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  Scaling ration problem
Posted by Norm on Feb-26-2018 15:19
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Hi,

I have a problem with scale ... I would like set a width for my realtime chart to 1000
But if I set a width over 400, a ratio scale is bad ...

What I have to set to force width for each entry to 1 pixel?

Here an image attached display that I want :
Chart.jpg

  Re: Scaling ration problem
Posted by Peter Kwan on Feb-26-2018 22:32
Hi Norm,

You can set the x-axis scale. For example, if you have 4 data points per second, and if the chart contains 1000 pixels/points, the x-axis range should be 1000 / 4 = 250 seconds.

For example, in the original VB6 realtime code sample chart, you can configure the x-axis scale to be like:

' The x-axis is 250 seconds long
Call c.xAxis().setDateScale(lastTime - 250, lastTime)

Hope this can help.

Regards
Peter Kwan

  Re: Scaling ratio problem
Posted by Norm on Feb-27-2018 22:05
Thanks Petern,

Work fine !