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Chapter 14: PROBLEMS WITH EASIGRAF
EASIGRAF is not quite as polished or robust as EASISTAT.
It may not be able to deal with huge amounts of data, and
there may be some things which you would like it to do
but which it cannot.
14:1. Unrecognised display
type
The most likely problem to run into is that you will get
an error message saying that EASIGRAF does not recognise
the display device attached to your computer. To get
round this error you will need to set the DOS environment
variable FG_DISPLAY to the correct monitor type. How to
do this is explained in the section titled "Setting
FG_DISPLAY" in the chapter on "Getting started". You
should also try doing this if the display wiggles about
dramatically or is unclear in some other way.
14:2. Out of memory
Another possible problem with EASIGRAF is that it fails
with an "Out of memory" message of one sort or another.
If EASIGRAF is being run from EASISTAT then you can
almost always get round this problem by quitting EASISTAT
first and then running EASIGRAF on its own. Otherwise it
may help to consult the chapter in the EASISTAT manual
which deals with such problems and to try the same
approach as described there. Alternatively this error may
be caused because of a fault in the format of the graph
file supplied. Use the EDIT program to examine the graph
file and see if you can see any problems.
14:3. Problems with the
graph file
EASIGRAF may complain that it cannot open the graph file,
in which case you should check that you have specified
the full file name correctly, including if necessary the
drive and subdirectory. Very occasionally EASIGRAF may
also produce this message when there is not enough memory
to open the file, but this situation will be unusual
because in general there will either not be enough memory
to run EASIGRAF at all or there will be enough memory to
run the program and open the file and any problems with
memory will occur later.
If EASIGRAF exits as soon as it tries to read the graph
file with a complaint about too many values or titles in
the wrong place, then use the EDIT program to check the
file syntax carefully according to the specification
described in the previous chapter.
Certain kinds of graph can cause problems for EASIGRAF.
For instance if you produce data from the ANOVA command
and then plot column X against column Y it is certain
that no row will have a value in both column X and Y at
the same time - one or both will be missing. Doing this
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Problems with EASIGRAF
sort of thing will certainly confuse EASIGRAF, so we
advise you to try to avoid it.
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