File Exchange > Graphing >    Tangent

Author:
OriginLab Technical Support
Date Added:
8/5/2015
Last Update:
12/21/2020
Downloads (90 Days):
6282
Total Ratings:
123
File Size:
276 KB
Average Rating:
File Name:
Tangent.opx
File Version:
1.50
Minimum Versions:
License:
Free
Summary:

Draw a tangent line at selected point of a data plot.

Screen Shot and Video:
Description:

Purpose:
This app draws a tangent line at selected point of a data plot in a graph. A smoothing option is available for computing the derivative for noisy data.

Installation:
Download the file Tangent.opx, and drag and drop it onto the Origin workspace. An icon will appear in the Apps Gallery window.

Operation:

  1. Click the icon to open dialog. Change dialog settings as desired and press OK. A vertical line will be added to the graph.
  2. Drag the vertical line to select a desired point on the curve. The tangent line will update as you move the vertical line.
  3. Press the triangle button at the top right of the graph to display a context menu. Select "New Output" to add tangent line at currently selected point.
    You can then move the cursor to other points on the curve to add additional tangent lines.
  4. Select "Preferences..." from the context menu to re-open the dialog to change settings.
    When dialog is open, press "?" button, or F1 to open the help file.

Note:

It is best to use this app in Origin 2019B, or higher version. For lower version than Origin 2019B, if the plot is xy-exchanged, the horizontal for selecting data point is not able to be moved vertically by draging the line itself. The way to make this line moved is to drag one of the two handles, and even dragging the handle, the line would not move with the handle together, but it would jump to the position of the handle after the dragging done.

Updates:

11/17/2015 v1.1 Supports duplicate values in x data.
8/16/2018 v1.2 Fixed bug for wrong data with multiple plots, support for Chinese version.
3/19/2019 v1.3 Support apparent tangent and xy exchanged graph
20/6/2019 v1.4 Change minimum version to Origin 2016
22/6/2020 v1.5 Fixed localization issue for Japanese

Reviews and Comments:
06/01/20221145111

05/31/2022Evin1

05/25/2022sk1lno

03/20/202215759973571

03/19/202218024322540good

03/19/2022luoyangshifanxueyuanhao

03/19/2022luoyangshifanxueyuanhao

03/19/2022luoyangshifanxueyuanhao

12/19/2021  

12/15/2021OriginLabHi yun1105,
Please tell us the details about the issue through
https://www.originlab.com/restricted/support/newticket.aspx
Thanks,
Shirley
OriginLab

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