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Michael


Con actividad desde 2011

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Estadística

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Generate random numbers with custom PDF
Hi, as it may become clear I'm fairly weak on probability distributions I want to generate a set of random numbers between 0 ...

más de 12 años hace | 4 respuestas | 2

4

respuestas

Pregunta


imshow / pcolor ... inconsistent plotting
Hi Just asking to confirm something as I have never noticed this before and it's confusing me a bit. I'll use a simple exampl...

más de 12 años hace | 1 respuesta | 0

1

respuesta

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imshow - plotting a circular image, how to make corners white?
Hi I have a circular image but it's stored as a grayscale matrix, ie. square. When I use "imshow" with the jet colormap it au...

más de 12 años hace | 2 respuestas | 0

2

respuestas

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how to preallocate large logical array
Hi I'm trying to pre-allocate a huge logical matrix but I can't work out how to do it without creating a normal matrix then c...

más de 12 años hace | 3 respuestas | 3

3

respuestas

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Parfor error?
------------------------------------------------------------------------ Segmentation violation detected at Mon...

casi 13 años hace | 1 respuesta | 0

1

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how to label lines on a graph
The general method would be using the legend function, to which you give a vector of the plot object handles and a series of cor...

casi 13 años hace | 6

Pregunta


Problem with surf / pcolor / image
Hi I have a matrix and I want a pcolor-style plot where each square (and therefore its colour) corresponds to an element. Cur...

casi 13 años hace | 2 respuestas | 0

2

respuestas

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having one "for" loop instead of two
From the comments I think you want the surface c = a + b Just use a nested loop c = zeros(11); for a = 0:10 fo...

casi 13 años hace | 0

Respondida
converting a group of .fig files into .pdf
Are the files named according to some nice rule? eg. 1.fig, 2.fig, ... maybe you can write a script based on openfig / print (th...

casi 13 años hace | 0

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Respondida
Linear Regression - more weight on specific Bins of data
lsqnonlin may be a good place to start, rather than giving it your model function and a starting point (eg. lsqcurvefit), you gi...

casi 13 años hace | 0

Respondida
pcolor command
try pcolor(imrotate(A,90)) This should move the top left corner to the bottom left.

casi 13 años hace | 0

Respondida
Optimization gives only small changes in each step, Why and how to solve it?
Which MATLAB function are you using? Certain ones allow you to input parameters that relate to how far you anticipate the minimu...

casi 13 años hace | 0

Pregunta


parfor - how do I "slice" a variable? Can I?
I have a parfor loop that takes one row of a matrix and uses it for calculations. I therefore am getting errors since I am ca...

casi 13 años hace | 1 respuesta | 0

1

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How to fully use the CPU of my PC?
100% CPU load is not a test that your code is optimised! It is just a sign that the hardware bottleneck may be in your processor...

casi 13 años hace | 1

Pregunta


one line takes ages, but is it possible to optimise any more?
Need a little help, I'm running this code a lot and small differences lead to big time savings. I have a large matrix (512x512)...

casi 13 años hace | 3 respuestas | 0

3

respuestas

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Looping a function m-file, figures not closing
Thanks, both comments helped.

alrededor de 13 años hace | 0

Pregunta


Looping a function m-file, figures not closing
Hi, I'm running a script which repeatedly calls a function I wrote (using a for loop). In this function there is a command to...

alrededor de 13 años hace | 3 respuestas | 0

3

respuestas

Respondida
Importing .xyz Data Files
I think the first line of your text file should be in the same format as the data; in your example the first row is a single zer...

alrededor de 13 años hace | 1

| aceptada

Respondida
non linear regression of a 3D line
You need a model to fit to the data, if you can come up with one (for example, f(x,y,z; param1, param2 ...) = 0), and have a sui...

alrededor de 13 años hace | 0