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Udit Gupta


Last seen: casi 4 años hace |  Con actividad desde 2014

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Professional Interests: Signal Processing, Eclectro-acoustics, Machine Learning, Music Information Retrieval

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Pregunta


'subsindex' error when setting figure position. What is going on?
I am trying to resize a figure as shown H = figure; set(H,'Position',[200 200 800 200]) I get the error Function...

alrededor de 8 años hace | 1 respuesta | 1

1

respuesta

Pregunta


Why is there a permission error when repeat writing to excel file?
I am writing results of multiple analyses to different sheets of the same excel file using "writetable" command. The first inst...

alrededor de 8 años hace | 11 respuestas | 6

11

respuestas

Respondida
Text in a figure: Increasing Font Size
You can either include the option 'manual' in your *clabel* call and use your mouse to place the labels; or you can use the 'Lab...

más de 8 años hace | 0

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Respondida
Help with data extraction script
Try using the *readtable* function. This imports tabular data into matlab. Alternatively you can use the "Import Data" button...

casi 9 años hace | 0

Respondida
How to design a bandpass filter
The easiest way is to use the Filter Design and Analysis Tool. Just type |fdatool| in matlab command window. This needs Signal P...

casi 9 años hace | 0

Respondida
Merging two tables based on time interval
You can use t = interp1(sample_time,tableB.Time,'nearest'); if abs(sample_time-t <= 40/(24*60)) <Update medicat...

casi 9 años hace | 0

Respondida
how to calculate the probability under a pdf curve and divide it into different sections (areas)?
Assuming you have the curves as a matlab vector, you can use the *trapz* function to find area under it. See http://www.mathw...

alrededor de 9 años hace | 1

Respondida
weighted average w/ matlab
You can do something like - weight=normpdf(range,centerPoint,spread); wAvg = sum(Y(range).*weight)/sum(weight); In you...

alrededor de 9 años hace | 1

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Pregunta


Is there a way to convert function handles to nan equivalent function handles?
I am passing a cell array of function handles to my function. Typically a user might pass something like- {@sum,@median,@mea...

alrededor de 9 años hace | 1 respuesta | 0

1

respuesta

Respondida
How to find t test of two independent samples in MatLab?
Use the function *ttest2* from matlab statistics toolbox. (http://www.mathworks.com/help/stats/ttest2.html)

más de 9 años hace | 2

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Respondida
Anyone know the error checking for special characters
You can use regular expressions. The code will go something like this - if any(regexp(str,'[^_a-zA-Z0-9]+')) <error c...

más de 9 años hace | 0

Respondida
Save PDF for Latex problems in resolution
I do the following operations before saving my figures for latex set(gcf,'Units','Inches'); pos = get(gcf,'Position'); s...

más de 9 años hace | 0

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Respondida
sprintf with leading minus sign
use sprintf('%6.2f',abs(x))

más de 9 años hace | 0

Respondida
How to do a t-test with repeated measurements from 3 different devices?
You can do it in three steps. H1=ttest(X(1:30),12); H2=ttest(X(31,60),12); H3=ttest(X(61,100),12); If you wa...

más de 9 años hace | 0

Pregunta


How to make the legend selective?
I have a bunch of algorithms I am testing for statistical significance. I wrote a script to generate and save plots which I can ...

más de 9 años hace | 2 respuestas | 0

2

respuestas

Pregunta


Wrong color showed by "imagesc" function, what am I doing wrong?
Hi I have a 3x3 matrix of p-values and I want to display it using a colored grid. I am using the "imagesc" function with a "Copp...

más de 9 años hace | 1 respuesta | 0

1

respuesta

Respondida
Prediction based on previous historical data
You can use mtlabs Curve Fitting tool (cftool). If you don't have that search for any linear regression or linear interpolation ...

casi 10 años hace | 0

Respondida
Batch process text files
You can use - fileName = [input_directory filelabels(i).name]; That should solve the issue.

casi 10 años hace | 0

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Respondida
how to generate random points in a line
For each line (edge) of the polyhedron you can write it's equation as (y - y1) = (y1 - y2)(x - x1)/(x1 - x2) So in case...

casi 10 años hace | 0

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Pregunta


How to check if a figure is closed using the big red 'X' mark?
Hi! I am using a gui in my application. There are 'Ok' and 'Cancel' buttons there which upon clicking close the figure and do so...

casi 10 años hace | 1 respuesta | 2

1

respuesta

Pregunta


Is there a tool/method to determine the versions of Matlab my code is compatible with.
Hi! I sometimes have to distribute Matlab code to my students. I work with a university site license, so I usually have the late...

más de 10 años hace | 1 respuesta | 0

1

respuesta

Respondida
creating a data array from a matrix
This is simple if you use matlab lower triangle functions. See the example code below please. A = magic(39) % Your Martix ...

más de 10 años hace | 2

Respondida
Cell contents assignment to a non-cell array object.
Instead of x=input('Dame el valor x0 inicial'); x{1}=x; use temp=input('Dame el valor x0 inicial'); x{1}=temp;

más de 10 años hace | 0

Respondida
Replacing the column of array elements with NaN.
This should do the trick - |index1 = A(:,1)<x(1,1) | A(:,1)>x(1,2);| |index2 = A(:,1)<x(2,1) | A(:,1)>x(2,2);| |A(index...

más de 10 años hace | 0

Respondida
where did tstool go?
This is from the documentation "tstool will be removed in a future release. To create a time series object, use timeseries...

más de 10 años hace | 0

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Respondida
Extend a vector by extending its elements
If your vector is X. reshape(repmat(X,d,1),1,[]) should do the trick. Example - >> X = [1 2 3 4]; >> d=4; ...

más de 10 años hace | 1

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Respondida
arg(Z) is the function returns argument of the complex number Z. but it is showing error while executing arg(1+i) as" Undefined function 'arg' for input arguments of type 'double' ". Can anyone help me?.do u need to convert double to complex?. put u
No such function as arg. Use angle(1+i)

más de 10 años hace | 0

Respondida
How to ensure a constant amplitude for a sin wave plot ?
I think if you increase the time resolution, that should solve your problem.

más de 10 años hace | 0

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Respondida
How to print the first 100 primes including 1 as a vector
To print prime numbers less than 100 use primeNums = [1 primes(100)] See - http://www.mathworks.com/help/matlab/ref/pr...

más de 10 años hace | 0

Respondida
How to avoid inf
Log of zero is -Inf. To avoid that add a small number before taking the log. For example - D = log(normcdf() - normcdf() ...

más de 10 años hace | 0

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