Can I add a legend to an IO Graph?

asked 2018-06-28 14:27:08 +0000


I have been creating graphs using IO graph. At one point I'm sure, as I moused over the graph, a legend overlayed the top right corner of the chart area. Now I can't seem to get that again.

The problem is that when I save a graph as a .png, the resulting image doesn't include a legend.

How can I get a legend into the .png file?

Thanks and regards...Paul

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That's bizarre. Suddenly the legend has appeared and is now being output in the .png. the situation is this:

If the graph includes a plot with packets as the Y axis unit, the legend appears. If the graph has only plots with Y axis units of Bits, the legend does not appear.

Is this intended?

PaulOfford gravatar imagePaulOfford ( 2018-06-28 15:07:47 +0000 )edit

Is this intended?

My guess is that it isn't and a bug report should be filed. Actually, a bug report should probably file filed even it was intended, because it seems to appear very inconsistently. For example, with Wireshark 2.6.1:

  • No legend appears if only 1 filter, "All packets" is graphed, whether the Y-axis is packets, bits or bytes
  • If another filter is graphed and the Y-axis for both is the same (packets, bits or bytes), then no legend is displayed
  • If another filter is graphed but the Y-axis is different, then the legend is displayed.

So I think, "Why not just always display the legend?"

cmaynard gravatar imagecmaynard ( 2018-06-28 17:54:35 +0000 )edit

Thanks Chris - I will submit a bug report.

PaulOfford gravatar imagePaulOfford ( 2018-06-29 08:34:26 +0000 )edit

Thanks for the work around PaulOfford. This has been driving me nuts for a while now. Hopefully it gets fixed soon.

Also, I agree with cmaynard, the legend should be displayed at all times. Or it could be a simple check box to enable/disable the legend.

sheepdog gravatar imagesheepdog ( 2018-09-27 16:00:52 +0000 )edit