I have just licensed the software but still
see the pop-up trial message.
Sometimes a browser will cache a jar file in order
to improve the page load speed on the next visit.
Therefore the most likely cause is that the your
browser has cached the trial version of the applet.
To remedy this simply clear your browser cache and
restart the browser. In 99% of cases this solves
the problem - if not then please contact us at -
Support.
^back to top
I have the graphing applet implemented within
a dynamic page ( PHP, JSP or ASP) but the graph is
not displayed and the browser says "cannot find
HbarchartApplet.class".
When a page is served via a dynamic server side
script, the document root of that page is
not necessarily the directory in which the page
resides (as it is with static html pages). In this
case the browser is attempting to locate the jar
file in another directory (usually the root of the
server scripting language).
The solution is to add the "CODEBASE"
parameter to the applet tag. This will tell the
browser exactly where to locate the jar file. For
example if you have your page and jar file in the
location http://www.yourdomain.com/graph/ then the
CODEBASE parameter would be:-
CODEBASE="http://www.yourdomain.com/graph/"
and you full APPLET tag would be:-
<applet
code="HbarchartApplet.class" archive="Hbargraph.jar"
codebase="http://www.yourdomain.com/graph/"
width="450" height="440" mayscript>
In addition any URLs you have specified within
the configuration parameters (eg. data files, image
files etc) should be Absolute (Full Path) URLs
rather than Relative URLs.
ie.
<PARAM
name="chartproperties" value="http://www.yourdomain.com/graph/barprops.txt">
rather
than
<PARAM
name="chartproperties" value="barprops.txt">
If this does not solve the problem then please
contact us at - Support.
^back to top
I have implemented the graphing servlet as
directed but still no graph image appears within my
web page.
With the servlet form of the graph there can be
a number of reasons why the graph image is failing
to display. The most common are:-
Servlet Engine not in operation on the Server
Double check your Servlet Engine is working correctly
and that the graph servlet has been placed in
the correct directory.
Further
Info.
Missing Graphics Environment
If you are running an MS Windows OS then this
will not be the problem.
If you are running UNIX or Linux then check that
your graphics environment has been implemented
(usually X11) and that your Servlet engine is
aware of it and able to use it.
Further
Info.
Error in the configuration data
Double check all URLs specified in the configuration
parameters. We suggest always using Absolute
(Full Path) URLs rather than Relative
URLs. in order to avoid any ambiguity.
To determine the cause the best place to look is
in the Servlet Engine's Error Log. The error message
should provide a clue. If you are unsure of what
the error message is telling you then please feel
free to send it to us at - Support
and we will more than happy to help.
^back to top
The graph image produced is oversized and the
characters of the text elements are very large.
In the Servlet form of the graph the size of the
image produced is taken from the width and height
specified in the configuration file (not the IMG
tag). If the parameters are missing then the image
produced defaults to 100 pixels by 100 pixels. If
the width and height specified in the image tag
are greater then the browser will "Stretch"
the image to fit - hence producing some very strange
results.
The solution is to add the width and height parameters
to the configuration file and set the values to
match those of your <IMG> tag.
eg.
width:
450
height: 440
^back to top
If you experience a problem or require help
/ advice implementing this graphing function then
please feel free to contact us at Support.
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