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# Iain

### MBDA UK Ltd

Last seen: 1 year ago Active since 2012

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Question

How to determine how much RAM is available?
I'm currently working on a tool designed to read in files and do stuff to the files, and the likelihood that it will eventually ...

1 year ago | 1 answer | 0

### 1

Storing results from a nested for loop
Well theres two ways: 1. Write the results to file as they are generated. (xlswrite & xlsread would be your friends, and you ...

6 years ago | 0

| accepted

How to create a Executable (.exe) with MatLab 2013b ?
You need the compiler toolbox. The method I use is: mcc <scriptname> -m The Matlab compiler runtimes need to be installed...

6 years ago | 0

maclaurin series code problem
abs(ea(k+1))<es in your code, ea is a scalar, and you're trying to access the k+1th element, which is the error.

6 years ago | 0

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max and min complex number
Max is calculating the absolute value, and then taking the maximum value, despite being negative. Greater than is taking the ...

6 years ago | 0

How to get a single line on an image?
Oh, I just found the perfect answer. imline.

7 years ago | 0

| accepted

Question

How to get a single line on an image?
I'm trying to make a little bit of image analysis software. I need to plot the intensity of pixels lying along a user selected l...

7 years ago | 1 answer | 0

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Question

I am trying to do an assessment of some video capture hardware and a thermal imager. I am trying to establish methods of reading...

7 years ago | 0 answers | 0

### 0

Cycle For how can i??
for i = 2:numel(x) do stuff end

8 years ago | 1

Plot in matlab, multiple plots in one figure.
x_for_z1 = matrix(matrix(:,3)==1,1); y_for_z1 = matrix(matrix(:,3)==1,2); plot(x_for_z1,y_for_z1,'r') hold on etc etc.. ...

8 years ago | 0

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Using a user defined fucntion with blockproc
What does your "myfunction" function output? It looks like it's not producing any output.

8 years ago | 0

Inf and NaN problem
Logarithms are your friends. Here's what I mean maths: log(UtiliteProba) = (UtiliteB(b,l)+UtiliteC(b,l))/T (values in the ra...

8 years ago | 1

Vector initialization (randn) with loop 'for'
The time difference is due to what gets done in the loop. randn - This checks the number of inputs (0), generates a number a...

8 years ago | 0

How to write the first line of a function?
The first line of a function should look something like this: function [a b c] = something(a, b, c) % 3 inputs, 3 outputs ...

8 years ago | 1

Query about data types and whos
Size is working properly. It is telling you that there are TWELVE characters in the string 'flights_2011'. size(flights_2011...

8 years ago | 0

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Stitching sub images to reconstruct full image
depending how you've done it.... BInew = permute(BI,[1 3 2]); BInew = reshape(BInew,16*size(BI,1),[]); ought to work.

8 years ago | 1

Not so rhetorical question: Why the common practice of writing lines of code without white space?
When it comes to making code readable, scDSI (:, theta+1) = scRadius * [ cosd(theta); sind(theta); 0.0 ]; Is not as reada...

8 years ago | 0

Problemas with "sum" function
It is a tolerancing problem. By default, matlab does sums to the 15thish significant figure. Small numbers being added to...

8 years ago | 0

Matlab Function Problem - Variable Storage
Ok, a FUNCTION is a thing like "sin", it accepts a (none/list of) input parameter(s). It outputs a (none/list of) output paramet...

8 years ago | 0

how to plot clearer angle yticklabels at whole fractions of 360° (and/or fractions of pi, for radians) in stead of decimal
You can change where the ticks go: set(axishandle,'YTick', [0 4 6 8 ...] ) You can change the labels as you like: set...

8 years ago | 0

Theres a few "rotates". flipud, fliplr, transpose/permute, imrotate...

8 years ago | 0

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Matlab code for it would be something like... : listofnumbers = [1 4 7 9]; weight = [1 2 3 4]; % weights, not frequencies....

8 years ago | 1

Force scientific notation in axes
Here's a really simple option. Change the units of the axes. Plot time, in, for example, hs, cs, ds, Ds, ms, ks ...

8 years ago | 0

Comparing two numbers by using IF in Matlab
The code is correct. The problem is that x - y is not precisely 0. The magnitude of the difference will be less than 1e-5 ...

8 years ago | 2

| accepted

I have a cellarray (100000000*2cell) ,how can I save the cell in excel more quickly ?
Here's a better idea. *Don't* save it to a text file. 100 million lines of text, of 40 bytes per line (more if nicely format...

8 years ago | 2

Is it possible to use element by element comparison between a single variable and individual matrix values?
Yes. Try these to see what makes sense for your little problem whatever it happens to be... logical_cmp_result = eye(3) ==...

8 years ago | 0

plot with different symbols
r1 = rand(1,1000); r2 = rand(1,1000); plot(1:1000,r1,'bx',1:1000,r2,'kx') Change the x to +, d, s, o for other symbols...

8 years ago | 0

Question

I have a function, which to optimise it, I am going to have to split into two separate sequences of parallel processes (using pa...

8 years ago | 0 answers | 0