Heatmap zoom bug (inaccurate bid & ask lines)

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latnemele
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Heatmap zoom bug (inaccurate bid & ask lines)

Post by latnemele » Thu Nov 26, 2020 4:32 pm

The bid & ask lines disappear on some zoom levels. Here are a couple examples.
  1. In this example zooming out hides the bid & ask lines. The volume bubbles appear to float above the bid & ask: link
  2. Here the zooming out hides some of the local lows, again you have to zoom in to see the real price that was reached: link
Are these known limitations of the heatmap, or are they bugs that can be solved?

Svyatoslav
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Re: Heatmap zoom bug (inaccurate bid & ask lines)

Post by Svyatoslav » Thu Nov 26, 2020 4:35 pm

Hi. That's not a bug, technically speaking. That's aggregation happening - basically you only see bid/ask value at the end of each pixel. I do understand that it would look nicer if we'd somehow make it so min/max values are always visible, so this is a valid feature request.

Note that one could write an API indicator that would show min/max of bid ask at every point or apply any other type of aggregation that you like, so this could also be solved via an external API module.

latnemele
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Re: Heatmap zoom bug (inaccurate bid & ask lines)

Post by latnemele » Thu Nov 26, 2020 7:06 pm

Got it, thanks for the clarification.
It's not a big deal for me as I mainly use bookmap for smaller timeframes. If anyone needs more accurate aggregated values you can use the built in OHLC candlesticks

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