Cosmetic graph display improvement for 5.1

[jbmalfilattre]

Currently the display of the frequency ranges (Hertz) on the X-bar of the UI in the beta version of the graph looks rather untidy. This can be confusing for users attempting to calibrate the OSD or Flap configuration.

Current Version:

Wouldn't one of these modified versions make the display look much cleaner and less confusing for the user?

Alternative 1:

Alternative 2:

If you agree, then let me know which of those two proposed versions (or maybe something completely different?) you'd prefer.

NOTE: If the images above appear as dead links, then simply refresh your browser, usually with "F5".

[jones139]

The reason it is shown as a range is that we are really displaying a histogram - the value is the sum of all the spectral powers between 4 and 5 Hz etc. The previous version used a bar chart rather than a line chart which made it clearer I think - I can't remember why we switched to a line chart - it was probably just that I failed to get a bar chart working with the library we changed to.....
So maybe the best way of making it clearer would be go make it a bar chart again?

[jbmalfilattre]

My proposal; change the line chart to a bar chart. Make the bars outside of the ROI appear in the same colour as the (greyish) graph colour itself.
Change the bars within the ROI to the same (red) colour as the line chart currently is. Change the colour of the (new) horizontal line indicating the current power threshold from red to blue (for better clarity).
Change the X-axis labelling to the "Alternative 2" in the above image.

Let me know what you think about these modifications, then I'll have a go at a PR.

[jones139]

Sounds good, yes, please try that. Regards Graham.

…

On Mon, 28 Sept 2026 at 07:57, Peter ***@***.***> wrote: *jbmalfilattre* left a comment (OpenSeizureDetector/Android_Pebble_SD#289) <#289 (comment)> My proposal; change the line chart to a bar chart. Make the bars outside of the ROI appear in the same colour as the (greyish) graph colour itself. Change the bars within the ROI to the same (red) colour as the line chart currently is. Change the colour of the (new) horizontal line indicating the current power threshold from red to blue (for better clarity). Change the X-axis labelling to the "Alternative 2" in the above image. Let me know what you think about these modifications, then I'll have a go at a PR. — Reply to this email directly, view it on GitHub <#289?email_source=notifications&email_token=AACLSYZR5RJ2PMK5X5FDD7L5RIDUNA5CNFSNUABFM5UWIORPF5TWS5BNNB2WEL2JONZXKZKDN5WW2ZLOOQXTKOBWGUYDANRRHA32M4TFMFZW63VHMNXW23LFNZ2KKZLWMVXHJLDGN5XXIZLSL5RWY2LDNM#issuecomment-5865006187>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AACLSY3CKIXSQJI3PTWK2TD5RIDUNAVCNFSNUABEKJSXA33TNF2G64TZHM2DMMJZGYZDCMJ3JFZXG5LFHM2TKOJSGU2DSMRYG2QXMAQ> . You are receiving this because you commented.Message ID: <OpenSeizureDetector/Android_Pebble_SD/issues/289/5865006187 ***@***.***>

-- Graham Jones <http://google.com/+GrahamJones> Hartlepool, UK.

[jbmalfilattre]

Hi Graham

Here is what I came up with...

When idle:

With movement:

The "Flap" graph is yet unchanged, I just wanted to hear your opinion first. If required, I can decrease the gap between the individual Y-axis bars.
Let me know what you think.

Wouldn't that be a more suitable graph for calibrating OSD?

[jones139]

Yes, I think that looks good - the current V5.1.0g has the line graph with the power threshold, and if there is a lot of movement the graph just disappears - at least with a bar graph we can tell it is full scale rather than missing. I think that to be useful we might need to change the scale too because you won't be able to see the shape of the spectrum if most of the bars are off scale?