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Laurence hutton-smith


University of Oxford

Active since 2015

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Smoothing noisy 2D data
I have a dataset (attached as data.mat), it contains a matrix z with x and y coordinates, see it plotted below. As you can se...

nästan 7 år ago | 1 answer | 0

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answer

Question


How can I use bootstrapping with different sized data sets?
I wish to use MATLAB's bootstrapping functionality, however my data sets are of different sizes. See the code below as an exampl...

nästan 9 år ago | 0 answers | 0

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answers

Question


How do you force bootci to keep a constant bootstrapping sample size?
Consider the code below: function [ci,bootstat] = bootstrap_test () % simulate data y = normrnd(10,1,5,1); ...

nästan 9 år ago | 0 answers | 0

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answers

Question


How to correctly use lsqnonlin in conjunction with nlparci and nlpredci, by fitting to a weighted function and utilising the jacobian and residue output from lsqnonlin.
I have three (x,y) experimental data sets, representing data at three geographical locations, call them A [x_A, y_A] of size n_A...

nästan 9 år ago | 0 answers | 1

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Question


How do you control the length/width of error bar end points?
The below image was generated using 'errorbar(x,y,y_SD'. As you see the size of the end of the error bars varies seemingly ar...

ungefär 9 år ago | 0 answers | 0

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Question


How can you nicely format box plots spread unevenly across the x axis?
Can anyone help me format this plot of several box plots in a more aesthetically pleasing way? What is going on near the origin ...

ungefär 9 år ago | 1 answer | 0

1

answer

Question


How to force FMINCON to explore a certain range
I am attempting to get fmincon to fit a solution of an ODE to experimental data, based upon a two parameters x and y, where x li...

ungefär 9 år ago | 1 answer | 0

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answer

Question


How fit a parameterised ode solution to experimental data
I have a model, a system of Odes, defined by a set of parameters. I also have a number of raw experimental data sets. I want to ...

ungefär 9 år ago | 2 answers | 0

2

answers

Question


How to set 'shading' to 'interp' on a specific plot within a figure
I am trying to create a figure with multiple types of plots within it, I have a surf plot in the figure which I would like to ap...

mer än 9 år ago | 1 answer | 0

1

answer

Question


How can you use coneplot to plot a single cone in a specific direction?
I am having trouble understanding the syntax of coneplot, I would like to use it to plot a single cone, in a specific direction....

mer än 9 år ago | 2 answers | 0

2

answers

Question


How do you fix this polygon glitch generated by fill3?
In the pictures below you can see blue rectangles plotted using fill3. You can see that when the data is plotted as part of the ...

mer än 9 år ago | 0 answers | 0

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answers

Question


Using csaps (or similar) to create a 3D smoothing spline
I have a series of 3D points and am looking to create any sort of smoothing spline, I was hoping to use scaps, but it only seems...

mer än 9 år ago | 2 answers | 0

2

answers

Question


How do you plot a 3D circle segment?
It seems very straightforward to plot 3D polygons using fill3, however instead of a polygon is there a way to plot a circle segm...

mer än 9 år ago | 2 answers | 0

2

answers

Question


Can fmincon output all the considered 'x' values for minimisation of the function f(x)?
I am currently using fmincon to minimise a function f(x), I was hoping there would be a way I could, along with the value of x t...

mer än 9 år ago | 2 answers | 0

2

answers

Question


How do you fit a curve through 3D points, using splines, constrained within a volume.
Suppose I have an array of points in 3space, [r1; r2; ... ; rn] where ri = [xi yi zi] are it's coordinates. I...

mer än 9 år ago | 2 answers | 3

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answers