Question

How can uicontrol be used to make an editable dropdown (eg combobox) control?
I'd like to use the uicontrol of matlab and its arguments rather than the uidropdown. But I want the uidropdown functionality o...

4 years ago | 2 answers | 0

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How to reverse the order of words in string
There's undoubetly better solutions, but: strtrim(strrep(cell2mat([flipud(split('Hello. I. am. Here.'))']),'.','. '))

4 years ago | 1

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How to change interval unit of x axis
Here's one way You can do shape downsampling - reshape then sum the lines. I made some data by digitizing yoour plot. It's att...

4 years ago | 0

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Loading multiple images, taking mean of them and subtracting background
change the .png for whatever file extension you are using. Are your image greyscale? If not, it might not make sense to backg...

4 years ago | 0

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Alternating up and down in my script to find path through 'maze'
Try this algorithm: Goal:to assign a label to each connected track of 1's on a background of 0's. Procedure: Scan image left t...

4 years ago | 0

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How to filter data by date?
My suggestion is to convert all your times to an new variable of time in matlab's datenum format. A datenum is the number of da...

4 years ago | 0

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Plotting a smooth curve
First, I added a header to the xlsx file so readtable can be used properly. myData = readtable('Data_help.xlsx'); figure() pl...

4 years ago | 1

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Errors with my code
You redefined y to zero it out and at a different dimension than t. Also some typos in the annotation. T1=[0:0.001:2]; Y1=(-1...

4 years ago | 0

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Fourrier transform on image
Here's an example - the grid of features is space every 20 meters, the frequency found at 0.05/m corresponds to the frequency of...

4 years ago | 0

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Axes after 2D fft
Some great online references are in the matlab code. Whenever I post links at the top of an answer, the answer gets flagged as ...

4 years ago | 2

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flip an array with the use of vectors
a=[1 7 5 9 3 2 4 1]; a(3:6) = fliplr(a(3:6));

4 years ago | 0

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readmatrix with numbers and text from .csv file
The problem is your last line has 5 columns. This seems to do what you're asking, and hopefully will be enough to get you start...

4 years ago | 0

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How do I get only the HR out of this .csv
If you post the file, or at least the first 20 lines or so, it would be easier to say which command is best to use. Generally, ...

4 years ago | 0

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How to access folders within a loop
Try this (in absence of the Airport.xlsx files I can't completely test it here) - edit the obsdir back to your folder name where...

4 years ago | 0

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I have a problem with plotting a summation equation, Help me!
Hi. Editing - I had a (3-i) instead of (3+i) in the denominator - it's fixed now: k = 6; f = @(x)sum(sqrt((2*k-3)./((3 + [0:...

4 years ago | 1

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How can i put this below lines of code in a for loop?
Here's how to do it for png, because that is all I have. Change extension to tif. % Edit this to be your toplevel directory m...

4 years ago | 1

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How can I store data from an if loop into a 1D vector
This function returns the indices where the peaks for ECG values in time-segments defined by a user-specified threshold functi...

4 years ago | 0

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Using Read Table with a predefined Table size
Processing difficult text files - here the text file is space delimited with one or more spaces, but has a variable number of co...

4 years ago | 0

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Hi, check this question
Two Charges % Two 1 nC point positive charges are located at (-1, 0, 0) m and (1, 0, 0) m respectively. % Write a MATLAB scri...

4 years ago | 1

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How can I display multiple Images and plot the centroid ?
I played with the first part to make some more plot options (I had to do the poor man's distances because I can't afford the sta...

4 years ago | 0

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How to subset a table in a function based on input arguments
Can just use an anonymous function: clc close all clear all getVarsetTable = @(t,userPrefix) t(:,contains(t.Properties.Var...

4 years ago | 0

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How to change the way it is being plotted?
Possible solution (journal paper values just eyeballed not digitized) JSRdB=40:5:60; MSESilva = [0.9592 1.1141 1.6038 ...

4 years ago | 1

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Find cell position of a timeseries array
Assuming your data are in vector arrays that are, say, doubles, and packed as not cell arrays: test.Time = 0:0.1:50; test.Time...

4 years ago | 2

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I NEED TO SHOW THE COLUMN STACKED DATA OF MY LANDSET IMAGE
This unpacks the capture, but i'm not sure what you want next: [img,cmap] = imread('Capture.png'); imshow(img) imgData1 = s...

4 years ago | 1

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Construct a vector from another, but add 2 values every 10 iteration
Try this: npts = 811; A = linspace(0,1,npts); numAdded = sum(mod(1:npts,10) == 0); B = zeros(1,numAdded+npts); k = 0; for ...

4 years ago | 0

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creating a 1D vector
Here's one of many possible solutions (edited 2020/01/11 for off-by-one error in indexing): clc close all clear all ECG = ...

4 years ago | 0

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creating a 1D vector
Here's a solution that has a step by step process. clc close all clear all %% Step 0 % load the data ECG = dlmread('ECG...

4 years ago | 0

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Minimizing a function with one variable
Is this what you're looking for? p = pi; w = 9*pi/56; c = 5; rmin = -40; rmax = 40; % inline function fun = @(x)(0.5*p*...

4 years ago | 0

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How to tell if a random 3x3 Matrix is invertible
Back to your question, I have to produce a random 3x3 matrix A that is invertible and display it. One way could be to start with...

4 years ago | 0

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maximum of the radiation pattern in a direction
Solution, I hope! % for a general (theta0,phi0) express the surface in spherical coordinates % [Azimuth,Elevation,R] = cart2sp...

4 years ago | 0

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