Community Profile # Kevin Holst

### US Air Force

2012 이후 활성

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How can I change contents of a string?
I'd say do something like this: names = strrep({data{:,1}},'/','-'); That assumes that all of the names are only in the ...

약 10년 전 | 0

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Calculate difference between two times
since you're getting this from a data file I'd suggest something like this: fid = fopen('data.txt'); data = textscan(fid...

10년 이상 전 | 0

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Loop Principal Component Analysis
I'd suggest looking at the help page a little more for PCA: http://www.mathworks.com/help/toolbox/stats/princomp.html "COE...

10년 이상 전 | 0

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Saving structs
If you're wanting to save the structure as a structure, don't put in the -struct flag. That saves all of the fieldnames as their...

10년 이상 전 | 2

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breaking a column of strings in two different columns
It appears that you can't really do matrix operations on cell arrays like: mycell{:,2} = mycell{:,1}(3:end); So here's w...

10년 이상 전 | 1

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Writing a matrix as column vectors
If Y is a workspace variable that is an m x n matrix, then you can extract the column vectors by: y1 = Y(:,1); etc. Is that...

10년 이상 전 | 0

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set default properties ERROR
It looks as though you may have a variable named 'set' in your workspace. Is that the case?

10년 이상 전 | 1

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surf plot behaves strange!
Surf attaches a color to a face based on one point on that face, and each face will be created by 4 points, so that color may no...

10년 이상 전 | 0

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GRIDDATA suitability for interpolating from one mesh to another
griddata (in this case griddata3) is going to be removed in a future release of Matlab. Use TriScatteredInterp instead. I've use...

10년 이상 전 | 0

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How to create random vectors of the same lengths?
from the documentation: Examples Generate values from the uniform distribution on the interval [a, b]. r = a + (b-a).*ra...

10년 이상 전 | 0

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for loop
You can't call or write to a variable like that in a loop, unfortunately. My suggestion would be to have a structure that contai...

10년 이상 전 | 0

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Plot points with unknown column numbers
Here's the fix, sorry it took a while. Got distracted ;) figure(2) names = 1:1:rx; for i =1:1:rx name = i; ...

10년 이상 전 | 0

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Plot points with unknown column numbers
did you turn hold back off? figure(2) names = 1:1:rx; for i =1:1:rx name = i; plot (fx,fy,'bo') ...

10년 이상 전 | 0

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geting value as Inf
Here's what I think your code should look like in order to run properly: M=100; r=0.8; alpha=0.45; beta=0.75; g...

10년 이상 전 | 0

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Passing base workspace variables to callback functions
Have you tried using the evalin function, maybe something like: x = evalin('base','var');

10년 이상 전 | 1

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geting value as Inf
I actually answered your problem in your previous problem. The error is in your calculations for c, p, and specifically a. These...

10년 이상 전 | 0

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Rows
column1 = min(mat,[],2);

10년 이상 전 | 1

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How can i get image from other GUI in a project - i can not use global variable
I'm assuming that the problem is you're unable to use the information you acquired from GUI2. Globals may work, but they're not ...

10년 이상 전 | 2

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need help optimizing this code...
I don't think that will work actually. Try this, it's a little convoluted, but I think it's correct: % this assumes w and s...

10년 이상 전 | 0

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color-coding a 2D plot
unfortunately shading interp doesn't seem to work on contourf so here's an inelegant solution to your problem. [x,y] = mesh...

10년 이상 전 | 1

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Problem with displaying output of executable
If you're compiling it as a 'Windows Standalone Application' switch that to a 'Console Standalone Application'.

10년 이상 전 | 0

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color-coding a 2D plot
how about: [x,y] = meshgrid(-10:0.1:10,-10:0.1:10); % just to get some x and y values z = sqrt(x.^2 + y.^2); contour...

10년 이상 전 | 0

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Add label to TXT file
you could just add a simple fopen command prior to your dlmwrite command: fid = fopen('c:\data.txt','w'); fprintf(fid,'H...

10년 이상 전 | 0

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Change position of numbers on x axes in surface plot
Perhaps something like this would work for you? grid off %this prevents the addition of gridlines at half spacing ha =...

10년 이상 전 | 0

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Call variables in for loop
To do this like you're attempting requires the use of the eval function, but be very careful in its use. Google 'eval matlab' fo...

10년 이상 전 | 0

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Measuring and Changing
if p1 and p2 are 2 element vectors: 1: d1 = sqrt(sum((p1-p2).^2)); 2: No explanation should be required. 3: d...

10년 이상 전 | 0

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Projectile connected by springs model
This is probably the 3rd or 4th submission of this same exact problem. Please review the question guide: <http://www.mathwork...

10년 이상 전 | 0

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To solve double integral

10년 이상 전 | 0

질문

plot data in from structure of data points with limits
I have a structure of datapoints, each of which is a structure of variables. I have created a simple function that will do a sca...

10년 이상 전 | 답변 수: 0 | 0

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Numerical Inputs to Solve and Using the Output value
The problem may be that you're expecting a single value, but solve will return 2 values because it's actually quadratic. What...

10년 이상 전 | 0