Support Board
Date/Time: Sun, 15 Nov 2026 20:21:40 +0000
[Numbers Bars] footprint volume rows vanish or get covered when chart height / price scale
View Count: 10
| [2026-11-15 20:07:47] |
| User719512 - Posts: 542 |
|
Hi Sierra Chart Engineering, Posting this here for your evaluation. If a paint-order fix here makes sense, it would benefit anyone using Numbers Bars as a footprint. Two identical Numbers Bars (footprint) charts, same symbol, same session, same data. Only the chart height / price scale differs. Volume-at-price Delta rows on a bar paint, fail to paint, get covered by a shorter row at the same pixel, or the longest row disappears. Easiest place to see it in the attached screenshot is the last bar (12:35, volume 2715, delta -25). The silhouette is not the same on the two charts. Other bars shift too. Repro: 1. Numbers Bars configured as a footprint (bid/ask volume at price on each bar). 2. Leave the data alone. 3. Drag the bottom of the chart window up and down, or drag the price scale to compress/expand ticks. 4. Watch a single bar, especially the last one. Rows appear, vanish, or a shorter row covers a longer one. This is consistent with sc.RegionValueToYPixelCoordinate being many-to-one once a tick is smaller than a pixel. Several prices share one yy. If rows are drawn in an order that is not longest-first, a later shorter fill at that yy covers the longer one, or a 0-1 px row never shows. Related writeup (ACSIL Volume Profile, same mapping): [perf] ACSIL Volume Profile paint: skip thin borders, skip duplicate Y Screenshot of the two heights is attached. Short recording of resizing the window / price scale is attached as well. Chartbook attached for convenience also. |
 Sierra-Footprint.png / V - Attached On 2026-11-15 20:02:28 UTC - Size: 90.49 KB - 1 views Private File  Sierra Chart Footprint.Cht - Attached On 2026-11-15 20:03:24 UTC - Size: 20.85 KB - 1 views |
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