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Chart with 14 lines and 3 scales
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Topic: Chart with 14 lines and 3 scales (Read 981 times)
Nera
Full Member
Posts: 103
Chart with 14 lines and 3 scales
«
on:
February 18, 2020, 05:31:33 pm »
Good afternoon people.
I need to make a chart with 14 lines and 3 scales. Which component do you indicate for this function?
I would like it to be a native component, but if not, indicate an opensource component.
Thanks
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Handoko
Hero Member
Posts: 5154
My goal: build my own game engine using Lazarus
Re: Chart with 14 lines and 3 scales
«
Reply #1 on:
February 18, 2020, 05:41:27 pm »
Have you tried TAChart?
https://wiki.lazarus.freepascal.org/TAChart
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wp
Hero Member
Posts: 11916
Re: Chart with 14 lines and 3 scales
«
Reply #2 on:
February 18, 2020, 06:17:20 pm »
If you never worked with TAChart before you should look at the Getting started tutorial:
https://wiki.lazarus.freepascal.org/TAChart_Tutorial:_Getting_started
"14 lines": A "series" in TAChart is a presentation of a variety of (x,y) pairs. A TLineSeries connects the data points by straight line segments. So you need to add 14 series to the chart. But there are also cubic spline and b-splite series which can draw smooth curves between the data points.
Alternatively, if data points on all series share the same x values, you can use a single series and adjust it such that it allows for 14 y values for each x value.
"3 scales": You can add two more y axes so that there are 3 y axes, in total. You also need so-called chart transformations which are responsible to accomplish the mapping of the 3 y data scales onto a common graph scale. The procedure how to set this up is explained in two tutorials:
https://wiki.lazarus.freepascal.org/TAChart_Tutorial:_Dual_y_axis,_Legend
https://wiki.lazarus.freepascal.org/TAChart_Tutorial:_Multiple_Panes_in_one_Chart
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Chart with 14 lines and 3 scales
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