Steema Central

Hi,

I have to visualize a dependence of several kinds of data on time. For example, A=A(time), B=B(time), C=C(time) and so on. Bottom axis shows the time and the left axis shows the data series, be it A, B, C etc. I have a legend with check boxes that user can use to toggle the visibility of the series A, B and C. So far, so good.

Now, things are getting a bit complicated. The above data trends (A, B, C) are related to a single "channel", but I now need to display the data coming from multiple channels in the same chart. The approach I took uses the bottom axis as a time axis that is shared among all series and I created a given number of custom vertical axes (one custom axis per channel). So for example, if there are 5 channels and I have 3 data series per channel (A, B, C), it totals to 3x5=15 series per chart.

Now, my legend shows all 15 series (for all channels), but I'd rather want to show it only A,B,C "group" series. In other words, I'd like to be able to click on the group "A" checkbox in the legend and toggle the visibility of all "A" series for all channels at once. Is there an easy way to achieve this?

Thanks in advance!

Hi Ivo,

Yes, you can do as in the What's New?\Welcome!\New in Legend\Series Group example at the features demo, available at TeeChart's program group.

Hi Narcís,

Thanks for the suggestion! Do you know if this is supported by TeeChart v7? I'm registered user of version 8 as well but I do not have it installed at the moment (so many things to do before I'll be able to migrate to RAD Studio 2007 and TeeChart v8 ).

Hi Ivo,

No, this feature was implemented for v8.

Ok, then guess what - you have just given me a reason to update my development environment today.

Hi,

Is there a way to programmatically modify an individual series' checkbox state? For example, can we set some sort of property to cbChecked or cbUnchecked?

Thanks,

Sajjad

Hi Sajjad,

Yes, try using series' Active or Visible properties:
Hope this helps!

Thanks Narcis! Worked just fine!