SPC Chart - show target and one control limit

[Former Member]

Hi,

Wondering is it possible on the iSPC chart to show a target and only one of the two control limits - i.e. show the user target and the upper control limits - hide the lower control limit. Doesn't seem to be possible via code etc. option seems to be show both or none ?

Regards,

Emmett

[agentry_src]

Emmett,

Interesting enough that there is a posting which is running into the exact opposite problem. They are only showing the target and LCL. But they want both to show up. You may find some insight there.

Good luck,

Mike

[Former Member]

Mike,

Some interesting reading, but ultimately no joy in what i am trying to achieve - i maually set my scales to Max 100 Min 0, My CL to 50 and my UCL to 70 and my LCL to -50 in the hope that the LCL wont be visible , but the chart seems to default to make the user aware that an LCL exists and presents the LCL along the zero scale even though this is not in effect were it will become active. Anyone know of a way around it, is there a single control limit that when the chart value exceeds this limit an alarm will become active but not when it drops below it, all limits seem to be in pairs ?

Thanks,

Emmett

[agentry_src]

I think you are right about the pairs. I played around with it for a little while, but couldn't find a way to exclude the LCL. You may want to use a standard line chart and use the data and UCL as the two lines. It will not take long to do it and I am pretty sure the functions are all available within the Business Logic Editor.

Mike