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...

oltre 7 anni ago | 0

| accepted

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:...

oltre 7 anni ago | 1

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...

oltre 7 anni 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...

oltre 7 anni ago | 1

| accepted

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...

oltre 7 anni 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...

oltre 7 anni ago | 5 answers | 2

5

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...

oltre 7 anni ago | 9

| accepted

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?...

circa 8 anni 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 ...

circa 8 anni 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(...

circa 8 anni ago | 0

| accepted

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...

circa 8 anni 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) ...

circa 8 anni ago | 0

| accepted

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...

circa 8 anni ago | 0

| accepted

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 ...

circa 8 anni ago | 0

| accepted

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...

circa 8 anni ago | 1

| accepted

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...

circa 8 anni 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...

circa 8 anni ago | 2

| accepted

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...

circa 8 anni ago | 0

| accepted

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...

circa 8 anni ago | 1

| accepted

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

circa 8 anni ago | 1

| accepted

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 |...

circa 8 anni ago | 0

| accepted

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...

circa 8 anni ago | 1

| accepted

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...

circa 8 anni ago | 1

| accepted

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...

oltre 8 anni ago | 1 answer | 0

1

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...

oltre 8 anni 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...

oltre 8 anni ago | 0

| accepted

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 =...

oltre 8 anni ago | 1

| accepted

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...

oltre 8 anni ago | 0

Answered
Sort Group Data Trends
Anthony, here's a solution relevant to my comment above. Note that there are in fact *4* groups: 7k, *8k*, 11k, and 15k. nu...

oltre 8 anni ago | 1

| accepted

Answered
square root of sum of squares on portions of cell arrays - Matlab Noob
out5 = {[0;0],[0;-162],[-54;72]} cellfun(@(vec)hypot(vec)*((-2*double(vec(1)<0))+1),out5) or cellfun(@(vec)sqrt(su...

oltre 8 anni ago | 0

| accepted

Load more