Aizad Fauzi <[email protected]> wrote:

> I've installed these three components and my graph is working perfectly.
> I create a symlink of the PNG to the root of my www folder so that I can 
> easily view the graph directly.
> However, in order for the graph to be updated, I need to log-on to the router 
> and view from there in order to refresh the graph.
> 
> Are there any tricks that can make the graph automatically update by running 
> some command to setup as crontab?

How are you generating the graph ? How are you viewing them when you log in to 
the router ?

There are two ways to do it - create graphs periodically in case you want to 
view them, or create them on demand.

The first of these means using some tool (eg cron) to run commands to generate 
the graphs periodically. The downside of this is that you expend resources 
generating graphs that you will most likely never look at.

The alternative is to trigger graph creation when you want to view it - 
typically by CGI scripts on the server.

I suspect that when you log onto the router (presumably via it's web UI) and 
view the graph, that's triggering a CGI script that generates the graph there 
and then - if you right click on the graph image and open in new window/tab, 
what URL do you get ?. This normally also creates an image file which hangs 
around until it gets over-written by the next version. If you statically link 
or view this image file, then it won't update on it's own.
The fix for this is probably to link to the CGI script rather than the static 
image file - that way, when you view it you'll always get an up to date version.

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