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Author:
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Cran Chu
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Date Added:
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3/25/2006
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Downloads:
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2343
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Last Update:
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3/25/2006
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Total Ratings: |
7
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File Size: |
146030 Bytes
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Average Rating: |
 
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File Name:
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Tafel.opk
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Created Using:
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Origin 7.5
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File Version:
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1.0
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Working Versions:
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7.5
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License:
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Free
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Summary: |
Draw two tangents for estimating the Tafel Extrapolation in a graph curve. |
Description: |
A. Requirements
Origin 7.5 SR0 or higher.
B. Installation
Run Tafel.opk by double-clicking the file or drag-and-drop it to Origin interface. Setup will create the 3-buttons Tafel toolbar. The demonstrated GIF file Tafel.gif and Sample OPJ file Tafel.opj also are including in this pack.
C. Operation
Left button [Tangent1]:
Start Data Reader tool to get first coordinate of a given curve. Press Enter or double-click on a point to plot Tangent 1 (Magenta color) to the curve at that point. The formula of Tangent 1 is shown in a text label (Magenta color) at the top-left of the graph.
Middle button [Tangent2]:
Also use the Data Reader tool to get second coordinate of a given curve. Press Enter or double-click on another point to plot Tangent 2 (Cyan color) to the curve at that point. The formula of Tangent 2 is shown in a text label (Cyan color) at the top-right of the graph.
Right button [Intersection]:
After the selection of two tangents is well done, single-click this button, and therefore the intersection of two tangents will be estimated. The coordinate of Intersection is shown in a text label (Yellow and Green color) at the bottom of the graph.
D. Programming Note
Curve_derivative function in Origin C language has a smoothness parameter that affects the calculated derivatives. This tool uses Origin 7.5 default value for that parameter BSPLN_OFF. If your tangents appear to be wrong, you could adjust the smoothness parameter in the file Tafel.c. For details, please look for Curve_derivative in Origin Programming Help System. (Located on Programming \ Origin C Language Reference \ Global Functions \ Analysis \ Curve_derivative.
E. Contact the Author
It is my first program design in my life for academic application. I study in PhD of Materials Engineering in Taiwan at present. I feel so happy when I finished this program. Please email any questions, suggestions or bug reports to me if the program is not satisfied or need to be modified, thanks. |
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Screen Shot: |
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Reviews: |
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Rated by: mazdak86
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Date: (6/14/2012 4:58:20 AM)
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Hi,
thanks for your program. However, when I try to select the points by double clicking or by enter bottom, the tangent line does not appear and by trying to enter the second tangent , the information of the first one is discarded. Consequently, at the end there is neither tangential lines nor their intersection. can you help pleas?
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Rated by: amal.chem
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Date: (6/22/2010 12:02:59 PM)
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thank you very much
that agood method and A VERY USEFUL TOOL
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Rated by: Javier Quinones
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Date: (4/9/2010 7:52:05 AM)
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Rated by: KARTHIK KUMAR
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Date: (4/23/2006 3:57:32 AM)
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A VERY USEFUL TOOL
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Rated by: Cran Chu
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Date: (3/26/2006 2:55:44 PM)
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Thanks, I'm so happy that you like it. This program is base on tangent.c by you made (I think so). You're too great for sharing a lot of useful tool, thank you again. ^O^
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Rated by: Cran Chu
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Date: (3/26/2006 2:25:58 PM)
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Thanks, I'm so happy that you like it. This program is base on tangent.c by you made (I think so). You're too great for sharing a lot of useful tool, thank you again. ^O^
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Rated by: Mike Buess
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Date: (3/26/2006 11:38:59 AM)
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Haven't tried the tool yet but I really like the screen shot. Excellent use of animation!
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