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Seasoned ⭐️⭐️
Kubota Mami
Seasoned ⭐️⭐️
August 25, 2026
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【Charts】Option to draw a horizontal line from the last value up to NOW

Related products:Charts
  • August 25, 2026
  • 2 replies
  • 27 views

Hi team, 

I'd like to submit a feature request. 

Request 

In Charts, a line is only drawn up to the point where a value is registered in the time series. I'd like an option to draw a horizontal line from the last value up to the current time (NOW). 

This is especially an issue in calculations. When a formula uses multiple time series that are registered in CDF at different times, the series that ends earlier is plotted only up to its last value, so the calculation result is cut off there. I'd like to avoid this. 

Example

Given two time series Ts_long (up to today) and Ts_short (up to 2025/04/01), using them as calculation sources pulls the output toward the Ts_short time axis, so nothing is displayed after 2025/04/01.

Reference 

テスト Copy（工務 久保田） | Cognite Data Fusion

Cognite Hub

    2 replies

    Shun Takase
    MVP ⭐️⭐️⭐️⭐️⭐️
    Shun Takase
    MVP ⭐️⭐️⭐️⭐️⭐️
    August 25, 2026

    I’d definitely like to see this feature added as well.

    This might not quite meet ​@Kubota Mami san request, but if you want to pad the data with zeros from the last value to the current time, you could try the following method:

    ①: Set an appropriate granularity and “0” in the “constant value” function under “signal generator.”

    ②: Connect the time series you want to pad, the setting from step ①, and the output to the “Union” function in the “Operators” section

    This will ensure that intervals where time series data is missing on one side are padded with zeros. (I’ve attached a screenshot for reference.)
     

    I also considered a method using the last value, but I couldn’t come up with a good idea…

    I hope this is helpful in some way.

      K
      Seasoned ⭐️⭐️
      Kubota MamiAuthor
      Seasoned ⭐️⭐️
      August 27, 2026

      ​@Shun Takase san,
       

      Thank you so much for taking the time to share such a detailed suggestion — and for even attaching a screenshot, which was really helpful! I wasn't aware of the zero-padding method, so I genuinely learned something new.

      Let me just add a small clarification. What I'm hoping to achieve is a little different: rather than padding with zeros, I'd like to hold the last value and extend it horizontally up to the current time (NOW).

      With zero-padding, when the series is used in a calculation the result gets pulled toward 0, so the output ends up far from the actual value — and that's the part I'd like to avoid. Ideally, I'd like to keep the most recent value and extend the line from there.

      To Cogntie  team,

      If you happen to know a good way to achieve a "last value hold," I'd be very grateful if you could share it. Thank you as always for your kind help and support!

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