Respondida
Error `Index exceeds the number of array elements` while loading .mat file
You have created a variable named 'load' in this line, load = 0; % 轴承的载荷（单位：马力）（可能是0、1、2、3马力） and later also in,...

8 meses hace | 1

Respondida
AppDesigner: Is it possible to interactively stretch/schrink plots ("Axes") in x or y direction separately (NOT zoom in/out both)?
This example looks applicable to you: Restrict Zooming to X-Dimension.

8 meses hace | 0

Respondida
how to create the number of equations from a correlation matrix by excluding the most correlated variables?
That sounds like a bad idea. Normally, in MATLAB, you wouldn't write your equations in scalar form. You would write a matrix equ...

8 meses hace | 0

| aceptada

Respondida
Unable to use structName.?ClassName for VideoWriter class
The .?Classname syntax only works on the class properties with public SetAccess. Unfortunately, the VideoWriter class does not h...

8 meses hace | 2

| aceptada

Respondida
Closed contour with least square differences to dataset
A closed curve, e.g. a circle, would usually satisfy an implicit equation F(x,y)=0 The way to approach that is with implicit e...

8 meses hace | 0

Respondida
Polyfit isn't adjusting to decreasing sinoidal data
Polynomial fitting above 10 degrees or so is a famously ill-conditioned numerical task, see also, https://en.wikipedia.org/wiki...

8 meses hace | 0

Respondida
The keyboard shortcut to change focus to the editor doesn't work.
Try first dragging the editor window into focus manually with the mouse. Then, check if Ctrl+0 and Ctrl+Shift+0 toggles the edit...

8 meses hace | 0

Respondida
how to filter columns
m=576; n=1000; k2=randi([0,1],m,n).*rand(m,n); tic; r=max( (k2==0)'*k2 ,[],2); toc;

8 meses hace | 0

Respondida
Get extrinsic camera parameters from pose estimation
From the documentation for estimateMonoCameraParameters, it appears that the camera is assumed to lie at a translation of C=[0,0...

8 meses hace | 0

| aceptada

Respondida
Mean of 3D matrix based on range of first dimension
This might seem a little counter-intuitive, but the key is that it avoids extracting a submatrix (an expensive op) from the inpu...

8 meses hace | 0

Respondida
Measuring Line Profiles in IMages
I=im2double(im2gray(imread('image.png'))); BW=imbinarize(I); D=bwareaopen(abs(gradient(I))>0.06,20); D=imclose(D,strel('d...

8 meses hace | 0

| aceptada

Respondida
do we have any pre provided function for reitveld refeinement in matlab
No, there is no dedicated crystallography toolbox in Matlab. You could build your own with Optimization Toolbox functions like l...

8 meses hace | 0

Respondida
Issues creating error bar for bar figure
Here's an MWE: x = ["A"; "B" ] ; y = [3,4] ; err = [0.5,0.75] ; bar(x, y); hold on errorbar(categorical(x),y,err,'r',...

8 meses hace | 1

| aceptada

Respondida
How to set a protected superclass property from subclass method?
You cannot use the ?.MVA syntax on non-public properties. Since you already have validation in the base class, I don't think you...

8 meses hace | 0

Respondida
rref matrix with an unkown variable
I am expecting to get (did this by hand): Your expected result doesn't look right. For both row-echelon and reduced row-echelon...

8 meses hace | 0

| aceptada

Respondida
Strange behaviour using double
You could replace the commas with some other NaN-triggering character, e.g., c={'1.23', '1,234'} double(replace(string(c),',...

8 meses hace | 0

Respondida
Compare two row and select appropriate data
Basically column b is the "cap." If so, one could also do, a=[1;2;3;4]; b=[1;1;3;3]; c=clip(a,-inf,b)

8 meses hace | 0

Respondida
Reduce x-axis line length in a bar plot that is in a tiledlayout
For finer control, download subaxis. Use that instead of tiledlayout. clear, %close all % Define the data 1 Names1 = {'A...

8 meses hace | 1

| aceptada

Respondida
Compare two row and select appropriate data
c=max(a,b)

8 meses hace | 0

Respondida
Error while running my objective function by fmincon with nonlinear constraint for calculate optimization coordination overcurrent relay
You have a parameter b defined here b = 0.14; but then you overwrite it here: A = []; b = []; Aeq = []; beq = []; Also, r...

8 meses hace | 1

Respondida
Suppressing Live Script plotting figure inline
I don't think it's possible. However, you could shrink down the side bar area of the livescript where the figures are displayed,...

8 meses hace | 0

Respondida
A more efficient way to do this calculation
function [HD_cols] = members(Ic); HD = [ ... 160000/100^4, 180000/100^4, 204000/100^4, 226000/100^4, 250000/100^...

8 meses hace | 1

Respondida
Reading JSON struct from file adds prefix 'x' to fieldname if it starts with number
but I cannot find anything that would explain why 'x' is added. Presumably you know that something must be added, because vari...

8 meses hace | 0

| aceptada

Respondida
Figure window not showing up
I wonder if the default figure position changed somehow so that figure windows open off-screen... Opening a window with an expli...

8 meses hace | 0

| aceptada

Respondida
Build matrix from corresponding table variables stored in cell array
load data D=reshape( vertcat(C{:}).Col1 , height(C{1}) ,[])

8 meses hace | 1

| aceptada

Respondida
Build matrix from corresponding table variables stored in cell array
I hope you understand that speed-wise there is no way to iterate over cell arrays that is faster than a for-loop. However, using...

8 meses hace | 0

Respondida
Finding the length distribution of zeros in data?
You can use this File Exchange submission, https://www.mathworks.com/matlabcentral/fileexchange/78008-tools-for-processing-cons...

8 meses hace | 0

Respondida
Issues with reproducibility in multistart with parallelization
I don't see why you would expect agreement between a 50-point multistart and a 150-point multistart. Only if both versions succe...

8 meses hace | 1

Respondida
How can i write a MATLAB script for surface profile analysis of different geometries(such hemisphere, plane, sphere, asphere...) including vertex search, data processing,fit?
It sounds like this might benefit you, https://www.mathworks.com/matlabcentral/fileexchange/87584-object-oriented-tools-to-fit-...

8 meses hace | 0

Respondida
Operations with rows First, second and third
For example, a = [0 1 1 0 0 1 0 1 0; 1 1 0 1 0 0 1 1 1; 0 0 0 1 1 1 0 0 1] first_and_second = sum( ~a(1,:)&a(2,:))

8 meses hace | 1

| aceptada