質問

create cell array of individual years from a long time series
I have a matrix which is composed of a mixture of datevec and time series of measurements, e.g. time = datevec(datenum('196...

11年以上前 | 1 件の回答 | 0

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質問

save figure in a certain size
In the following figure: data = rand(1,365); subplot(121); plot(1:365,data); xlabel('label'); ylabel('label'); ...

11年以上前 | 3 件の回答 | 0

3

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質問

plotting data extending one year
In the following example I have a data set that extends over a section of two years. time = datenum('2008-04-17 02:00'):dat...

11年以上前 | 1 件の回答 | 0

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質問

calculating hourly means of a matrix
I have a dataset in the following format: dd = datenum('2009-04-17 02:00'); ddend = datenum('2009-11-24 12:27');...

11年以上前 | 2 件の回答 | 0

2

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質問

same y label on both sides of contourf
From the following example: [C,h] = contourf(peaks(20),10); colormap autumn How would I include the yaxis on the left...

11年以上前 | 2 件の回答 | 0

2

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質問

adding vector entry after each element
This is a very basic question but how would I add the elements of a vector like so...: x = [1,2,3,4,5,6]; ans = 3 6 10 15 ...

11年以上前 | 2 件の回答 | 0

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質問

find the row number of values greater than...
I would like to find in which column a desired number is first located. From the example below: x = [0,1,3,2,5,22,24,1,2,...

11年以上前 | 2 件の回答 | 0

2

回答

質問

interpolating over vectors and matrices
Consider the following example: time = 1/24:1/24:365; period = 0:0.0232:1.964; power = 0 + (1-0)*rand(85,8760); pc...

11年以上前 | 1 件の回答 | 0

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質問

evaluate the variation in the power of a known periodicity
Consider the following example: t = 1/24:1/24:365; x = cos((2*pi)/12*t)+randn(size(t)); % if you have the signal proc...

11年以上前 | 1 件の回答 | 0

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質問

analyse specific frequencies in a time series
I have a long data set of water temperature: t = 1/24:1/24:365; y = 1 + (30-1).*rand(1,length(t)); plot(t,y) The s...

11年以上前 | 1 件の回答 | 0

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質問

spectral coherence between several time series
I need some advice regarding the spectral coherence of several signals. Consider the following example: t = 1:365; A =...

11年以上前 | 2 件の回答 | 0

2

回答

質問

get children of a figure
I have a code below that highlights a defined region in a plot: x = 1:24; a = 1; b = 50; y = a + (b-1).*rand(lengt...

12年弱前 | 2 件の回答 | 0

2

回答

質問

calculate the correlation of a number of time series
If I have a matrix: data = rand(365,5); What is the most appropriate way of calculating the correlation between each col...

12年弱前 | 3 件の回答 | 0

3

回答

質問

calculate mean value for each hour of the day from a time series
I would like to calculate the hourly mean values for the following time series: DateTime = datestr(datenum('2011-01-01 00:0...

12年弱前 | 1 件の回答 | 0

1

回答

質問

solid contour lines for some specific values of a contourf plot
After generating a contourf plot is it possible to draw a solid black line around some specific values? For example: [C,...

12年弱前 | 1 件の回答 | 0

1

回答

質問

calculate monthly averages of time series
I have a dataset which contains measurements taken at discrete intervals for the past ~ 40 years. I would like to calculate the ...

12年弱前 | 1 件の回答 | 0

1

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質問

subplot within a subplot
Is there a method for generating a subplot within a subplot? For example: time = 1:168; RawData = cos((2*pi)/12*time)+ra...

12年弱前 | 2 件の回答 | 0

2

回答

質問

literature associated with the periodogram function
I have recently created a periodogram for some data: <http://www.mathworks.co.uk/matlabcentral/answers/42241-spectral-analysi...

12年弱前 | 1 件の回答 | 0

1

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質問

spectral analysis for time series data
I am attempting to analyse a time series with spectral analysis and am working through the example shown in: <http://www.math...

12年弱前 | 2 件の回答 | 0

2

回答

質問

generate time series
I would like to generate a time series for one year of hourly values, so for 2011 ti would 8760 values within the series. To mak...

12年弱前 | 1 件の回答 | 0

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回答済み
Calculate difference between two times
Its hard to suggest what you can do from your example. I would suggest converting any dates into julian dates when working in ma...

12年弱前 | 0

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A simple question
If you have 60 rows and 3 columns in matrix 'a' then you can find the mean of each row i.e. the first three values as you stated...

12年弱前 | 0

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回答済み
How to read the text files sequentially?
The main problem you have here is that you have not stored each of the text file names. The code shown below should solve thi...

12年弱前 | 1

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質問

use of horzcat
What is the use of horzcat? Is there an advantage of using horzcat over manually concatenating arrays horizontally? for example:...

12年弱前 | 1 件の回答 | 0

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回答済み
How do use fopen properly. Everytime I try I recieve an error.
Its hard to say without an example, which I realise is not easy in this case. I suggest to start with the help page. <http://...

12年弱前 | 0

解決済み

Column Removal
Remove the nth column from input matrix A and return the resulting matrix in output B. So if A = [1 2 3; 4 5 6]; and ...

12年弱前

解決済み

Find the sum of all the numbers of the input vector
Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

12年弱前

解決済み

Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

12年弱前

回答済み
Save a histogram in a folder and plot it later .
I dont know if this answers your question but you could save then as a .fig file! <http://www.mathworks.co.uk/help/techdoc/cr...

12年弱前 | 0

質問

omitting pointers when listing folder contents
In order to list folder contents I use: TopFolder = dir('E:\'); Say if I had one file within that specific folder MATLAB...

12年弱前 | 2 件の回答 | 0

2

回答