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michael


BGU

Last seen: 19 days ago Active since 2013

System Engineer / Solution architect

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Question


time analysis of data
Hi, I have following text file id, start_time, stop_time, value 1 XXX1 YYY1 13 9 XXX2 YYY2 65 7 XXX3 YYY3 82 1 XXX4 YY...

1 month ago | 1 answer | 0

1

answer

Question


working with times - unclear receiving values
Hi, I'm using Matlab R14SP3. I'm using datenum and datestr functions to perform my data analysis based on time. startTime=dat...

2 months ago | 0 answers | 0

0

answers

Question


improve for loop performance
Hi, I have a for loop runing on all values and takes into acount previous value for i=2:length(a) a(i)=some_function(inpu...

3 months ago | 1 answer | 0

1

answer

Question


Matlab does not recognizes function
Hi, I have a test.m file located in directory temp. This file calls functions named test1 (located in test1.m) test2 (located i...

4 months ago | 0 answers | 0

0

answers

Question


multiplication of matrix with long data
Hi, I have a long data (200K+ samples) from which a location vector L (3x1) and a matrix T (euler matrix 3x3) is generated and ...

5 months ago | 1 answer | 0

1

answer

Question


geodetic2aer elevation and range calculation
Hi, I'd like to calculate an elevation and a range from a known point on earth to a plane flying at distanse 200Km. Our calc...

5 months ago | 0 answers | 0

0

answers

Question


string text manipulation - adding data based on previous data in the string
Hi, I have a string (char array) looking as follows: Time,<Message_CMD>element1,<other_meesage>elemenX,<Message_CMD>element2,<...

6 months ago | 3 answers | 0

3

answers

Question


textscan don't read file correctly
Hi, I have preaty old MATLAB version (R14 SP3) I have 2 files which has to be imported: column headers and data (output of som...

11 months ago | 1 answer | 0

1

answer

Question


add value to cell array
Hello, I need to add some values to cell array based on conditions. It can be that on some condition, the value shall be not be...

11 months ago | 2 answers | 0

2

answers

Question


matlab figure turns to gray
Hi, I have pretty old matlab (R14 SP3). When I perform the plots on specific case, the figure changes to grey and all the data ...

11 months ago | 1 answer | 0

1

answer

Question


textscan: strings and variables
Hi, I have some csv file which contains numbers and strings (example below) The column headers are in seperate file from t...

12 months ago | 1 answer | 0

1

answer

Question


quantaize data and build an histogram
Hello, I have a 3D data (X,Y,Z). Where X is between 0 to 360, Y is between 0 to 180 and Z is between -100 to + 100. I'd like t...

1 year ago | 0 answers | 0

0

answers

Question


y axis values - change the display
Hi, I have values on y axis which ranges from 0 to 160000. The value for 80000 (for example) is displayed as 8 (*10^4) How c...

1 year ago | 1 answer | 0

1

answer

Solved


The Piggy Bank Problem
Given a cylindrical piggy bank with radius g and height y, return the bank's volume. [ g is first input argument.] Bonus though...

1 year ago

Question


shifting image up by known number of pixels
Hi, I have an image of 85*360*3. If I show it with imagesc, the Y axes will be between 0 to 85. I'd like to shift the whole i...

1 year ago | 1 answer | 0

1

answer

Question


calculate the difference on the antenna azimuth
Hi, I need to calculate the difference of 2 azimuths (lets say analytical and real azimuth). There is no issue if both are p...

1 year ago | 1 answer | 0

1

answer

Question


select data from plot and update other plot
Hi, I have some challange: I'm using preaaty old version of Matlab - R14 SP3. I have some waw data which consists of some v...

1 year ago | 1 answer | 0

1

answer

Question


using area function - drawing below 0 of y axes
Hi, I have some graph. I'd like to plot an area (the orange one). I'm using area function for positive values. how can I use it...

1 year ago | 2 answers | 0

2

answers

Question


Satellite toolbox: GPS signal generation and SDR
Hi, Just noticed that in the new version of matlab there is a new toolbox for satellite commnucation which contains an option t...

1 year ago | 1 answer | 0

1

answer

Question


selecting values between vectors and plot the values
Hi, I have 4 vectors which are unsorted. All have all same length of 360: Ax, Bx - Values are real numbes between 0 to 360. V...

2 years ago | 1 answer | 0

1

answer

Question


System composser - can't save dictionary
I'm following the Getting Started Guide for system composer. When trying to save to new dictinory - i'm getting The data dictio...

2 years ago | 1 answer | 0

1

answer

Question


select values from matrix
Hi, I have a 2D matrix of size 2x360 and a vector of length 360 which contains values 1 or 2. From the matrix, I'd like to sel...

2 years ago | 1 answer | 0

1

answer

Solved


Project Euler: Problem 6, Natural numbers, squares and sums.
The sum of the squares of the first ten natural numbers is, 1^2 + 2^2 + ... + 10^2 = 385 The square of the sum of the first ...

2 years ago

Solved


Project Euler: Problem 7, Nth prime
By listing the first six prime numbers: 2, 3, 5, 7, 11, and 13, we can see that the 6th prime is 13. What is the Nth prime nu...

2 years ago

Solved


Project Euler: Problem 3, Largest prime factor
The prime factors of 13195 are 5, 7, 13 and 29. What is the largest prime factor of the number being input, input might be ui...

2 years ago

Question


axis equal - a bug in the function?
Hi, when executing following plot(1:10) axis equal I'm getting a figure as below, which seems not to comply with the definit...

2 years ago | 2 answers | 0

2

answers

Solved


Draw 'B'
Draw a x-by-x matrix 'B' using 1 and 0. (x is odd and bigger than 4) Example: x=5 ans= [1 1 1 1 0 1 0 0 0 1 ...

2 years ago

Solved


Draw a 'N'!
Given n as input, generate a n-by-n matrix 'N' using 0 and 1 . Example: n=5 ans= [1 0 0 0 1 1 1 0 0 1 1 0 ...

2 years ago

Solved


Draw 'C'.
Given x as input, generate a x-by-x matrix 'C' using 0 and 1. example: x=4 ans= [0 1 1 1 1 0 0 0 ...

2 years ago

Solved


Draw 'H'
Draw a x-by-x matrix 'H' using 1 and 0. (x is odd and bigger than 2) Example: x=5 ans= [1 0 0 0 1 1 0 0 0 1 ...

2 years ago

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