Support Board
Date/Time: Sun, 24 Nov 2024 01:16:37 +0000
[User Discussion] - Let automatic zero-based scale range be unit-based for logarithmic scale type
View Count: 190
| [2024-07-12 18:41:54] |
| vortega23 - Posts: 7 |
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Dear Sierra Chart Support, In Scale Settings, I request something similar to "automatic zero-based" range that will work with the logarithmic scale type. How about if, when both "automatic zero-based" scale range and "logarithmic" scale type are selected, the scale range is made unit-based instead of zero-based? That is, starting on one instead of starting on zero. Or add "Automatic Unit-Based" as a Scale Range option in Scale Settings. Or change "User Defined" to allow a blank or "auto" top of range be automatic. Anything of the sort would help tremendously those of us who are looking for this kind of behavior. Thanks in advance. |
| [2024-07-15 05:32:31] |
| vortega23 - Posts: 7 |
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Here is why. Normally the reason people turn to the logarithmic scale type is because, on volume subgraphs (at the bottom of a candlestick chart), a single spike in volume can render the rest of the volume bars so small they are hard to see, much less provide helpful information. The logarithmic scale type makes spikes much less pronounced, but the problem is that the volume subgraph is zero-based, and logarithmic scaling can't handle zeroes (or negative values, though that's irrelevant for this application). Now, while it is possible to set the scale range to "automatic" and have it work with the logarithmic scale type, the resulting subgraph is not zero-based, but the bottom of the range is the volume bar with the least volume in the timeframe being displayed... and Sierra Chart doesn't even display what that value is. And to make things worse, as soon as a new candle starts to form, the scaling of the volume subgraph completely changes due to the new volume bar being nearly at zero, which is visually very distracting. So the only solution is having a very small but non-zero, fixed bottom of range, while allowing the top of the range to be automatic--to adapt to changes in volume due to time of day, changes in bar period, or anything of the sort that will change the top of the range. But Sierra Chart doesn't currently allow a fixed bottom-of-range to be combined with an automatic top-of-range, hence this support request.
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| [2024-07-15 14:30:21] |
| Sawtooth - Posts: 4118 |
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Try this: 1. In the Volume study, set the Scale Range to Automatic, set the Scale Type to Logarithmic. 2. Add the Line study, set the Chart Region to the same as the Volume study, set the Value to 1. |
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