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Scottish Schools Equipme… Research Centre Graphics
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1993-05-20
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SSERC Graphics CD-ROM
7
MORE ABOUT THE FRONT-END program SERCgraph
------------------------------------------
Contents of this ReadMe file
----------------------------
FOUND window
Technical Issues
The Programmer
For more information see the other ReadMe file
called 'FrontEnd1'.
The FOUND Window
------------------
If more than 100 files are matched, your search
was probably too general, and the program
refuses to display all of the entries; only the
first hundred will be shown, enough for anyone!
If you double click on an entry in the FOUND
window, the file will be loaded as if you had
double clicked on it in a directory viewer; it
will be loaded to any program which accepts
that file type (see Accessing files ....).
If you drag the entry from the FOUND window
to an application, it will try to load it there
as if you had dragged it from a directory
viewer. When you finish the drag, it is the
position of the mouse pointer that matters, and
not any part of the dragged rectangle.
Accessing files within the directory structure
----------------------------------------------
If you click ADJUST (the right mouse button) on
an entry in the FOUND window, the directory
holding that file will be opened. This is a
quick way of seeing the directory naming which
was matched. This is useful for identifying all
the data files associated with e.g. a Datadisc
Plus interfacing experiment will have an infor-
mation file and a file for each data channel.
Technical Issues
----------------
The program occupies 200k of memory, so it
should be easy to keep it loaded while drawing
pictures. It will not bother you otherwise. It
does not consume much processor time when idle.
If the program is superceded, or the index is,
system variables can be changed to allow
transparent upgrading. This can allow users to
click on the !SERCgraph icon on the CD, but for
a new version to be loaded.
This improved version now uses more data stored
on disc and less processor time. The program
stores a list of all the words, a list of all
of the occurences of each word, and a list of
the picture files with keywords, file type,
full pathname, and so on. A typical run time
from hard disc is 0.2s and from floppy, 1.5s.
It does involve two drive head moves for each
file matched, and some other stuff, but
performance should still be adequate.
The Programmer of SSERCgraph
----------------------------
Roger Spooner
Design Concept ⌐
Edinburgh
19th April 1993