Scrolling line chart

[RGV250]

Hi,
I have been looking at the enviroment monitor demo which is close to what I am looking for. The bit I am not happy with is the line chart as when it is full it carries on showing new data but the x axis compresses so over time it will get unreadable.
I would like to have a scrolling chart of the last x samples, I changed the x axis autoscale to "no" but that just meant that as soon as the chart was full it stopped showing live data.
I have a thought that to do what i require I need to write the data to a FIFO buffer and then write the contents to the chart.
This seems like a lot of work and possibly will make the display very slow so I wondered if I am on the right lines or if anyone has any better solution.

Regards,
Bob

[BenR]

Hi Bob,

Try the historic chart and hopefully that will do what you need.

[chipfryer27]

Hi Ben

Admittedly I'm thicker than a porridge milk shake but I can't see any historic chart option in Web Developer.

Regards

[medelec35]

Hi Iain.
Historic chart is within PC developer, which the environmental monitor demo uses.

[chipfryer27]

Hi Martin

Thanks. Glad to hear I'm not such an idiot after all I really should get back into Web / PC developer as I've not touched it in a long while. It is such a useful feature.

Regards

[RGV250]

Hi Martin,
Unfortunately I need something for the web developer. I am assuming there are technical reasons why this and xy chart and circular buffers are not in web developer.

Regards,
Bob