Update a annotation after a color line has been dragged

TeeChart VCL for Borland/CodeGear/Embarcadero RAD Studio, Delphi and C++ Builder.
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EdDressel
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Update a annotation after a color line has been dragged

Post by EdDressel » Fri Feb 01, 2019 1:13 am

I need to update the content of an annotation with the Y value of a series after a color line has been moved. The color line is associated with the bottom (X) axis.

I can get the X Value fairly simple:

srsRegUsers.CalcPosValue(crttlLine.Value)

But how do I get the Y value for the color line's location?

Thank you,

Ed Dressel
Thanks,

Ed Dressel

EdDressel
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Re: Update a annotation after a color line has been dragged

Post by EdDressel » Thu Feb 07, 2019 3:50 pm

I have attached a demo of what I am needing--I don't know what to use for the Y-value.
Attachments
Color Line Annotation.zip
(1.6 KiB) Downloaded 44 times
Thanks,

Ed Dressel

Yeray
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Re: Update a annotation after a color line has been dragged

Post by Yeray » Mon Feb 11, 2019 8:51 am

Hello,

You should calculate the Line Interpolation as shown in the example here.
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