Convert graph to equatio (software)

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Discussion Overview

The discussion revolves around the inquiry of software tools that can convert a graph into an equation, specifically focusing on xy graphs. Participants explore methods for generating accurate equations from graphical data, touching on statistical techniques and software options.

Discussion Character

  • Exploratory, Technical explanation, Homework-related

Main Points Raised

  • One participant asks for software that can convert an xy graph into an equation for more precise data representation.
  • Another participant suggests that the problem is generally intractable and recommends using regression techniques available in statistics software like MATLAB or R.
  • A participant questions whether having a set of data that can be graphed allows for the generation of an equation from that data.
  • It is mentioned that if xy data is available, a function can be fitted to it, with MATLAB's Curve Fitting Toolbox being highlighted as a useful tool.
  • Alternatives to MATLAB are discussed, with Microsoft Excel being suggested for basic regressions and curve fitting.
  • A follow-up question is raised about how to access the regression function in Microsoft Excel after plotting a graph.
  • A participant notes that Excel has a built-in function for obtaining weights for a fitted basis function, though they do not recall the specific name of the function.

Areas of Agreement / Disagreement

Participants generally agree on the utility of regression techniques for fitting equations to data, but there is no consensus on a specific software solution or method, and some questions remain unresolved.

Contextual Notes

Limitations include the lack of specific details on the types of equations that can be generated, the assumptions underlying the regression methods, and the exact functionalities of the software mentioned.

Who May Find This Useful

This discussion may be useful for individuals seeking to convert graphical data into mathematical equations, particularly those interested in statistical analysis and software tools for data fitting.

cindylky
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Hi. I'm new to this forum. I would like to ask is there any software that can convert graph to equation. My graph is in xy graph. I need to create a new accurate equation to make data more precisely. Appreciate to anyone who can help.
 
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That's an intractable problem in general. You might try performing regression; any statistics software will do it for you (e.g. MATLAB, R).
 
if i have a set of data that able to draw graph, can i apply the data to generate the equation?
 
If you have the xy data you can fit a function to it. If you have MATLAB I'd use the Curve Fitting Toolbox, cftool. It offers a nice GUI showing the data set and the fit, and offers several basis functions to choose from.
 
If you don't have matlab, Microsoft Excel can also do some basic regressions/curve fitting.
 
Andre said:
If you don't have matlab, Microsoft Excel can also do some basic regressions/curve fitting.

Btw, how to call that function out from microsoft excel after ploting the graph?
 
There's a built-in Excel function that will give you the weights for a fitted basis function; I don't remember what it is.
 

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