Charts are displayed in several places in ntopng's web interface. I find these
difficult to interpret beyond a one day date range because of several problems:
- It doesn't display the dates on the time axis.
- The times are relative to the current time, so they aren't whole hours.
- The chart appears to always be divided into the same number of segments, so
the interval between segments isn't a whole number of hours.
- A cosmetic issue, but if I scale the display (in Firefox), at some scales
some of the divisions disappear.
E.g I'm looking at a 1 week chart now, and the values on the axis are 11:19:00,
21:13:20, 11:06:40, etc. It makes it hard to even tell where each day begins.
Looking at the webpage source, I found this function:
function getTickFormat(diff_epoch) {
var tickFormat;
if(diff_epoch < 86400) {
tickFormat = "%H:%M:%S";
} else if(diff_epoch < 2*86400) {
tickFormat = "%b %e, %H:%M:%S";
} else {
tickFormat = "%b %e";
}
return(tickFormat);
}
That looks to me like it's supposed to display the date and time if the range
is over a day, and just the date if it's over 2 days. But the only use of that
function in the page source is:
var tickFormat = getTickFormat(0);
Is this variable scale format a feature that was never fully implemented?
Peter Shute
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