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Nathan Greco


Active since 2011

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Answered
for loop
The only thing that doesn't look right to me is where you have elseif size(qq)==[1,#] / size(qq)==[1,#+1] Where # is 6...

meer dan 12 jaar ago | 0

Answered
Store fllepath in variable
Yes. Just store it as a string. filepath = 'C:\Users\ecorbett\Documents\MATLAB\Labelers\fred'; filename = 'text.csv'; ...

meer dan 13 jaar ago | 1

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Answered
Determining Host ID
Does this help? http://www.mathworks.com/support/solutions/en/data/1-171PI/

meer dan 13 jaar ago | 0

Answered
How do I access and modify only the non diagonal entries in a matrix?
If tmp is your matrix, try: tmp-diag(diag(tmp)) %works only with square matrices OR triu(tmp,1)+tril(tmp,-1) Both of...

meer dan 13 jaar ago | 0

Answered
How did you learn MATLAB?
I started Matlab by being thrown into it through my internship at Sandia Natl. Labs two years ago. I learned how to program in M...

meer dan 13 jaar ago | 0

Answered
Changing the names of text files in a directory
Maybe this will do? (Run this under your NAIC directory.) Assuming you are on a windows machine: files = dir('*.txt.*'); na...

meer dan 13 jaar ago | 1

Answered
Nested loop problem !
Will this do what you are looking for: *EDIT:* a(:,3:end) = b(:,1:end-2); OR, if you really wanted a for loop: d = ...

meer dan 13 jaar ago | 1

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Answered
Finding diag of two cells
Does this work for you? diag(cell2mat([a b])) Note that the solution is the same as: diag([a{1} a{2}]) To get the di...

meer dan 13 jaar ago | 0

Answered
changes of data
You would not be able to use a matrix, as matrices can only contain the same data types (all numerical or all character arrays) ...

meer dan 13 jaar ago | 0

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Answered
Marking where one clicked with ginput
I did something similar to this when measuring diameters of soot particles. I would frequently get lost as to where I last click...

meer dan 13 jaar ago | 1

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Answered
Control Break Processing
Here's a dirty method, but no handwritten loops as requested. Assume tmp contains your 22x3 cell array of data (the 4th column ...

meer dan 13 jaar ago | 0

Answered
Imprecise Basic operations
See: http://matlab.wikia.com/wiki/FAQ#Why_is_0.3_-_0.2_-_0.1_.28or_similar.29_not_equal_to_zero.3F Welcome to the world of floa...

meer dan 13 jaar ago | 2

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Answered
Specify columns inside a for loop
You are only checking of the data within any given column is between 1 and 8, which isn't what you describe to be wanting. Ju...

meer dan 13 jaar ago | 0

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Answered
Writing variable as filename using csvwrite
Try writing: csvwrite(filename,A); %without quotes

meer dan 13 jaar ago | 0

Answered
dilation of specific objects
First, I would label regions in your image: bwl = bwlabel(img,8); Area of regions: a = regionprops(img,'area');...

meer dan 13 jaar ago | 0

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Answered
Counting number of zeros in column or row, without looping
Given A: idx = A~=0; c = sum(idx,1); r = sum(idx,2);

meer dan 13 jaar ago | 1

| accepted

Answered
Getting data values from a plot
User interpolation x = [1 2 4 5]; y = [1 3 4 9]; xi = x(1):.01:x(end); %values between x yi = interp1(x,y,x...

meer dan 13 jaar ago | 0

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Answered
Manipulation of different size of matrices with strings and numbers
Look up the documentation for CELL, it might suit your needs. doc cell In regular matrices, you cannot mix data ty...

meer dan 13 jaar ago | 2

Answered
montage function
The montage function allows you to input your own path to images that you want to use. doc montage Example, if the pictures...

meer dan 13 jaar ago | 1

| accepted

Answered
I want a button to be pressed in MATLAB GUI when Enter key is pressed. How to do it?
I do something similar to this. Use keypress functions, and check to see if the current character being pressed is the enter key...

meer dan 13 jaar ago | 1

Answered
Sorting Cell stucture with different data types
How about this one: [d ix] = sort(C{12}); newC = cellfun(@(x)x(ix),C,'un',0);

meer dan 13 jaar ago | 0

| accepted

Answered
Last Axes Display Image
You have a scope issue. Try doing this instead (note the "end"s) function Axes N.fh=figure('unit','pix',... 'Position',[40...

meer dan 13 jaar ago | 2

Answered
Challenge - Change my avatar colors
My "spy" command gives me a picture of a dog: spy To change the background and outline color in one shot: whitebg To c...

meer dan 13 jaar ago | 0

| accepted