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Is it possible to get graph's Y axis as log scale

7/23/2011 6:38 PM	Rate (0)
Ratan Experienced Member Joined: 12/7/2010 Last visit: 6/12/2025 Posts: 94 Rating: (0)	Dear all, i am finding solution for trend display's Right AXIS (Y AXIS) value to logarithmetic scale from 2.00E+03 to 1.00E-09 because this value is so near to 0 it can't be used as decimal Y AXIS i need help thanks in advance

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7/26/2011 2:54 PM	Rate (0)
Sandman Platinum Member Joined: 4/29/2010 Last visit: 1/20/2025 Posts: 1557 Rating: (161)	Hello, i never worked with such a logarithmetic scale before. Do you use there 0 and 1 as limit for the y-axis? best regards

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8/3/2011 5:44 AM	Rate (0)
Ratan Experienced Member Joined: 12/7/2010 Last visit: 6/12/2025 Posts: 94 Rating: (0)	yes i have but my value are most of the time between 1.00E-04 to 1.00E-08 so it will show very close to 0 at both value so that's why i need logarithmatic scale for your information this system is for vacuum measurement

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8/3/2011 2:58 PM	Rate (0)
tyro Posts: 9 Rating: (0)	I dont think you can configure the graph's Y axis as a log scale. One way is, calculate log value in the PLC or using VB script and then display it.
tyro Posts: 9 Rating: (0)
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8/3/2011 6:09 PM	Rate (0)
Ben Rad Bronze Member Joined: 7/28/2010 Last visit: 8/31/2024 Posts: 184 Rating: (11)	Hi Ratan, The Y-Axis is linear so you can't display values in logarithmic scale. The range you are looking it is 10,000 ( which is a large number. I recommend: 1. Scale down your numbers by 100. Instead of having a range of 10,000, you will have 100. 2. Before displaying trend, find Max and Min value and use those values as Begin and End for Y-Axis. Regards, Behnam www.winccflexiblemastery.com

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1/10/2025 9:58 AM	Rate (0)
aiden_elcock Joined: 1/10/2025 Last visit: 4/8/2025 Posts: 1 Rating: (0)	Hi Ratan, did you manage to solve this as i a currently in the same boat needing to have 2000mBar to 1E-10 on a trend chart

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