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Tommy


Last seen: 1 día ago
325 total contributions since 2017

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Answered
Convert a vector into a matrix (row wise)
From the reshape() docs, for the syntax B = reshape(A,sz) "The elements in B preserve their columnwise ordering from A." If...

3 días ago | 1

Answered
Combining x and y arrays and converting subsequent values
Assuming x and y are formatted like the following... [x,y] = meshgrid(1:1920,1:1080); ...then how about this? q = nan(size(x)...

4 días ago | 0

Answered
Create matrix with different type of data and sort it based on one of its columns
For the following example: % example... A = strings(10,1); B = rand(10,1); you could use a table: % combine and sort... T ...

5 días ago | 0

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Answered
Patch color error "Vectors must be the same length."
The docs linked by Geoff mention that you can specify an n-by-1-by-3 array of RGB values (for n number of faces). I've defined c...

6 días ago | 0

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Answered
How to format output to exponential notation
This should work: fprintf('At voltage = %.2E nV\n',CurData(1,C)*10^9) If you don't want the plus sign: val = CurData(1,C)*10^...

6 días ago | 0

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Answered
How to return index of started specific pattern from array/matrix(column/rows)
See here: https://blogs.mathworks.com/loren/2008/09/08/finding-patterns-in-arrays/#7 idx = strfind(a, ex);

6 días ago | 1

Answered
Change labels positions for pie chart
One option: https://www.mathworks.com/matlabcentral/answers/94801-why-do-the-pie-labels-overlap-when-the-wedges-are-very-small-...

7 días ago | 0

Answered
How to fill a matrix column by column better than by a for loop?
How about something like this? xx = 0:0.1:1; nxx = numel(xx); nyy = 10; xm = repmat(xx',1,nyy); base = linspace(0,1,nyy);...

8 días ago | 1

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Answered
How to make the program more flexible
Here's a function that places an M x N grid of Xs within a rectangle defined by pos, as well as a few lines which use that funct...

8 días ago | 1

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Answered
Replacing Values in Matrix with NaN's based on Row and Column
Possibly, you could use sub2ind() to convert your rows and columns to linear indices: ind = sub2ind(size(yourMatrix), yourRows,...

10 días ago | 0

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Get the middle point of a matrix
Possibly MATLAB's convolution functions will be faster: % 1D case: B = conv(A, ones(2,1), 'valid') / 2; % 2D case: B = con...

11 días ago | 1

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Answered
Opening a figure saved in .fig with several plots and working on them separately
You could obtain handles to each of the axes within your figure and go from there: fig = openfig('myfig.fig'); ax_handles = fi...

12 días ago | 0

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Error When Using Writetable Function
It seems like writetable() has trouble handling the case where a variable in your table contains a cell which itself contains an...

12 días ago | 0

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Answered
Indexing a matrix in matlab according to conditions set on other matrices
Here's one way: result = (a <= 5 & b >= 6) .* c;

13 días ago | 1

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Answered
Plot with intervals for x axis
I believe stairs() is what you want: https://www.mathworks.com/help/matlab/ref/stairs.html

14 días ago | 0

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changing uislider position by script
sld = uislider(fig,... 'Orientation', 'vertical',... 'Position',[ 100 100 3 100],... ...

16 días ago | 0

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how to define a path in saveas command
Possibly like this? pathdatasave = 'E:\matlab'; saveas(gcf,sprintf('%s%03d.png', pathdatasave, i));

17 días ago | 0

Answered
Disable Datatips on click
Not the greatest solution, but you could make the datatips invisible until your timer deletes them: dcm = datacursormode; dcm....

18 días ago | 1

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Answered
Index exceeds the number of array elements (5).
Likely a typo in line 56: As(6)=-l^2*cos(phi); %Spring node 6 % ^ should be Af? As it is, Af only h...

18 días ago | 0

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Answered
Why aren't my lines showing up on my graph?
Specify a marker to show scalar values. For example, a circle: plot (GT, IP, 'ro') Or are you trying to plot a range of pressu...

25 días ago | 0

Answered
Plot only adjacent points that are close to each other
logidx = abs(diff(Y)) < 0.022; dY_idx = find([logidx 0] | [0 logidx]); Y_adj_close = Y( dY_idx ); Seems to me that every part...

25 días ago | 0

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Answered
Error Handling Question: How to Loop Until User Enters NUMBERS(!) in GUIDE gui edit boxes and then presses an "Update" button
Possibly, you ought to simply exit your callback function if the input is invalid? The values will then only be stored in your a...

25 días ago | 0

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Answered
giving color to output result
If you mean output to the command window, see this file exchange contribution from Yair Altman: https://www.mathworks.com/matla...

26 días ago | 0

Answered
why there is only one value at my plot
Without the below period, MATLAB is performing right matrix division on two 1x151 vectors, resulting in a scalar value. t = 0:0...

26 días ago | 2

Answered
How can I extract curve data from a .FIG file?
You could use findobj() on each figure to find the handles of the two lines. You can differentiate the lines by their LineStyles...

26 días ago | 0

Answered
Options for displaying data by clicking on a marker in a plot
For R2018b and later: X = rand(10,1); Y = rand(10,1); IDs = randi(100,10,1); s = scatter(X, Y, 'x'); s.DataTipTemplate.Da...

26 días ago | 0

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Answered
Operands to the || and && operators must be convertible to logical scalar values.
Use & instead for element-wise and (or | for element-wise or): whitePixels=ext_rows((150<ext_rows) & (ext_rows<200));

27 días ago | 0

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Answered
How to plot log-scale with number ?
Maybe something like this? % data: X = 2*logspace(1, 3, 100); Y = rand(100,1); % labels to keep: labels = [20 30 50 70 10...

27 días ago | 1

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Answered
creating a new matrix without certain rows with elements below a certain value
If I'm understanding correctly, I believe your third line is enough (with the addition of a colon in the second subscript of M t...

27 días ago | 0

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Answered
Access .mlapp data in .m file after app closes
Rather than waitfor(H), which waits until H is deleted, how about waitfor(H,propname,propvalue), where propname is some property...

29 días ago | 1

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