|
| Limiting a Chart with a fixed number of data points |
| Iniciado por guest, 29,ago. 2015 02:46 - 2 respuestas |
| |
| | | |
|
| |
| Publicado el 29,agosto 2015 - 02:46 |
Hello:
I have a Chart showing new data every second, but I want to show the last 50 data values, so basically once I get the limit, every time I add a new value, I should delete the first one, but of course shift left the whole series to accommodate the new value.
So far, all examples I checked are adding values indefinitely, and the chart gets very ugly.
Any idea?
Thanks
Michael |
| |
| |
| | | |
|
| | |
| |
| Publicado el 29,agosto 2015 - 03:19 |
I was able to do it, but using an array with the dimension of the max. number of data points I want, and then for each new value I have to shift all data down (data in position 2 copy into 1, pos 3 to 2, etc.) but this is kind of slow for large arrays....
I'm wondering if there is a better way of doing this...
Regards;
Michael |
| |
| |
| | | |
|
| | |
| |
| Publicado el 29,agosto 2015 - 13:19 |
Hi Michael,
an array is a good solution, but:
- instead of shifting each value one step, just delete line one (arraydelete) and add line 50
- block the refresh of the window while you are doing that
it should be much faster
Best regards |
| |
| |
| | | |
|
| | | | |
| | |
|