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Richard


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提问


re-build time series from pwelch after removing peaks in the spectra
I have time series data that is similar to the following: t = 3650; % number of days in ten years t = 1:t; % generate ti...

9 years 前 | 1 个回答 | 0

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提问


find and store index for consecutive numbers
Consider the following: Jday = datenum('2009-01-01 00:00','yyyy-mm-dd HH:MM'):1:... datenum('2009-12-31 23:00','yyyy...

11 years 前 | 1 个回答 | 0

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提问


add additional parameter to contour plot to generate 3d plot
I have an equation which has 3 unknown variables V, s, and T. I want to produce a contour plot that shows what happens when each...

12 years 前 | 2 个回答 | 0

2

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提问


replace nan values with the mean of other cell array
Consider the following example: Jday = datenum('2007-01-01 00:00','yyyy-mm-dd HH:MM'):1:... datenum('2009-12-31 23:0...

12 years 前 | 1 个回答 | 0

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提问


introduction to matlab I/O
I have some files that collect high resolution acoustic measurements and I wish to import some of the information into matlab wh...

12 years 前 | 1 个回答 | 0

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提问


solving simple equations in matlab
I have 2 variables: d1 = 1:5; d2 = 6:10; I would like to calculate 'dat', which is given by: dat = d1./(10.*d2);...

12 years 前 | 3 个回答 | 0

3

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提问


calculate week of year
I have an annual time series where measurements are recorded at hourly intervals: StartDate = '2011-01-01 00:00'; EndDat...

12 years 前 | 2 个回答 | 0

2

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提问


short time fourier transform
I would like to perform a short time fourier transform (STFT) to a synthetic data series. I can compute the fourier transform by...

12 years 前 | 3 个回答 | 0

3

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提问


plotting in time domain - update plot
I'm working through an example I saw online concerning vertical motion under gravity. The following code and plot shows the outc...

12 years 前 | 1 个回答 | 0

1

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已回答
Why does the first value in loop get overwritten
Try Fi = [0,0.8:0.05:1]; T = 160; NPV_list = NaN(length(Fi),1); for fi = 1:length(Fi); F = Fi(fi); l...

12 years 前 | 0

提问


difficulties with datetick and subplot dimensions
I have several time series that I am trying to analyse and I am plotting all the series in different subplots and scatter plots....

12 years 前 | 0 个回答 | 0

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已回答
Hi, I'm trying to figure out why my script is only ploting the last input angle, not regarding any of the loops before it.
Try to put hold after the plot command: plot(x,y); hold on;

12 years 前 | 0

已回答
how to omit the the dot and numbers
Not sure yet about cancelling the numbers, but you could omit the dots as follows: tt = {'a','0','.','c','1','.','c','3','....

12 years 前 | 1

已回答
Saving outputs in workspace
Maybe use assignin --> <http://www.mathworks.co.uk/help/matlab/ref/assignin.html>

12 years 前 | 1

| 已接受

提问


replace missing values in a matrix
Consider the following: A = [1,1,1; 2,3,1; nan,3,1; nan,3,nan]; how would I replace the missing val...

12 years 前 | 2 个回答 | 0

2

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提问


find number of columns on text file
Is it possible to determine the number of columns in a text file prior to importing the data into matlab? I can determine the...

12 years 前 | 1 个回答 | 0

1

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已回答
no degree symbol
I dont know if this will help but I use ^{o} so for temperature in degrees C I type xlabel('Temperature ^{o}C');

12 years 前 | 9

提问


removing a loop from a script
I have a matrix 'd' which represents air temperature at specific heights above the ground and for different days of the year. Ea...

12 years 前 | 1 个回答 | 0

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提问


replacing nan values with the mean of a moving window
From the following: t = transpose(1/24:1/24:40); data1 = 1+(30-1).*rand(length(t),1); Randm = floor(1+(length(t)-1).*...

12 years 前 | 1 个回答 | 0

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提问


extracting values at set intervals from a vector
From the following vector: depth = [0:0.1:20]; How could I create a new vector that had the same data as 'depth' but a v...

12 years 前 | 1 个回答 | 0

1

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提问


explanation for script containing while loop
I was given a script for reading data from a specific file, and although the script works, I don't understand one section of it,...

12 years 前 | 1 个回答 | 0

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提问


gain information from a .cnv file
I have some data stored in a .cnv file, the data is stored as follows: # <!-- Pressure voltage, Pressure, Strain Gauge ...

12 years 前 | 1 个回答 | 0

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提问


re-formatting a matrix
This is a simplistic example of a problem I am facing: depth = [0:1:20]'; data = rand(1,length(depth))'; d = [dep...

12 years 前 | 2 个回答 | 0

2

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提问


insert an array according to the values from another variable
From the following example: time = [733774,733774,733775,733775,733775,733776,733776]; bthD = [20,10,0,15,10,20,10]; ...

12 years 前 | 1 个回答 | 0

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提问


find values from a matrix according to a criterion
I have a time series of measurements as follows: time = [733774,733774,733775,733775,733775,733776,733776]; data = [1,1....

12 years 前 | 2 个回答 | 0

2

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提问


plotting data from two years with day of year replacing julian date
I have the following code for producing a plot of data that extends two years in terms of day of year: time = datenum('2008...

12 years 前 | 2 个回答 | 0

2

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提问


Method for aligning tick labels
Is there a method of aligning tick labels? I have a figure that has two y axis where the values vary greatly. I would like to al...

12 years 前 | 1 个回答 | 0

1

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提问


different limits for 2 yaxis
I'm generating a plot with 2 yaxis showing two datasets with larger differences in their values, e.g. data1 = 100 + (200-10...

12 years 前 | 2 个回答 | 0

2

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提问


white contour on top of grayscale image
Is there a method for changing the colorscale of your figure to grayscale without using the colormap('gray') option. I have an i...

12 years 前 | 2 个回答 | 0

2

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提问


on the use of the accumarray function
Could someone please explain to me how the accumarray function works. For example: val = 101:105; subs = [1; 2; 4; 2; 4]...

12 years 前 | 2 个回答 | 2

2

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