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Find all elements less than 0 or greater than 10 and replace them with NaN
Given an input vector x, find all elements of x less than 0 or greater than 10 and replace them with NaN. Example: Input ...

12 years ago

Solved

Select every other element of a vector
Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...

12 years ago

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Add two numbers
Given a and b, return the sum a+b in c.

12 years ago

Solved

Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

12 years ago

Answered
How to plot data after being selected in Excel
what command are you using to import the data from Excel? Cant you just import them into your workspace and then specify the var...

12 years ago | 0

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Large structures won't save
I doubt that MATLAB is out of memory. You are probable just saving the data incorrectly. Look at <http://www.mathworks.com/m...

12 years ago | 0

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simple question
using ChangesN = find(diff(S)) would demonstrate where the value was changing and then to see how many time this happen...

12 years ago | 1

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question with correlation
Not sure what you are asking, but this may help. a = 1; b = 20; data = a + (b-a).*rand(20,4); R = corrcoef(data); ...

12 years ago | 0

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Question

find repeating numbers
What is the best method to find the numbers in an array which repeat most frequently. For example, say that I have a matrix of v...

12 years ago | 3 answers | 0

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error using fopen
what about: a = [6,7]; filename = 'E:\test.txt'; fid = fopen(filename,'wt'); fprintf(fid,'%g\t%g',a); fclose(fi...

12 years ago | 0

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TXT export
This code may give you some ideas: clear all a = 1; b = 20; data = a + (b-a).*rand(100,4); Heading = {'Data'}; ...

12 years ago | 0

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TXT export
I would suggest using fprintf instead of dlmwrite: <http://www.mathworks.co.uk/help/techdoc/ref/fprintf.html> In order to ...

12 years ago | 0

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problem in solving code for arrehenius equation,To and Ta are in kelvin
in your loop what is 'l' suppose to be? Your stating that your loop goes from 1 to 'l' but haven't specified what 'l' is. Fro...

12 years ago | 0

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2D plot
Are you thinking of something like this? clear all x=[1,2,3,4]; y=[-1,2,-3,-4]; strValues = num2str([x(:) y(:)],...

12 years ago | 0

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Question

removing for loop by using cellfun
Could anyone provide information on how to remove the for loop from this line of script: for i =1:length(Name); Data...

12 years ago | 1 answer | 0

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How to exclude more than 1 columns from a matrix?
simple way would be: Data(:,3) = []; Data(:,5) = [];

12 years ago | 0

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How could I get a smooth curve by "plot" function?
you could use the smoothLine function from the file exchange: <http://www.mathworks.com/matlabcentral/fileexchange/9369-smoot...

12 years ago | 0

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Improving matlab skills
What is the best way of improving my matlab skills? I have been using matlab for some months now and have learnt a lot in that t...

12 years ago | 2 answers | 1

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Question

significant correlation values
How is it possible to test whether the correlation between 2 time series is significant? For example: clear all a = 1...

12 years ago | 1 answer | 0

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Question

convert Julian day to month
Consider the following: clear all depths = 1:1:12; temp = 0 + (20-0).*rand(8760,12); DateTime = datenum('2011-01-0...

12 years ago | 1 answer | 0

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Question

change interval for xtick label
Consider the following example: clear all x = (0:23).'; n = numel(x); time = cellstr(datestr([ones(n,1)*[2012 3 1...

12 years ago | 1 answer | 0

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Answered
Simple but elusive array question
should your question be like 'a' below? clear all a = [1,1,3;2,0,4;3,0,0;0,0,0]; b = arrayfun(@find,a,'un',0); If ...

12 years ago | 0

Question

tick marks in boxplot
close all fh = figure(1); boxplot(data,time,'colors','k','jitter',1,'medianstyle','line',... 'whisker',...

12 years ago | 1 answer | 1

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changing text orientation of lcolorbar
Im not sure if this answers your question but if you want to rotate the text by the colorbar (as noted above): c = colorbar...

12 years ago | 0

Question

vectorizing a script with cellfun
I'm aiming to import data from various folder and text files into matlab. clear all main_folder = 'E:\data'; %D...

12 years ago | 3 answers | 0

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xlsread and fwrite: remove unwanted single quotes from strings
The quotes just mean that it is a string. If you type something like stringcountry{1} it should provide the name of the countr...

12 years ago | 0

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Finding value behind string
Couldn't you import all of the text file into matlab using textscan and then select the appropriate fields afterwards? It may pr...

12 years ago | 0

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cells related
pre-allocate memory first, this may speed it up. <http://www.mathworks.co.uk/help/techdoc/matlab_prog/f8-784135.html> ...

12 years ago | 0

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Retrieve data from Hard Drive (Local Directory)
I would think that you need to use the dir command. If the files are located in your C drive then: clear all TopFolder =...

12 years ago | 0

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Question

plotting data which extends several years
Consider the following example: clear all time_2007 = linspace(1+0.0417, 366, (366-1)*24); time_2008 = linspace(1+0...

12 years ago | 1 answer | 0

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