This is really three feature requests, one to arrange the labels on the legend so that they correspond to the trend position in the subplots.
the second is to make a true isolated graphing mode available without having to create multiple subplots
For example, on RSView32 we make extensive use of isolated graphing. This mode is not available in the Ignition Easy Chart Control but provides a quick and easy way of viewing trends with radically different scales (i.e. flow = 0-2000 GPM, ph = 7-10 pH) on the same plot. The nice thing about this is that the legend created by the RSView32 trendx control has the tag descriptions listed in the same order as the trends on the plot. This means that the plot is still discernable if you print the trend to black and white
Conversely if you create an easy trend the legend will list the pens in alphabetical order, so you need to juggle the sub plot order to try and get the legend labels and the trends to match. This leads to some not so logical orderings of sub plots. Perhaps a better way of doing it would be to order the labels on the legend by sub plot position first and then by alphabetical order.
Yes I could just place my own legend box in but this is a pain and it would be nice if it just ‘worked’ right in the first place.
Alternatively you could provide an isolated graphing checkbox to allow the trend to act in the same way as Trendx (i.e. without configuring subplots), this way the trend legend could just display them as they appear. A way of moving trends up and down in their order would have to be provided.
Third feature request:
The use of subplots currently uses quite a lot of screen real estate (I’m talking about the 5 pixels or so between sub plots). This isn’t really functional and consumes space which becomes an issue when you are trying to squeeze a small plot with 2-3 subplots on it into a small area. If this could be eliminated this would be great (just a one pixel line is fine).