Community Profile

Sara

Los Alamos National Laboratory

158 total contributions since 2014

Professional Interests: Atmospheric science, biosurveillance, HAZMAT modeling

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Convert cell of strings to numbers
If your cell array includes only numbers, you can use cell2mat

etwa 4 Jahre ago | 0

how to write general code for generating points
You can write the for loop in the following way: for I=1:m x1 = LB(I)+(UB(I)-LB(I))*rand(500,1); X = [X x1];...

mehr als 4 Jahre ago | 0

Speeding up matrix comparison within a loop (logical indexing???)
Without having any data to test it, I'd say you could do: for i=2:12 x = squeeze(imlab50(i,:,:,:)); outpu...

mehr als 4 Jahre ago | 0

Doubt regarding ode45 plotting
ode45(@(t,x)DFG789(t,x,var_1),..... Then the function becomes: function dB = DFG789(Z1,B,var_1)

mehr als 4 Jahre ago | 0

Storing data from for loop
Try replacing FileName(s) with FileName{s}

mehr als 4 Jahre ago | 0

Recursive concatenation of cell arrays
Events_ext2 = Events_ext; i = 0; while i < numel(Events_ext2)-1 i = i + 1; if(Events_ext2{i+1}(1)-Events_e...

mehr als 4 Jahre ago | 0

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Plot single vector from 3D array
Try this: plot(squeeze(MyVar(1,1,:)))

mehr als 4 Jahre ago | 2

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horizontal lines in candle chart
x = [0 60]; ylev = [0 23.6 38.2]; % add all levels you want hold on; for i = 1:numel(ylev) plot(x,[ylev(i) ylev(...

mehr als 4 Jahre ago | 1

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Position of a data at Matrix
Given the matrix A [i,j] = find(A == max(max(A))

mehr als 4 Jahre ago | 1

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Writing Character Strings from Text file to CSV, Error using fprintf Function is not defined for 'cell' inputs
Use C = C{1} after the textscan command. But, why not using csvwrite later?

mehr als 4 Jahre ago | 0

Displaying a saved value in plot's textbox.
Replace: 'Area_s_s = ' with ['Area_s_s = ',num2str(a),'kJm^-3'] in the annotation. It's also better if you use ...

mehr als 4 Jahre ago | 0

save results in new struct
Here is how your code will look like: if true empty_max.cost=[] mymax=repmat(empty_max,[3,3,2,numel(A)]) for...

mehr als 4 Jahre ago | 0

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How to split columns up into different numbers of figures?
% This values are here just to show an example n = 7; % num A = zeros(10,n); for i = 1:n A(:,i) = i; end ...

mehr als 4 Jahre ago | 0

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Importing different sheets of an Excel Data
You can retrieve the name of the sheets in an excel file with xlsfinfo

mehr als 4 Jahre ago | 0

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plotting 2 vectors of different
with hold on. figure plot(x1) hold on plot(x2)

mehr als 4 Jahre ago | 1

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how use GUI outputs (variables) in another .m file?
If you just want to calc the result once you've inputted the values, you can do: In function pushbutton1_Calculate_Callback(h...

mehr als 4 Jahre ago | 0

Change positions of specific compoent based on conditions
Use the handles variable to carry around your values. In the opening function, do: handles.origin = ..... handles.prev =...

mehr als 4 Jahre ago | 0

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hello, i am new on matlab and i keep getting this msg : matrix dimensions must agree!! any help please? its line 28
Replace lines with this dV = kconst*dq ./ ( ( (kx0-x).^2+(ky0-y).^2+(kz0-z).^2 ).^0.5 ); V(ki)= sum(sum(dV)); % ca...

mehr als 4 Jahre ago | 0

Help needed with matrix in for-loop and output of matrix
With x,y column vectors: A = [x,y]; B = sortrows(A,1); unique_x = unique(B(:,1)); new_matrix = zeros(numel(unique_x),2...

mehr als 4 Jahre ago | 3

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Question

Zoom behavior in figure embedded in GUI
I have built a GUI that contains some axes and created a pushbutton to let the user zoom in and out of the image. I can't figure...

mehr als 4 Jahre ago | 2 answers | 0

2

Mirror of countourf on X, Y axis
Look at the following example. If x and y start from 0, you can repeat the contour command 4 times. otherwise, you need to trans...

fast 5 Jahre ago | 0

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operands to the and && operators must be convertible to logical scalar
In find you need to use & not &&

fast 5 Jahre ago | 0

How can I save a string from a uicontrol edit box into a a part of my structure ?
You have to put your string into the handles structure as handles.s_Name = s_Name; and then save it with: guidata...

fast 5 Jahre ago | 0

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Pass Data between Gui`s
In GUI_1, store everything you need to share in handles, and call GUI_2 as: GUI_2(handles) This may go into a pushbutton...

fast 5 Jahre ago | 4

how to plot grid mapping for robot path planning ?
Adapt to your case the following script. I've colored the rectangles with facecolor, but you can eliminate that if you want just...

fast 5 Jahre ago | 0

Modifying files and merge files
fid1 = fopen('filewithdates','r'); fid2 = fopen('filewithhours','r'); fid3 = fopen('output.txt','w'); w...

fast 5 Jahre ago | 1

how to write this data in text file?
Try this: sets = rand(9,5) for i = 1:9 fprintf(fid,'%.2f ',sets(i,:) ); fprintf(fid,'\n'); end

fast 5 Jahre ago | 0

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How can I generate a grid schematic in MATLAB?
Take a look at the code. nrow and ncol will be your adjustable inputs. Now the code wait for the user to click on the image (gin...

fast 5 Jahre ago | 2

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GUIDE outputting a .txt file
Look up fopen, fprintf, and fclose. Your code will be something like this: fid = fopen('filename.txt','w'); fprintf(fid,...

fast 5 Jahre ago | 0

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