Community Profile

# John BG

620 total contributions since 2014

MIET 36486065
MEng Telecommunication Systems
UPC ETSETB Barcelona

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calculation variable x besselj
Hi Thomas this is John BG <jgb2012@sky.com> One way to solve this equation is with the function *intersections.m* by Mr Sc...

5 days ago | 0

Question

GCHQ puzzle for IET readers October 2017, any one with same results?
Hi this is John BG <jgb2012@sky.com> The Institute of Engineering and Technology (IET <http://www.theiet.org/ www.theiet./...

9 days ago | 0 answers | 0

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Submitted

hints for IET GCHQ readers puzzle October 2017
hints for IET GCHQ readers puzzle October 2017

How do I characterize these cells by area and diameter?
Hi Tushar this is John BG <jgb2012@sky.com> NOT ALL IMAGES UPLOADED YET, EXCEEDED DAILY LIMIT. COMPLETING UPLOAD ASAP...

12 days ago | 0

Real time detect keypress
Hi Michael this is John BG jgb2012@sky.com 1. Let me show you how to use figure to capture keystrokes ...

13 days ago | 0

Override default behavior of Shift+F10
Hi Rayle this is John BG <jgb2012@sky.com> the following only captures one keystroke at a time, but as long as the figure ...

13 days ago | 0

Hi Nicia this is John BG <jgb2012@sky.com> 1. t is just a parameter, not the reference vector of the differential equat...

18 days ago | 1

how to import the output of a function displayed
Hi segun this is John BG <jgb2012@sky.com> Let be your data for instance A=randi([-1e4 1e4],5,1) 1. choose the Exc...

18 days ago | 0

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MATLAB plotting problems...
Hi David this is John BG <jgb2012@sky.com> your code doesn't plot because m is scalar while y is a vector. command plot...

18 days ago | 1

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How to use matlab to count these particles?
Hi Tushar this is John BG <jb2012@sky.com> 1.- Acquiring petri image, using green layer only, manually binarising the wh...

22 days ago | 1

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4 non linear simultaneous equations
Hi Misha this is John BG <jgb2012@sky.com> 1. define the function to solve with in for instance a separate file fu...

1 month ago | 0

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I have a question in image processing, this code shows how to add noise to the image and then retrieve it again ... The problem when retrieving the image error occurs and show the image that was retrieved in white
Hi Ahmed I have applied some changes to your code but perhaps you would like to consider using a different filter. attache...

1 month ago | 0

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Euclidean distance (ED)calculation in matlab
Hi TUSHAR MURATKAR this is John BG <jgb2012@sky.com> I have written a scaled solution with only 12 rows 1. the Eucli...

1 month ago | 0

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Generating unique random numbers less than 1 in matrix
Hi Hany Salem this is John BG <jgb2012@sky.com> 1. Initial consideration The 'shoot first and check later' approach...

1 month ago | 1

Hi Lmm3 this is John BG jgb2012@sky.com Why not simply using a switch? b = 'AGA'; switch b case {'UUU' ...

1 month ago | 1

need to use a function to calibrate the weight of a alkan.
Hi Kjetil Svihus This is John BG <jgb2012@sky.com> The function you ask for has already been implemented by Gerhard Nieuwe...

1 month ago | 0

In this question, would dig be 2 inputs, such as 91 and 99? And lim can be any number the user calls?
hi champions2015 this is John BG <jgb2012@sky.com> the following is a slight variation of what's been asked, this function...

1 month ago | 0

what is the wrong in this code?
Hi Ahmed this is John BG <jgb2012@sky.com> 1. it may be that rather than real an imaginary parts, you may consider usin...

1 month ago | 1

nanmean returns -Inf
Hi Balsip this is John BG <jgb2012@sky.com> 1. while A=[NaN NaN -12 NaN NaN NaN NaN -1 -5 -8 NaN NaN NaN NaN -20 N...

1 month ago | 0

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Can someone please provide me with the code for this plot
Hi Ajshay Verma this is John BG <jgb2012@sky.com> 1. A possible approach would be to use the common ODE tools, but, at ...

1 month ago | 1

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how to find the largest scalar in array with 2 ways?
Hi AnhThu Le this is John BG jgb2012@sky.com Let's say you have the following matrix A=randi([1 10],randi([1 5],1,1),...

1 month ago | 0

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Removing like terms in a matrix
hi there this is John BG <jgb2012@sky.com> 1. the data A = [1 2 3 4 5 6 7 8 9] B = [2 4 5 8 9] 2. w...

1 month ago | 1

how can I group pairs of numbers that share a common number? Thank you!
Hi Jonathan this is John BG jgb2012@sky.com the attached script answers your question, explanation 1. w is going t...

2 months ago | 0

How to plot Error function of complex numbers
Hi Harekrishna Mandal this is John BG <jgb2012@sky.com> Although MATLAB standard functions erf and erfc only work with rea...

2 months ago | 1

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Problems finding exact match for a string
Hi J M this is John BG <jgb2012@sky.com> From the additional information for a much larger set of info .. The GN va...

2 months ago | 1

how to make a 2 files .mat become 1?
Hi Veizal Rasyid this is John BG <jgb2012@sky.com> combining mat files into a single mat file is simple: 1. load the...

2 months ago | 0

How to Generate 100 Random points inside the figure?
Hi Nathaniel this is John BG <jgb2012@sky.com> The following script, attached test_125.m, scatters points uniformly inside...

2 months ago | 0