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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

answerQuestion

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

answersQuestion

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

answerQuestion

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

answersQuestion

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

answerQuestion

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

answersQuestion

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

answersQuestion

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

answerQuestion

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

answersQuestion

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

answerQuestion

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

answerQuestion

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

answersQuestion

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

answerSolved

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

answerQuestion

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

answerQuestion

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

answerQuestion

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

answersQuestion

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

answerQuestion

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

answerQuestion

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

answerQuestion

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

answerSolved

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

answersSolved

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