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Analytical model with all physical parameters = 1
![image](https://user-images.githubusercontent.com/55796835/110562821-81ca1680-814a-11eb-9d6f-eb8cf634a649.png)
State data X was generated by a nu…
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Imported from SourceForge on 2024-07-07 09:34:13
Created by **[billingd](https://sourceforge.net/u/billingd/)** on 2018-08-25 02:21:30
Original: https://sourceforge.net/p/maxima/bugs/3461
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rtoy updated
2 months ago
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**Describe the bug 🐞**
If an equation has a constant and a variable, both with symbolic units, it throws an error.
**Expected behavior**
There shouldn't be an error if the units are correct.
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Rotating 1D shallow-water inviscid dynamics over a flat bottom are:
```
∂u/∂t + u ∂u/∂x - f v = - g ∂h/∂x
∂v/∂t + u ∂v/∂x + f u = 0
∂h/∂t + ∂(u h)/∂x = 0
```
We can rewrite the above in c…
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I found your code interesting, as I also write python curve fitting code. I saw in your code a comment about implementing RANSAC yourself, and after investigation I found the following scipy cookbook…
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I am writing an extension to a simple macroeconomics-SIR model by Eichenbaum, Rebelo, Trabandt. My aim is to use nonlinear method to simulate it. This requires first order solution. I got the steady-s…
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related issue: covariance shrinkage, and possible other non-model penalization
PRs, current code in statsmodels
- discrete fit_regularized
- elastic net fit_regularized, GLM, OLS/WLS, minimal R…
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Trying to obtain a parameter that doesn't exist gives error: `ERROR: ArgumentError: invalid index: nothing of type Nothing`, see MWE below.
Would be nice to throw an error that the parameter does n…
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Hello!
I am trying to replicate the Phoenix Drone in the current version of PX4 firmware, by modifying the existing quad-tailsitter with control surfaces (elevons) (removed 2 motors). In hover, I a…
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```
Zero-dimensional reactor library is very useful for simple calculations. Since
these reactors do not accept the calculation of steady-state directly you must
integrate in time until to consider …