Allow display of more data points in Serial Plotter

[kubichekster]

Describe the request

Change the number of plot values back to 500. Or make it a user selectable option

Describe the current behavior

The Arduino IDE 2.x Serial Plotter displays only 50 data values, compared to the Arduino IDE 1.x plotter, which displayed 500 values.

This is a problem because events stream by 10 times faster and are much harder to see. With 500 points we see a much clearer time history of the physical measurements we're making.

I use the Plotter a lot in my K-12 STEM workshops, and this will really have a negative impact.

Arduino IDE version

51f69f6

Operating system

All

Operating system version

Any

Additional context

Additional requests

• Serial Plotter - Set maximum dataset points #1308
• Added dropdown to Legend for dataPointThreshold arduino-serial-plotter-webapp#32 (comment)
• Added dropdown to Legend for dataPointThreshold arduino-serial-plotter-webapp#32 (comment)
• Added dropdown to Legend for dataPointThreshold arduino-serial-plotter-webapp#32 (comment)
• https://forum.arduino.cc/t/serial-plotter-very-fast-in-adruino-2-1/1123294
• https://forum.arduino.cc/t/plotter-with-more-samples-in-the-window/1034998
• https://forum.arduino.cc/t/how-can-i-change-the-amount-of-data-displayed-in-the-serial-plotter-window/1043750/1
• https://forum.arduino.cc/t/how-can-i-change-the-amount-of-data-displayed-in-the-serial-plotter-window/1043750/18
• https://forum.arduino.cc/t/serial-plotters-horizontal-scale/1014334
• https://forum.arduino.cc/t/serial-plotter-x-axis-too-limited/1172318
• https://forum.arduino.cc/t/your-reason-for-not-switching-to-the-2-x-ide/1176322/10
• https://forum.arduino.cc/t/serial-plotter-output-too-fast/1233965

Issue checklist

• I searched for previous requests in the issue tracker
• I verified the feature was still missing when using the latest nightly build
• My request contains all necessary details

[ratio-x]

urgently expected...

[IanBUK]

Export to Excel would be nice as well.

[scorbin1]

This feature is desperately needed. Plotter is almost unusable in most applications. Ability for user to adjust by code, or at least via ui control should be heavily considered!!

[fralbo]

In fact, the best would be to let us define the horizontal scale.

[InstantMuffin]

I, too, stumbled upon this.

Obviously it would be nice to have specific features like mentioned above, but I think just to have on par featureset with the former IDE it would be wise to readd display of 500 data points like in the earlier versions. It would be quite odd to have a successor that does not have or has less of a specific feature than the predecessor.
I only noticed this when trying to debug something using the serial plotter and found out that for myself 50 data points were absolutely not adequate for my specific situation.

I tried changing this line
https://github.com/arduino/arduino-serial-plotter-webapp/blob/04a460e0c21609a63c4064f561990c0128c5a0ed/src/ChartPlotter.tsx#L46
in the bundled package that is being fetched/created when building arduino-ide. The build process did not edit the file back to what it was before, however, unfortunately, it did not increase the number of data points.
Being unfamiliar with the build process, I don't know if this is in fact the wrong line of code to adapt, or if the change just doesn't make it into the final arduino-ide build for some reason.

The change in itself would seem to be rather trivial, given that and the featureset of the predecessor I would really like to see the this implemented before the final release.

[SaturdayScience]

I'm running rc9.4 on Linux Mint 21 and the plotter frustrates me. With data once per second plotter shows only 5 X-axis data sets no matter how large I make the window. At fast rate such as 100 data sets / second it shows 50. I can't seem to display 500 seat.

[FarhanKhosravi]

Hi..
yup, this is so URGENT and needed to make plotter scalable... 50 is really small!
only make two sliders to change x/y zoom manually! not a hard work, but VERY life savior.

I'm waiting for this too, hope they fix this ASAP.

[SvenRosvall]

Another vote for this enhancement.

[fralbo]

Anyone in the development team to take care about our requests?