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  how to modify someone Label in many Labels?
Posted by Kun on Jan-22-2015 09:29
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      There are 540 Labels on xAxis, but the 270th Label is special, I want to modify it`s format. Like the pictrue:
      // code
     DoubleArray timeStamps1 = r.getDateSeries(270, Chart::chartTime(2011, 1, 1, 9, 15), 30);
DoubleArray timeStamps2 = r.getDateSeries(270, Chart::chartTime(2011, 1, 1, 13, 0, 30), 30);
double time[540];
memcpy(time, timeStamps1.data, sizeof(double)*timeStamps1.len);
memcpy(time+270, timeStamps2.data, sizeof(double)*timeStamps2.len);

DoubleArray timeStamps(time, 541);

c->xAxis()->setLabels(timeStamps, "{value|hh:nn}");
c->xAxis()->setLabelStep(30);
QQ截图20150122092433.png
QQ截图20150122092519.png

  Re: how to modify someone Label in many Labels?
Posted by Peter Kwan on Jan-23-2015 00:58
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Hi Kun,

You can use Axis.addLabel. For example:

//add all the labels
c->xAxis()->setLabels(timeStamps, "{value|hh:nn}");

//modify the 270th label (index = 269) to the special text "ABC"
c->xAxis()->addLabel(269, "ABC");

Hope this can help.

Regards
Peter Kwan

  Re: how to modify someone Label in many Labels?
Posted by Kun on Jan-23-2015 09:14
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Thank you, Peter Kwan!

It works. thank you!

Regards
Kun