Steema Central

Posted: **Mon Oct 18, 2010 10:33 am**

Hi Everyone.

This is my first time on the support forum so sorry if i have missed some information.

Im trying to display date time data on a graph and i want it to be quick so I add data using arrays and date time as milliseconds since epoch:

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                        rs = conn.QueryDB("Select millisecondssinceepoch(thedatetime), chan257"
                        + "from data10hz "
                        + "where thedate = to_date('" + selectedDate +  "','YYYY-MM-DD') and resim = '0'"
                        + "order by thedatetime");

load the data into arrays:

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Line1.add(xarray1, yarray1);

The graph displays fine but the x axis is obviously a number.

So i read the tutorial and the tried the following code with no success:

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            tChart1.getAxes().getBottom().isDateTime();
            tChart1.getAxes().getBottom().getLabels().setDateTimeFormat("dd-MM-yyyy hh:mm:ss");

then i use the editor and by double clicking on one of the series and then selecting DateTime in General the problem is fixed. (Apart from the fact i need 24 hour time)

: teechart.JPG (101.14 KiB) Viewed 7456 times

Please help.

Asim

Posted: **Tue Oct 19, 2010 10:12 am**

Hi Asim,

Note that isDateTime function returns a boolean. It is used to retrieve the information, not to set it.
To set it, as you've seen through the editor, you have to set the series' XValues to be DateTime. For example:

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tChart1.getSeries(0).getXValues().setDateTime(true);

I hope it helps.

Posted: **Tue Oct 19, 2010 12:32 pm**

Perfect.

Thanks

Posted: **Tue Oct 19, 2010 1:07 pm**

Hi Asim,

You're welcome!

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