[Solved] TChart and Date in X Axis
lazarus / 55-TAChart

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berghem · 2022-02-23 20:39

Hi all

in my app I  collect a lot od data from my temperature probe and I
have to put the value in Y axis and I want put the date in X asset.
I collect data every 60 seconds from a lot days (circa 15 days) and I
wont put the date one time per day.
I saw TDateTimeIntevalChartSource but doesn't work I use this commad
Myseries.add(value, DatetoStr(Now)

Can you help me?

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wp · 2022-02-23 21:50

Quote from: berghem on February 23, 2022, 09:39:07 pmI saw
TDateTimeIntevalChartSource but doesn't work I use this commad
Myseries.add(value, DatetoStr(Now)
MySeries.Add does not store the date/time of the temperature
measurement as X (which is taken as the index of the data point). You
should use AddXY(x, y, ...) instead:
Code: Pascal  [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i
Myseries.AddXY(Now(), Temperature);
In the attachment you find a tested demo project with lots of
comments.

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berghem · 2022-02-24 19:59

Thanks work well!