing a script which needs utility functions
defined in "util.sl" which is kept in /home/bob/isislib.

To load those utility functions, add the line
          require ("util");
to the top of your script.

When you run the script, ISIS will search for the file "util.sl"
along the colon-delimited list of directories specified in the
ISIS_LOAD_PATH environment variable (which can be specified in
your Unix shell environment or by the add_to_isis_load_path()
function as above).

This way, you don't have to hard-code file-search paths into all
of your scripts.  If you later decide to move your scripts to
a different directory, you need only change ISIS_LOAD_PATH
and everything else should work.


> There WILL be side affects on an isis session - I don't know how to
> avoid this (e.g., connect_points and points styles, xrange, yrange).
> (Help? unless there is a global plot structure to save and replace?
> like !p in IDL?)


I assume you're referring only to changes in plot format? Since
those are device-specific, such format changes should disappear
when the associated plot device is closed.

When you open a new plot device, it should get the standard
defaults for all its format parameters.

John


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