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Francisco de Castro


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Last seen: 11 months ago |  Active since 2007

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Answered
Degrees of freedom in a kernel density estimation
I found a solution for my own question. The degrees of freedom can be can be estimated as the trace of the smoothing matrix. Thi...

1 year ago | 0

| accepted

Question


websave adds html to file name
Any reason why 'websave' adds a '.html' to the name of the output file? I'm downloading coronavirus data from John Hopkins Univ...

4 years ago | 2 answers | 1

2

answers

Question


Degrees of freedom in a kernel density estimation
Is there any way to estimate the degrees of freedom from a kernel density estimator? Background: I want to compare the fitting...

4 years ago | 1 answer | 0

1

answer

Answered
What happened to allfitdist ?
A bit late, perhaps, but function 'fitmethis' in matlab's file exchange does something similar to allfitdist.

5 years ago | 0

Question


Why does Jpattern option not improve execution time of ODE solver?
I have a system of ~100 ODEs. They represent interactions between species in an ecosystem. Each species interacts only with a sm...

6 years ago | 0 answers | 0

0

answers

Answered
Thresholds in ODE solvers
I found a partial (and not very elegant) solution for this, albeit only for some of the ODE solvers. 1. Write the example od...

6 years ago | 0

Answered
Is there any way to use multiple tolerances in ODE solvers?
Thanks Torsten, your suggestion may be the solution. If you put it as an separate answer I'll mark it as accepted. F

6 years ago | 0

Question


Is there any way to use multiple tolerances in ODE solvers?
I'm frequently using systems of ODEs to simulate the dynamics of ecological communities. The number of equations is large: from ...

6 years ago | 4 answers | 0

4

answers

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Heterogeneity in linear model
I'm fitting a generalized linear model. The response variable has a gamma distribution. I have 1 fixed (categorical) factor with...

7 years ago | 0 answers | 0

0

answers

Answered
Good plotting functions for food webs?
Hi Edward, Maybe too late, but I updated plotfoodweb to plot in 2D. Not arrows, just lines, but still. Hope it helps.

9 years ago | 0

Question


Is Bonferroni adjustment applied to p-values by default?
Do the MATLAB procedures that perform multiple regression (specifically GeneralizedLinearModel.stepwise) apply the Bonferroni ad...

10 years ago | 0 answers | 0

0

answers

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McKendrick - von Foerster equation
Can anybody suggest a step-by-step explanation of how to set up, in MATLAB, the McKendrick - vonFoerster equation for age-struct...

10 years ago | 0 answers | 1

0

answers

Question


non-linear fit with generalized least squares
I need to fit a non-linear model in which the data are not independent. A Generalized Least Squares approach allows this if you ...

11 years ago | 0 answers | 0

0

answers

Question


Stdev from gmdistribution.fit?
I'm using function gmdistribution.fit to fit data which is a mixture of three normal distributions with different means and diff...

11 years ago | 1 answer | 0

1

answer

Question


Compare fits in CFTOOL
Is there any way in CFTOOL (v3.3, R2012b) to plot two fits together (in the same figure)? So I can show their differences graphi...

12 years ago | 0 answers | 0

0

answers

Question


fitting implicit functions with NLINFIT
Is there any way to use implicit functions when fitting them to data with NLINFIT? Details: I need to fit a model to some data...

12 years ago | 2 answers | 0

2

answers

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Vectorization in an array of structures?
I seem to be unable of vectorize a simple calculation with the contents of an array of structures. Is this possible at all? Exam...

12 years ago | 2 answers | 0

2

answers

Question


Why deviance returned by GLMFIT is not = -2*LogLikelihood?
I'm working with GLM models using glmfit. After fitting the model I need to calculate the LogLikelihood (which is not returned d...

12 years ago | 1 answer | 0

1

answer

Answered
Multivariate GLMFIT and GLMVAL
Peter, thanks for your comment. However, to plot the predicted values of the model I need the values of each predictor to span i...

13 years ago | 0

Question


Multivariate GLMFIT and GLMVAL
I have a problem with plotting the results of a glm model with several predictors. I first fit the model with GLMFIT as: ...

13 years ago | 3 answers | 0

3

answers

Question


Thresholds in ODE solvers
Working with models of ecological communities based on diff. equations, I want to define a extinction threshold. If, during the ...

13 years ago | 2 answers | 0

2

answers