Write a Equation in Origin to Fit Data

This video demonstrates "How to write a equation in origin, fit the data and calculate the parameters?". In the present tutorial, i have taken the experimental data as variation of dc conductivity with temperature i.e., Arrhenius diagram to calculate the activation energy.

[@anasmoustafa7286]

Woooow, what a great explanation. I struggled a lot to do my fitting, until I found your video. Thanks man .. keep it up.

[@physicsdoneright]

Glad it helped!

[@pollabkonwar1986]

I got one modified Gompertz equation for calculation of Minimum inhibitory concentration of bacteria which is 𝑓(𝑦)=𝐴+𝐶ⅇ^(−ⅇ^𝐵(𝑥−𝑀) ), Do you have any suggestion how to fit this equation in origin, Reference of given equation is: Determining the Minimum Inhibitory Concentration (MIC) of Different Antibiotics Against a Drug-Resistant Bacteria

[@mohammadalinazari1703]

it is an amazing explanation, please explain how to fit experimental data with a model, for example, fitting of Friedman method with the TGA curve in the Isoconversional method for the calculation of Activation energy and pre-exponential factor

[@physicsdoneright]

Okay. Let me go through the literature and I will make a video on it.

[@abdullahhussein6568]

Could you please help me to do a fitting line please? I have tried to do it but still have a problem

[@abiyyukenichi1250]

Thank you sir

[@gongotreephukan7169]

I am facing a problem in fitting the equation H(T)=H(0)[1-T/Tb]^0.5. Here T and H(T) are known and I need to calculate Tb. Every time I fit, I get the value as 1. help me out.

[@physicsdoneright]

Thank you for your question. I would suggest that 1. Keep notations one character 2. Simulate the curve using initial value 3. Make sure to use brackets. This is a very easy equation and if you do not succeed still, mail me the data and i will take a look

[@johncarter40101]

Hi, I need a little help. I have a data point value of theta vs time and the resultant graph is periodic in nature (from experiment) But, I want to find an equation approximately representing that graph. So , my question is can I get an equation of graph in the software if I have data values ? Please assist me . Thank you

[@physicsdoneright]

Sure, you can fit the data with a periodic function or at least Fourier series or a polynomial series. Mail me the data in Excel with clear specifications through email around Wednesday of next week. I will do it.

[@Snowdropoppl]

why you have taken the value 0.4343 and 8.314 in the main functipon. kindly reply. can we use the same method to determine diode parameters?

[@physicsdoneright]

These are conversion factor for universal gas constant and conversion from log to ln.

[@nallurisaikusumsarayu3974]

Sir, How do we fit complex numbers into the data, I am trying to fit this Debye equation E~ = E∞ + (deltaE1/(1+jwT1))+(deltaE2/(1+jwT2))+(deltaE3/(1+jwT3)) Here j is an imaginary number, (a+jb), please tell me how do I fit this j into the origin, sir.

[@physicsdoneright]

For a complex function you need to find the real part of the complex function and also the imaginary part. You can fit them separately

[@deepayadav1562]

Hello sir I am finding problem in fitting birch murnaghan third order equation in origin in pressure volume data. Problem is that when I fit data taking pressure on x-axis and volume on y-axis the fitting does not converge but in vice versa situation that is - volume on x-axis and pressure on y- y-axis fitting runs finely. But i need it reversly

[@physicsdoneright]

This is a straight mathematical expression. Please put the code in "expression" format. Note: put brackets properly. If possible kindly post your code. Let me check.

[@deepayadav1562]

Thanks a lot sir for your reply.. Now the problem has been solved using different software

[@atmanemanou4087]

thanks

[@physicsdoneright]

You're welcome!

[@Blessed-Land-Explorer]

Hello Sir.. Can i have your email Id