Answered
How can I share image data between callbacks?
Hi Saurabh, This one has a simple solution. Note the call in your first function: handles.pushbutton1 = imread(uigetfile...

10 years ago | 0

Answered
Performing stats on subsections of a matrix
Hi Swisslog, Try this: a = [1 1 1 2 2 4; 3 5 4 7 2 5]; % Pack your matrix contents into a cell array [unqA,~,grps]...

10 years ago | 0

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Answered
Why is my surf animation so slow?
Hi Phil, There are a few things you can do to speed this up. Firstly, the *pause* command will force your loop to sit idle...

10 years ago | 0

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Answered
How do I change Grid Size in R2013a?
Hi Edgar, You can set the *XTick* locations of an axis (or the current one via *gca*) directly: tickValues = min(x):0.1:...

10 years ago | 1

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Answered
Contributors metainfo: reputation and more
*Recent news:* ... and *BAM!* Walter hits *25,000*! Congratulations are in order again. It's impressive to see, but depressin...

10 years ago | 4

Answered
how to project images on the side walls of a 3D surf plot
Hi Konstantinos, Does this code get you on your way? R = 0:0.1:1; z = cos(-R); % that'd be your current y-f...

10 years ago | 1

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Answered
What's on your personal MATLAB to-do list?
A triangulation3d class which would basically inherit the standard triangulation class, but add useful features specifically for...

10 years ago | 2

Question

What's on your personal MATLAB to-do list?
What MATLAB tools or functions have you been thinking about making but haven't quite gotten around to it? It can be something...

10 years ago | 6 answers | 2

6

answers

Answered
Reading lines from a text file and storing them into an array.
Hi Surush, The trick is to put each line in an element of a cell array. Here's some commented code that does what you're t...

10 years ago | 11

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Answered
Error using surf() with colorbar and title
Hi Christian, try this: opengl('software') figure,surf(magic(99)),colorbar,title('Va') Does that sort it out as well?...

10 years ago | 0

Answered
How to execute a function after the value of a property changed? Problems with callback function
If all of the observation of *PMV* is done by the *RB* class itself, so there's actually a better/cleaner way to do what you're ...

10 years ago | 0

Answered
find intersection between two data sets
Hi Carlos, try this code: dataset = rand(20,2); zoneXY = rand(1,2); zoneRadius = rand(1); dists = sqrt(sum(bsxfun(...

10 years ago | 0

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Answered
Interpolating vectors at specific points
Hi Christopher, here's a solution that does the job. If you can guarantee that you only have one crossing in your vector V, then...

10 years ago | 0

Answered
What am I doing wrong with object oriented programming?
Mark, you're almost there. Here's how to "just get it running": methods function q = calculateSin(this, x) ...

10 years ago | 0

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Answered
how to calcuate mean with NaN
If you have the Statistics Toolbox, just replace calls to |mean()| with calls to |nanmean()|. If you don't have it, you can d...

10 years ago | 0

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Answered
2D Contour colormap too dark.
Hi Marc, Got it. The RGB values you're copying in are 8-bit RGB colours of integers ranging from 0 to 255. You're right that ...

10 years ago | 0

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Answered
Elevate a single isoline in a contour (2D) plot
Hi Marc, Is this what you're trying to do? [x,y,z] = peaks; z = z*10 figure [c,h] = contour(x,y,z,'LevelStep',2...

10 years ago | 1

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Answered
update objects' coordinate of the same plot !!!!!!!!!!!!!!!!!!!
Hi Bolivar, Let's just go with one object first for simplicity: Here's the contents of the *user1* class: classdef us...

10 years ago | 0

Answered
How to convert binary image to 2D triangulation?
Geert, here's how I'd do it. Note that I use <http://www.mathworks.com/matlabcentral/fileexchange/30525-isocontour isocontour> f...

10 years ago | 2

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Answered
How to convert 2D triangulation to binary image?
Hi Geert, Here's something that does what you want. It's not optimised for speed as it simply iterates naively through triang...

10 years ago | 0

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Answered
Plotting 4d data with matrices.
Naty, as per the comment above I can't replicate your exact data, but here's an example that should show you how to make the fig...

10 years ago | 1

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Answered
count of months spanned
Hi Leah, I think you can do this quite nicely as follows: startvecs = datevec(startdates); endvecs = datevec(enddates...

10 years ago | 1

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Answered
Nested if statement won't execute
Perhaps the value of |i| is never set, or at least never set _in the scope of the loop that you are running_. Perhaps you mean |...

10 years ago | 0

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Answered
Errors in solving nonlinear simultaneous equations
You can't plot a simultaneous equation during iterations in that way. If you instead put: options = optimoptions('fsolve...

10 years ago | 1

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Answered
Retrieve all data from columns apart from id when using MySQL
Hi Gurvinder, Can I suggest that I think it would be easier for you to simply get _all_ the fields, and then just discard the...

10 years ago | 1

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Question

Equation of a constrained circle
I have a circle with known parameters (x,y,r): x = 37 y = -7 r = 38 I would like to find the parameters of a new c...

11 years ago | 1 answer | 0

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answer

Question

Convert/decompose formula terms similarly to LinearModel
I'm trying to do something which must be implicitly done inside *LinearModel.predict()*, but I can't seem to get to it. The t...

11 years ago | 1 answer | 0

1

answer

Answered
Plotting elements of a matrix versus elements of another
Ryan, does this do what you wanted? X = rand(10,10) Y = X^2 figure, stem(X(:),Y(:)) The (:) operator will basicall...

11 years ago | 1

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Answered
Accessing values of fieldnames in a structure without using the fieldnames function
Hi Jess, Use parentheses: S = struct('field1',1,'field2',2) fieldStr = ['fields' num2str(1)] S.(fieldStr) ans =...

11 years ago | 1

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Answered
how to use a parameter name list as input for a function?
Skirt, you were very close. You just need to use a cell array: %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% function out=try...

11 years ago | 0