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...

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:...

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...

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...

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...

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

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...

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?...

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 ...

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(...

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...

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) ...

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...

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 ...

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...

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...

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...

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...

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...

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...

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 |...

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...

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...

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

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

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...

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 =...

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...

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...

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...

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