# Scott MacKenzie

### York University

Last seen: 5 meses hace Con actividad desde 2020

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Respondida
Compare vectors of different lengths using end of shorter one when it ends
Someting like this perhaps: A = 1:10; B = 1:5; C = 1:15; nA = length(A); nB = length(B); nC = length(C); % A + B if ...

más de 1 año hace | 0

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Plotting a scatter graph with a categorical X axis
Just follow your chart function with code to add tick labels at 5, 15, 25, etc. Something like this should work: xticks(5:10:5...

más de 1 año hace | 1

Respondida
Create a new vector to set identity of each cell in Voronoi Diagram
If I understand correctly, C -- the type of each cell -- identifies the corresponding quadrant for each point. You also want to...

más de 1 año hace | 0

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How to do ANOVA repeated measures?
Here's a script for the ANOVA that includes both the within-subjects IV (sucrose concentration and the between-subjects IV (gend...

más de 1 año hace | 0

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how to calculate three way repeated anova?
It seems you have a design with three independent variables. Two are between-subjects and one is within-subjects: Stress (betw...

más de 1 año hace | 0

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how to perform a wilcoxon test on 10 groups ?
The Wilcoxon test is used to compare two sets of within-subjects data (aka data from correlated samples). The equivalent test w...

casi 2 años hace | 0

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How to prepare my data for ANOVA?
@Steve Schulz, thanks for posting the data. You have organized the data in a slighly peculiar way. You've got session 1 in row...

alrededor de 2 años hace | 0

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Set up Repeated Measures Anova function MATLAB
@Jacob Jacobo, your setup for fitrm is slightly wrong, since you only have a single within-subjects factor. Below is what I put...

alrededor de 2 años hace | 0

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Struggles with Two way Anova
OK, thanks for the clarification. It seems you have a 2 x 2 mixed design with 10 subjects. The factors are Test Sequence with ...

alrededor de 2 años hace | 1

Respondida
bars are stacked instead of grouped while 'grouped'
To group the bars, use something like this: qual = rand(57); qual_jong = rand(29); qual_oud = rand(29); d = [qual(57,3:14); ...

alrededor de 2 años hace | 0

Respondida
x-axis of multcompare() does not plot group means
You didn't do anything wrong. The Kruskal Wallis procedure, being non-parametric, works with the rank-transformed data, not the...

más de 2 años hace | 0

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Calculating and add the std error bar from the mean values
You can't calculate the standard error from the means. You need the raw data. If the raw data (used to calculate the means) ar...

más de 2 años hace | 0

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Separating table data by year
Here's what I put together using random temperatures between 30 and 100 over the period of interest. Since the temperatures are...

más de 2 años hace | 0

Pregunta

R2022a problem: Line number missing in error message sent to Command Window.
With R2022a, line numbers are sometimes omitted in error messages. Here's an example using a trivial script: If I run the sa...

más de 2 años hace | 1 respuesta | 6

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Respondida
I have 2 columns in a matrix. 1st column has the dates. 2nd column has the values. How do I grab all values from 2nd column associated with its date from the 1st column??
Something like this will work: % test data d = { '4/1/18', 6; '4/2/18', 22; '4/2/18', 4; '4/3/18', 2; '4/3...

más de 2 años hace | 1

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Set to zero values in matrix in between two lines
You can vectorize the inner loop: % values of the matrix = 0 in between the two lines for ii=1:width A(floor(s1*ii+b1):fl...

más de 2 años hace | 0

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What is the code to count the number of word in the text file?
There are a few ways to set this up. Here's one using line-by-line processing and a loose definition of a word as a space-delim...

más de 2 años hace | 0

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how to plot surface graph in matlab?
The surf function is probably what you want: (Note that csvread is "not recommended".) x = 350:390; y = linspace(0.001, 0.03...

más de 2 años hace | 1

Respondida
Repeated measures ANOVA with 2 variables with different levels
Change rm = fitrm(dv, 'uniR - texB ~ 1 ', 'WithinDesign', withinDesign); to rm = fitrm(dv, 'uniR-texB ~ 1 ', 'WithinDesign', ...

más de 2 años hace | 0

Respondida
Dot indexing is not supported for variables of this type
Change xApp = av_train; data=xApp (: , 1); type = 1; feature=featureExtraction(data,'mean',type); to xApp = av_train; dat...

más de 2 años hace | 0

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Histogram function plots different colours from those requested
The histogram function uses a face alpha of 0.6 by default. That's why the colors appear a bit lighter than the values from your...

más de 2 años hace | 1

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How to label each line in the plot
The main problem in the image is that the values are superimposed. This can be fixed by using an index into the Values array fo...

más de 2 años hace | 0

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Finding minimum output value for same inputs in a table
Is your table consistently organized as in the image; i.e., 36 rows repeating with the same values execpt for the last column (f...

más de 2 años hace | 0

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draw oriented rectangle around a blob
Something like this seems to work: img = imread('testimage.jpg'); bw = imbinarize(im2gray(img),'adaptive','Sensitivity',0.45);...

más de 2 años hace | 0

Respondida
How do I filter a signal, using FIR filters.
You could perhaps use a butterworth bandpass filter: (Note: Requires Signal Processing Toolbox) t = 0:1/8000:1023/8000; w = 0...

más de 2 años hace | 1

Respondida
Duration of generated sound not correct
Change sound(y); to sound(y,Fsam); The sound function assumes a sampling rate of 8192 Hz. If a different sampling rate is u...

más de 2 años hace | 0

Respondida
How do i plot an audio file with an interval in ms?
Using the sample frequency of the audio data (Fs), this code will extract and plot the first 20 ms: [x, Fs] = audioread('AudioS...

más de 2 años hace | 0

Respondida
Designing a Butterworth Filter
Here's a solution, but it requires MATLAB's Signal Processing Toolbox. Given, sRate, the sample rate of your data, fc, the de...

más de 2 años hace | 1

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Find files of a certain extension and populate a structure field with those file names.
Your second command is wrong. The dir command returns a structure. You don't need to append ".file_names". The filenames are ...

más de 2 años hace | 0