Reducing time window

[JayMcG]

Hi! I've created a graph to show my solar production for today vs yesterday. The graph is set to show the current_day, however, this isn't really practical as there is a lot of dead space - when the sun is down...

How would I only show 5am to 6pm and remove this dead space?

Thanks in advance for the assistance!

type: custom:plotly-graph
hours_to_show: current_day
entities:
  - entity: sensor.pv_power
    show_value: true
    fill: tozeroy
    name: Solar Power
    line:
      width: 1
  - entity: sensor.pv_power
    name: Yesterday
    time_offset: 1d
    line:
      width: 1
      color: grey
    opacity: 0.2
  - entity: ''
    name: Now
    yaxis: y9
    showlegend: false
    line:
      width: 1
      dash: dot
      color: deepskyblue
    x: $ex [Date.now(), Date.now()]
    'y':
      - 0
      - 1
defaults:
  yaxes:
    fixedrange: true
config:
  scrollZoom: true
  displayModeBar: false
layout:
  yaxis:
    range:
      - 0
      - 5000

[dbuezas]

Interesting use case, you'll have to write some JavaScript for that.
The original idea behind "current_day" was done like that. You can change the math a bit and achieve that you need.
Basically you need to compute the the offset with respect to the present, so that the result shows the right section of the day.
Here's the example: #220 (comment)

Let me know if you need help with that

[JayMcG]

Hi David,

Thanks for pointing me in the right direction!

I made adjustments to the time window and am happy with the result.

hours_to_show: 13
time_offset: |-
  $ex {
    const ms_to_show = get('hours_to_show') * 60 * 60 * 1000;
    const now_utc = Date.now() - new Date().getTimezoneOffset() * 60 * 1500;
    return ms_to_show - now_utc % ms_to_show + 'ms'
  }

[dbuezas]

Very cool!
Thanks for posting the working code and examples for the next person?

[dbuezas]

Oh, the math is a bit wrong: leave the now_utc as it was and add 5 * 60 * 1000 (5 hours in ms) to what is returned.
Otherwise your plot will break when the offset changes (e.g winter time or for people that live in a different time zone)

[JayMcG]

Ok, my solution hasn't worked. The entire graph shifts at night showing meaning I can't see any data.