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reverse indexing with conditions
idx = 1:numel(A); mask = A < 5; idx = idx(mask);

約9年前 | 0

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I need to make a continuous timer
If you want to measure performance in real time (i.e. seconds), you can use the functions tic() and toc() which start and _read_...

約9年前 | 0

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Using for loops to generate an array?
m = 7; n = 6; A = zeros(m,n); for i=1:m A(i,:) = i:i:i*n; end This should work for any size array with rows m and c...

約9年前 | 1

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Color of hyperlinks in Answers posts
It's because a link you're putting in your post is most likely a webpage you've viewed recently. Chrome defaults recently viewed...

約9年前 | 0

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Keep getting Matrix dimensions must agree warning
You need to use element by element division, which is "./".

約9年前 | 0

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How can I find the second and third, etc. most frequent character in say a list of words (cell array of strings)?
a = unique(myStr); n = histc(myStr,a); [n,idx] = sort(n); myFreq = myStr(idx); Now myFreq will be the unique characters ...

約9年前 | 0

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Ho to enter this equation and plot it
Well you can't do either right matrix or element by element division on the vectors X and w. X is 1x41 while w is 1x2. I'm assum...

約9年前 | 0

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load txt files with columns of numbers and text
Try: fid = fopen('myFile.txt'); data = textscan(fid,'%s%s%d%d%d%d%s%d%d%d%d%d%d%d'); fclose(fid); This will read y...

約9年前 | 0

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Looping through a 3D matrix
for i = 1:144 for j = 1:43 for k = 1:35 myVal = myData(i,j,k); %do something end end...

約9年前 | 0

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How do I create a single line plot (just one line) with two differently scaled y-axes?
You can use plotyy() to plot two lines on top of each other so you only see one line. If the colors need to be the same, you can...

約9年前 | 0

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How do I determine if a word has a certain character in it?
If you only want to know whether or not the letter is in the word... hasLetter = any(myWord == 'c');

約9年前 | 0

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Excluding files with a certain keyword in them
Assuming you have the file name as a variable, I'll use myName: myName = lower(myName); idx = strfind(str,'composite'); i...

約9年前 | 1

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How to stop overwriting the old values from a loop inside a GUI?
I'd put k and ng as handles on the dialog box figure. myGUI.k = 1; myGUI.ng = 3; Then, function myCallback(varargi...

約9年前 | 0

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How to use text scan?
You can use textscan(fileID,'%s %s %s %s'); That will read all your data in. Only the last entry will matter, since tho...

約9年前 | 0

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Problem with find function
Modified code: hbs_ort = {'North' 'North' 'South' 'South' 'East' 'West' 'West' 'East'}; cabs_ort = 'North'; match=strfi...

約9年前 | 1

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check if user pressed the button "OK" in msgbox
Use questdlg instead. h=questdlg('Please press OK','something','OK','OK'); switch h case 'OK' %'OK' code here...

約9年前 | 0

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How to shade the area bounded by curves
This should do it. Modified from <http://www.mathworks.com/matlabcentral/answers/13233-plotting-linear-inequality-and-triangles ...

約9年前 | 0

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Why does xlswrite not replace file when I tell it to?
You could fill the file with empty cells, or there's a solution <http://www.mathworks.com/matlabcentral/newsreader/view_thread/2...

約9年前 | 0

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Read data from textfile
You could write something like data.txt: .25 .5 .75 1 .1822 .1751 ...etc. Then use something like textscan() or just ...

約9年前 | 0

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Is there a shortcut for selecting the word under the cursor in MATLAB?
You could use shift + arrow to move to the beginning/end of a word, then shift + control + arrow in the opposite direction to se...

約9年前 | 2

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How can i get points table from output graph in matlab?
p = plot(xValues,yValues); myX = get(p,'xdata'); myY = get(p,'ydata');

約9年前 | 0

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can a 2014 matlab program run on 2015 matlab?
It should, though is the possibility of incompatibility, but since the versions are only a year apart, I doubt there would be is...

約9年前 | 0

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Decrypting a message in matlab?
There are 3 things which don't work with your code: # It doesn't work when the key is >26. # Your checks for whether or not ...

約9年前 | 0

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GUI Figure Hide bottom part of figure
I'd say if you really needed the extra part to reveal from the bottom, you can write a resize function which adjusts the positio...

約9年前 | 0

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Where to find a complete list of supported class names for 'set' command?
I don't think such documentation exists. The issue is that set() is an extremely generic. Its function differs wildly with what ...

約9年前 | 0

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Finding a letter or number in a string of cells
out = {}; for i=1:numel(myData) myStr = myData{i}; myNum = str2double(myStr(myStr>= 48 & myStr <= 57)); m...

約9年前 | 0

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Using strings as variable names in a for loop
Have you tried stepping line by line using the debugger? You'll notice that in the line C=zeros(myvar); You're trying t...

約9年前 | 0

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Show value of an array in a messagebox
msgbox() doesn't give you a lot of options with the formatting. If you want to move the text to the right, you can add an icon. ...

約9年前 | 0

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Code to encrypt a string?
There are tons of Caesar Cipher resources out there. <http://www.mathworks.com/matlabcentral/fileexchange/39620-caesar-cipher...

約9年前 | 1

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Encrypting a Message with secret code?
There are tons of Caesar Cipher resources out there since it's a pretty basic problem in computer science courses. <http://ww...

約9年前 | 0

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